专利摘要:
Hygienic tissue products using fibrous structures that exhibit a novel combination of slip stick coefficient (slip adhesion) and compression properties, and methods of making such products.
公开号:FR3015214A1
申请号:FR1462753
申请日:2014-12-18
公开日:2015-06-26
发明作者:Ward William Ostendorf；Guillermo Matias Vidal；Jeffrey Glen Sheehan；David Warren Loebker；Ryan Dominic Maladen；John Allen Manifold；Khosrow Parviz Mohammadi
申请人:Procter and Gamble Co；
IPC主号:

专利说明:

[0001] The present invention relates to sanitary paper products comprising fibrous structures having a surface that is both soft, as shown by the slip stick coefficient (friction-slip) of friction-type products, and soft, as shown by the compressibility of sanitary tissue products, as well as methods of manufacturing such products. The soft, mellow surface is a feature that consumers look for in their bathroom tissue products, particularly in their toilet paper products. However, there is a dichotomy between the soft and mellow aspects of the surface. In general, when the softness of the surface of a sanitary tissue product, such as a toilet paper product, is improved, the softness of the sanitary tissue product decreases and vice versa. The slip stick coefficient is a technical measure of surface smoothness, which is measured by the slip stick coefficient test method. The compressibility of the sanitary tissue product is a technical measure of softness, which is measured by the method of compressibility testing of the pile and elastic swelling. Current toilet paper products do not meet consumer criteria for softness and softness of the surface, with and without surface softening agents. Accordingly, one of the problems faced by manufacturers of sanitary tissue products is how to improve (ie, reduce) the slip stick coefficient with, and especially without, friction. surface softening agents, and improving (i.e., increasing) the compressibility of toilet tissue products, eg, toilet paper products, to make these toilet tissue products softer and softer in order to better meet the expectations of consumers who are looking for more luxurious, refined and tissue-like bathroom tissue products, because the methods so far used to make a sanitary tissue product softer-have negatively impacting the softness of the sanitary tissue product and vice versa.
[0002] As a result, there is a demand for sanitary tissue products such as toilet paper products having a better coefficient of slip stick properties and better compressibility properties to provide the consumers of toilet tissue products meeting their wishes and expectations for more comfortable and / or more sophisticated toilet tissue products, and processes for making such bathroom tissue products. The present invention meets the need described above by providing sanitary tissue-type products, for example toilet paper products, which are softer and softer than known toilet tissue products such as toilet paper products. as shown by the slip-stick coefficient of the improved friction measured according to the slip-stick coefficient-testing method of the friction and the improved compressibility measured according to the method of testing the compressibility of the pile and of the swelling elastic, as well as methods of manufacturing said sanitary tissue products.
[0003] One solution to the above problem is to fabricate the sanitary tissue products or at least one fibrous structure layer of the sanitary tissue products on patterned molding elements which apply three dimensional (3D) patterns to the sanitary tissue products and and / or the test-fabricated layers, wherein the patterned molding elements are designed such that the toilet tissue products, such as toilet paper products, made using the patterned molding elements. , are softer and softer than known toilet tissue products, as exemplified by sanitary tissue products, such as toilet paper products, with or without surface softening agents, having slip stick coefficients (adhesion-slip) of the lower friction [ie, less than 740 and / or less than 725 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 275 (Coefficient of friction * 10000)] to slip-stick coefficients (friction-slip) of friction of products of the toilet paper type known, such as toilet paper products, measured according to the slip stick coefficient test method (adhesion-slip) of the friction and the higher compressibilities (ie, greater than 19 and / or greater than 36 and / or greater than 46 mils / (log (g / po 2))) to the compressibilities of known toilet tissue products, such as toilet paper products, measured according to the method of compressibility test of the stack and of elastic inflating. Non-limiting examples of such patterned molding elements include patterned felts, patterned forming webs, patterned rolls, patterned fabrics, and patterned belts used in conventional wet press papermaking processes. in dry or wet processes, which produce a three-dimensional patterned toilet paper or three-dimensional patterned fiber structure layers used in sanitary tissue products. Other non-limiting examples of such patterned molding elements include air-circulating drying fabrics and air-flow drying belts used in paper-making processes by circulating air drying, which produce air-circulation-dried toilet tissue products, for example, three-dimensional air-circulation-dried toilet tissue products, and / or air-circulation-dried fiber structure layers, for example three-dimensional pattern air-dried fiber structure layers used in sanitary tissue products. Non-limiting examples of such patterned molding elements include patterned felts, patterned forming webs, patterned rolls, patterned fabrics and patterned belts used in conventional papermaking processes. wet, in processes, dry or in wet processes, which produce a three-dimensional patterned toilet paper or three-dimensional patterned fiber structure layers used in sanitary tissue products. Other non-limiting examples of such patterned molding elements include air-circulating drying fabrics and air-flow drying belts used in paper-making processes by circulating air drying, which produce air-circulation-dried toilet tissue products, for example, three-dimensional pattern air-dried bathroom tissue products, and / or air-circulation dried fiber structure layers, for example, three-dimensional pattern air-dried fiber structure layers used in sanitary tissue products. In addition to the impact of the patterned molding elements, the fibers used to make the sanitary tissue products of the present invention may also affect the slip stick coefficient of friction of the sanitary tissue products. Against all odds, it turns out that the use of fibers that are not wood pulp, for example trichomes, has a positive impact on the soft surface appearance of the sanitary tissue products, especially when they form at least a portion of an outer surface of the sanitary tissue products, as evidenced by the decrease of the slip stick coefficient (friction adhesion) with respect to sanitary tissue products containing only wood pulp fibers, without having a negative impact on the compressibility of hygienic paper products. Thus, an object of the present invention is a sanitary tissue product which comprises a plurality of pulp fibers, wherein the sanitary tissue product has a slip stick coefficient of less than 625. (Coefficient of friction * 10000) as measured: according to the slip stick test method (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / po 2)) as measured, according to the method of battery compressibility test. In addition, the paper pulp fibers of the sanitary tissue product of the present invention may comprise wood pulp fibers. In addition, the paper pulp fibers of the sanitary tissue product of the present invention may comprise fibers that are not wood pulp. In addition, the sanitary tissue product of the present invention may comprise an embossed fibrous structure layer. In addition, the sanitary tissue product of the present invention may comprise a three dimensional patterned fibrous structure layer. In addition, the three-dimensional patterned fibrous structure layer of the sanitary tissue product of the present invention may comprise a fibrous structure layer dried by air circulation. In addition, the air-flow-dried fibrous structure layer of the sanitary tissue product of the present invention may be a layer of fibrous structure dried by creped air circulation. In addition, the air-circulated fibrous structure layer of the sanitary tissue product of the present invention may be an uncreped air-dried fibrous structure layer.
[0004] In addition, the three-dimensional patterned fibrous structure layer of the sanitary tissue product of the present invention may comprise a tissue-crimped fibrous structure layer. In addition, the three-dimensional, patterned fibrous structure layer of the sanitary tissue product of the present invention may comprise a belt-crimped fibrous structure layer. In addition, the sanitary tissue product of the present invention may comprise a conventional fibrous structure layer in a wet press. In addition, the sanitary tissue product of the present invention may comprise a fibrous structure layer not impregnated with lotion. In one example of the present invention, a sanitary tissue product comprising a plurality of paper pulp fibers, the sanitary tissue product having a slip stick coefficient (friction slip) of less than 625 and / or less than 620 (Coefficient of Friction * 10000) measured according to the slip stick coefficient (friction slip) test method and compressibility greater than 36 mils / (log (g / po 2)) measured according to the compressibility test method of the pile and elastic inflating, is presented. In another example of the present invention, a sanitary tissue product comprising at least one three dimensional patterned fibrous structure layer comprising a plurality of pulp fibers, the sanitary tissue product having a slip stick coefficient (adhesion). friction) less than 625 and / or less than 620 (Coefficient of friction * 10000) measured according to the Slip stick coefficient of friction method and a compressibility greater than 36 mils / (log (g) g / cm 2)) measured according to the method of compressibility test of the stack and elastic swelling, is presented. In another example of the present invention, an air-circulation-dried toilet tissue product, such as a three-dimensional pattern air-dried toilet tissue product, for example a toilet paper product, comprising a plurality of paper pulp fibers, the air-circulation-dried hygienic typecap product having a slip stick coefficient of less than 625 and / or less than 620 (Coefficient of friction * 10000) measured according to the slip stick coefficient of friction test method and a compressibility greater than 36 mils / (log (g / in)) measured according to the method of compressibility test of the pile and elastic inflator, is presented . In yet another example of the present invention, a sanitary tissue product, for example a toilet paper product, comprising at least one air-dried fibrous structure layer comprising a plurality of pulp fibers, the hygienic paper product having a slip stick coefficient of friction of less than 625 and / or less than 620 (coefficient of friction * 10000) measured according to the method of testing slip coefficient (adhesion-slip) of friction and a compressibility greater than 36 mils / (log (g / po 2)) measured according to the method of compressibility test of the stack and elastic swelling, is presented. In yet another example of the present invention, a sanitary tissue product, for example a toilet paper product, comprising at least one three dimensional pattern air-dried fibrous structure layer comprising a plurality of fibrous tissue fibers. paper, the sanitary tissue product having a slip stick coefficient of friction of less than 625 and / or less than 620 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip ) of friction and compressibility greater than 36 mils / (log (g / in2)) measured by the method of compressibility test of the stack and elastic swelling, is presented. In yet another example of the present invention, a multilayer, eg double layer, sanitary tissue product, such as a toilet paper product, comprising a plurality of paper pulp fibers, the multilayer toilet tissue product having a slip stick coefficient of friction of less than 625 and / or less than 620 (Coefficient of friction * 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / po 2)) measured according to the method of compressibility test of the stack and elastic inflator, is presented. In still another example of the present invention, a multilayer, eg double layer, sanitary tissue product, such as a toilet paper product, comprising at least one layer of fibrous structure with three dimensional patterns, such as a layer of a three-dimensional pattern air-dried fiber structure comprising a plurality of pulp fibers, the multilayer sanitary tissue product having a slip stick coefficient of less than 625 and / or less than 620 (Coefficient of friction * 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 036 mils / (log (g / in)) measured according to the compressibility test method of the stack and elastic inflating, is presented. In another example of the present invention, a creped tissue product comprising a plurality of pulp fibers, the creped tissue product having a slip stick coefficient of less than 740 (Coefficient friction coefficient * 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / po2)) measured according to the method of compressibility test of the pile and of elastic inflating, is presented. In another example of the present invention, a creped toilet paper product comprising at least one layer of creped fibrous structure with three dimensional patterns comprising a plurality of paper pulp fibers, the creped toilet paper product having a slip coefficient. stick (adhesion-slip) of friction lower than 740 (Coefficient of friction * 10000) measured according to the slip stick coefficient test method (grip-slip) of friction and compressibility greater than 36 mils / (log (g / in2) ) measured according to the method of compressibility test of the stack and elastic inflator, is presented. In another example of the present invention, an air-circulated creped tissue product such as a three-dimensional pattern air-dried creped tissue product, for example a toilet paper product. comprising a plurality of paper pulp fibers, the creped tissue product dried by air circulation having a slip stick coefficient (friction slip) of less than 740 (Coefficient of friction * 10000) measured according to the method Slip-stick coefficient test test (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / in2)) measured according to the method of compressibility test of the stack and elastic swelling, is presented.
[0005] In another example of the present invention, a creped toilet tissue product, such as a toilet paper product, comprising at least one creped fibrous structure layer dried by air circulation comprising a plurality of pulp fibers , the creped tissue product having a slip stick coefficient of less than 740 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip) of friction and compressibility greater than 36 mils / (log (g / po 2)) measured according to the method of compressibility test of the pile and elastic swelling, is presented. In another example of the present invention, a creped toilet tissue product, for example a toilet paper product, comprising at least one three dimensional pattern air-dried creped fibrous structure layer comprising a plurality of dough fibers paper, the creped tissue product having a slip stick coefficient of less than 740 (Coefficient of friction * 10000) measured according to the slip stick coefficient test method (adhesion-slip); a compressibility greater than 19 mils / (log (g / po 2)) measured according to the method of compressibility test of the pile and elastic inflator, is presented.
[0006] In yet another example of the present invention, a creped, eg double layer, multi-ply sanitary tissue product, such as a toilet paper product, comprising a plurality of pulp fibers, the multilayer sanitary tissue product. creped having a slip stick coefficient (friction slip) of less than 740 (coefficient of friction * 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / po 2)) measured according to the method of compressibility test of the stack and elastic inflator, is presented. In still another example of the present invention, a creped multilayer, eg double layer, sanitary tissue product, such as a toilet paper product, comprising at least one layer of creped fibrous structure with three dimensional patterns, such as three-dimensional pattern creped air-dried fibrous structure layer comprising a plurality of paper pulp fibers, the creped multilayer sanitary tissue product having a slip stick coefficient of less than 740 (Coefficient friction coefficient * 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 36 mils / (log (g / po 2)) measured according to the method of compressibility test of the pile and of elastic inflating, is presented.
[0007] In one example of the present invention, a sanitary tissue product comprising a plurality of pulp fibers, the sanitary tissue product having a slip stick coefficient of less than 314 (Coefficient of Friction) 10000) measured according to the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 19 mils / (log (g / in2)) measured according to the method of compressibility test of the pile and elastic inflator , is present. In yet another example of the present invention, a sanitary tissue product comprising a plurality of pulp fibers, the sanitary tissue product having a slip stick coefficient of the friction measured according to the test method. coefficient of slip-slip coefficient and compressibility measured by the method of compressibility test of the pile and elastic swelling so that the sanitary tissue-type product is above a line having The following equation: y = 0.1203x + 12.913 represented as a graph expressing the relationship between slip-stick and compressibility, as shown in Figure 1B, is presented. In yet another example of the present invention, a sanitary tissue product comprising a plurality of pulp fibers, the sanitary tissue product having a slip stick coefficient of the friction measured according to the test method. coefficient of slip-slip coefficient and compressibility measured according to the method of compressibility test of the pile and elastic swelling so that the point of the sanitary tissue product is above the right having the following equation: y = 0.0424x + 24.017 represented as a graph expressing the relationship between slip-stick and compressibility, as shown in Figure 1B, is presented. In yet another example of the present invention, a method of manufacturing a multilayer or single layered tissue product of the present invention, the method comprising the steps of: a. contacting a patterned molding member with a fibrous structure comprising a plurality of paper pulp fibers to form a three dimensional patterned fibrous structure layer; .0 b. manufacturing a multi-layer or single-layer sanitary tissue product according to the present invention comprising the three-dimensional patterned fiber structure layer is presented. Accordingly, the present invention provides hygienic paper products, such as toilet paper products, which are softer and more comfortable than known toilet tissue products, for example toilet paper products, as well as of manufacture of said products. Fig. 1 is a graph expressing the relationship between the slip stick coefficient (friction coefficient * 10000) and the compressibility (mils / (log (g / po2))) for hygienic paper products. of the present invention and commercially available sanitary paper products, both multi-layer and single-layer sanitary tissue products, illustrating the low slip-stick coefficient of friction in combination with the high level of compressibility presented. Examples of toilet paper products, eg toilet paper products, of the present invention. FIG. 2A is a schematic representation of another example of a molding element according to the present invention; Figure 2B is another schematic representation of a portion of the molding member of Figure 2A; Figure 3 is a MikroCAD image of a sanitary tissue product manufactured using the molding element of Figure 2A; Figure 4A is a schematic representation of another example of a molding element according to the present invention. Figure 4B is another schematic representation of a portion of the molding element of Figure 4A. cross-sectional view of Figure 4B taken along line 4C-4C; Figure 5A is a schematic representation of a sanitary tissue product manufactured using the molding element of Figure 4A; Figure 5B is a cross-sectional view of Figure 5A taken along line 5B-5B; Figure 6A is a schematic representation of another example of a molding element according to the present invention; Figure 6B is another schematic representation of a portion of the molding member of Figure 6A; Figure 6C is a cross-sectional view of Figure 6B taken along line 6C-6C; Figure 7A is a MikroCAD image of a sanitary tissue product manufactured using the molding element of Figure 6A; Figure 7B is an enlarged view of the MikroCAD image of Figure 7A; Fig. 8 is a schematic representation of an example of a paper flow drying process for making a sanitary tissue product according to the present invention; Fig. 9 is a schematic representation of an example of a process for manufacturing creped paper by air circulation drying to manufacture a sanitary tissue product according to the present invention; Fig. 10 is a schematic representation of an example of a tissue creped tissue manufacturing method for making a sanitary tissue product according to the present invention; Figure 11 is a schematic representation of another example of a tissue creped tissue manufacturing method for making a sanitary tissue product according to the present invention; Fig. 12 is a schematic representation of an example of a belt creped paper manufacturing method for making a sanitary tissue product according to the present invention; Fig. 13 is a schematic top view of a slip stick coefficient (slip-slip) test method configuration; Fig. 14 is an image of a friction plate for use in the slip stick coefficient (friction slip) test method; and Fig. 15 is a schematic representation of the side of a slip stick coefficient (slip-slip) test method configuration.
[0008] Definitions "Toilet Tissue Product" as used herein means a soft article of low density (i.e., <about 0.15 g / cm3) comprising one or more layers of fibrous structure according to the present invention, the sanitary tissue product being useful as a wiping instrument for cleaning after urination and after defecation (toilet paper), for otorhinolaryngological discharge (tissue), and versatile uses of absorption and cleaning (absorbent towels). The sanitary tissue product may be wound on itself around a mandrel or without a mandrel to form a roll of sanitary tissue product.
[0009] The sanitary tissue products and / or fibrous structures of the present invention may have a basis weight ranging from greater than 15 g / m 2 to about 120 g / m 2 and / or from about 15 g / m 2 to about 110 g / m 2 and / or from about 20 g / m 2 to about 100 g / m 2 and / or from about 30 to about 90 g / m 2. In addition, the sanitary tissue products and / or fibrous structures of the present invention may have a basis weight of from about 40 g / m 2 to about 120 g / m 2 and / or from about 50 g / m 2 to about 110 g / m 2. g / m 2 and / or from about 55 g / m 2 to about 105 g / m 2 and / or from about 60 to about 100 g / m 2. The sanitary tissue products of the present invention can have a dry tensile strength in the machine direction and the cross direction greater than about 59 g / cm (150 g / in) and / or about 78 g / cm at about 394 g / cm and / or about 98 g / cm to about 335 g / cm. In addition, the sanitary tissue product of the present invention can have a dry tensile strength in the machine direction and the cross direction greater than about 196 g / cm and / or about 196 g / cm 2. about 394 g / cm and / or from about 216 g / cm to about 335 g / cm and / or from about 236 g / cm to about 315 g / cm. In one example, the sanitary tissue product has a dry tensile strength in the machine direction and the cross direction less than about 394 g / cm and / or less than about 335 g / cm. In another example, the sanitary tissue products of the present invention can have a machine direction dry tensile strength and the cross direction greater than about 196 g / cm and / or greater than about 236 g / cm 2. cm and / or greater than about 276 g / cm and / or greater than about 315 g / cm and / or greater than about 354 g / cm and / or greater than about 394 g / cm and / or about 315 g / cm and / or cm to about 1968 g / cm and / or from about 354 g / cm to about 1181 g / cm and / or from about 354 g / cm to about 984 g / cm and / or about 394 g / cm to about 787 g / cm. The sanitary tissue products of the present invention can have an initial wet tensile strength in the machine direction and the cross direction less than about 78 g / cm and / or less than about 59 g / cm and / or lower. at about 39 g / cm and / or less than about 29 g / cm. The hygienic tissue-like products of the present invention may have an initial amount of wet tensile strength in the machine direction and the cross direction greater than about 118 g / cm and / or greater than about 157 g / cm and / or greater. at about 196 g / cm and / or greater than about 236 g / cm and / or greater than about 276 g / cm and / or greater than about 315 g / cm and / or greater than about 354 g / cm and / or greater at about 394 g / cm and / or about 118 g / cm to about 1968 g / cm and / or about 157 g / cm to about 1181 g / cm and / or about 196 g / cm to about 984 g / cm and / or from about 196 g / cm to about 787 g / cm and / or from about 196 g / cm to about 591 g / cm.
[0010] The sanitary tissue products of the present invention may have a density (at a thickness measured at 95 g / in 2 (14.725 g / cm 2)) of less than about 0.60 g / cm 3 and / or less than about 0.30 g / cm 3 g / cm 3 and / or less than about 0.20 g / cm 3 and / or less than about 0.10 g / cm 3 and / or less than about 0.07 g / cm 3 and / or less than about 0.05 g / cm 3 / cm3 and / or from about 0.01 g / cm3 to about 0.20 g / cm3 and / or from about 0.02 g / cm3 to about 0.10 g / cm3. The sanitary tissue products of the present invention may be in the form of sanitary tissue type products. Such rolls of sanitary tissue product may comprise a plurality of interconnected, but perforated, sheets of fibrous structure, which are distributable separately from adjacent sheets. In another example, the sanitary tissue products may be in the form of discrete sheets that are stacked within and dispensed from a container, such as a can. The fibrous structures and / or sanitary tissue products of the present invention comprise additives such as surface softening agents, for example silicones, quaternary ammonium compounds, aminosilicones, lotions and mixtures thereof. products, temporary moisture-resistant agents, permanent moisture-resistant agents, bulk softening agents, wetting agents, latexes, especially surface-applied latexes, dry strength such as carboxymethylcellulose and starch, and other types of additives suitable for inclusion in and / or hygienic paper products. "Fibrous structure" as used herein means a structure that includes a plurality of pulp fibers. In one example, the fibrous structure may comprise a plurality of wood pulp fibers. In another example, the fibrous structure may comprise a plurality of non-wood pulp fibers, for example, vegetable fibers, staple synthetic fibers, and mixtures thereof. In yet another example, in addition to the pulp fibers, the fibrous structure may comprise a plurality of filaments, such as polymeric filaments, for example thermoplastic filaments such as polyolefin filaments (i.e. polypropylene filaments) and / or hydroxyl polymeric filaments, for example polyvinyl alcohol filaments and / or polysaccharide filaments such as starch filaments. In one example, a fibrous structure according to the present invention refers to an ordered arrangement of fibers alone and with filaments within a structure to perform a function. Non-limiting examples of fibrous structures of the present invention include paper. Non-limiting examples of methods for manufacturing fibrous structures include known methods of making wet paper, such as conventional wet press papermaking processes, papermaking processes by air circulation drying, and dry paper manufacturing processes. Such methods typically include the steps of preparing a fiber composition in the form of a suspension in a medium, or wet, more specifically an aqueous medium, or dry, more specifically gaseous, i.e. with air as a medium. The aqueous medium used for wet processes is often referred to as a fiber slurry. The fibrous slurry is then used to deposit a plurality of fibers on a web, fabric or forming belt such that an embryonic fibrous structure is formed, after which drying and / or bonding of the fibers together provide a structure fibrous. Subsequent processing of the fibrous structure may be effected such that a finished fibrous structure is formed. For example, in typical papermaking processes, the finished fibrous structure is the fibrous structure that is wound on the reel at the end of papermaking, often called the parent reel, and may later be converted to a finished product. for example a single layer or multilayer sanitary tissue product. The fibrous structures of the present invention may be homogeneous or may be in layers. If layered, the fibrous structures may comprise at least two and / or at least three and / or at least four and / or at least five layers of fibers and / or filament compositions. In one example, the fibrous structure of the present invention consists essentially of fibers, for example pulp fibers, such as cellulosic pulp fibers and more particularly wood pulp fibers. In another example, the fibrous structure of the present invention comprises fibers and is devoid of filaments. In yet another example, the fibrous structures of the present invention comprise filaments and fibers, such as a co-formed fibrous structure. "Coformed fibrous structure" as used herein means that the fibrous structure comprises a mixture of at least two different materials in which at least one of the materials comprises a filament, such as a polypropylene filament, and at least one other material, different from the first material, comprises a solid additive, such as fiber and / or particulate material. In one example, a coformed fibrous structure comprises solid additives, such as fibers, such as wood pulp fibers, and filaments, such as polypropylene filaments. "Fiber" and / or "filament" as used herein refers to an elongated particulate material having an apparent length substantially exceeding its apparent width, i.e., a length to diameter ratio of at least about 10. In one example, a "fiber" is an elongate particulate material as previously described having a length of less than 5.08 cm (2 inches) and a "filament" is an elongated particulate material as described above which has a length greater than or equal to 5.08 cm (2 inches). Fibers are typically considered discontinuous by nature. Non-limiting examples of fibers include pulp fibers, such as wood pulp fibers, and discontinuous synthetic fibers such as polyester fibers.
[0011] Filaments are typically considered continuous or essentially continuous in nature. The filaments are relatively longer than the fibers. Non-limiting examples of filaments include meltblown filaments and / or spunbonded filaments. Non-limiting examples of filamentable materials include natural polymers, such as starch, starch derivatives, cellulose and cellulose derivatives, hemicellulose, hemicellulose derivatives, and polymers. including, but not limited to, polyvinyl alcohol filaments and / or polyvinyl alcohol derivative filaments, and thermoplastic polymer filaments, such as polyesters, nylons, polyolefins such as polyester filaments, polypropylene, polyethylene filaments, and biodegradable or compostable thermoplastic fibers such as polylactic acid filaments, polyhydroxyalkanoate filaments and polycaprolactone filaments. The filaments may be monocomponent or multicomponent, such as bicomponent filaments. In one example of the present invention, "fiber" refers to fibers for papermaking. Paper fibers useful in the present invention include cellulosic fibers, generally referred to as wood pulp fibers. Applicable wood pulp includes chemical pulps, such as Kraft, sulphite and sulphate pulps, as well as mechanical pulps, including, for example, pulpwood pulp, thermomechanical pulp and chemically thermomechanical pulp. changed. Chemical pulps, however, may be preferred because they impart a greater tactile feel than the absorbent paper sheets made therefrom. Pulps derived from both deciduous trees (hereinafter also referred to as "hardwoods") and coniferous trees (hereinafter also referred to as "coniferous woods") may be used. The hardwood and coniferous wood fibers may be mixed, or alternatively may be layered to provide a laminated fibrous structure. U.S. Patent No. 4,300,981 and U.S. Patent No. 3,994,771 describe the layered superimposition of hardwood and coniferous wood fibers. Also applicable to the present invention are fibers derived from recycled paper, which may contain any or all of the foregoing, as well as other non-fibrous materials such as fillers and adhesives used to facilitate papermaking. original. In one example, the wood pulp fibers are selected from the group consisting of hardwood pulp fibers, coniferous wood fibers and mixtures thereof. The hardwood pulp fibers may be selected from the group consisting of: tropical hardwood pulp fibers, northern hardwood pulp fibers and mixtures thereof. The tropical hardwood pulp fibers may be selected from the group consisting of: eucalyptus fibers, acacia fibers and mixtures thereof. The northern hardwood pulp fibers may be selected from the group consisting of: cedar fibers, maple fibers and mixtures thereof. In addition to the various wood pulp fibers, other cellulosic fibers such as cotton linters, rayon, lyocell, trichomes, duvets, and bagasse may be used in the present invention. Other sources of cellulose in the form of fiber or which can be spun into fiber include herbs and cereal sources.
[0012] A "trichome" or "trichome fiber" as used herein refers to an epidermal attachment of a variable form, structure and / or function of a non-seed part of a plant. In one example, a trichome is an excrescence of the epidermis of a non-seed part of a plant. The outgrowth can extend from an epidermal cell. In one embodiment, the outgrowth is a trichome fiber. The outgrowth may be a growth of hair type or silk type from the epidermis of a plant. Trichome fibers are different from down fibers in that they are not attached to seed parts of a plant. For example, trichome fibers, unlike down fibers, are not attached to the epidermis of a seed or pod. Cotton, kapok, bunchweed and coconut fiber are non-limiting examples of down fibers. In addition, the trichome fibers are different from the free-wood and / or wood-free core fibers in that they are not attached to the liber parts, also known as phloem, or core, also known as name of lignin parts of a stem of a woodless dicotyledonous plant. Non-limiting examples of plants that have been used to provide woodfree release fibers and / or woodfree core fibers include amber, jute, flax, ramie and hemp. In addition, trichome fibers are different from fibers derived from monocotyledonous plants such as those derived from cereal straws (wheat, rye, barley, oats, etc.), stalks (maize, cotton, sorghum, Hesperaloe funifera, etc.). ), rushes (bamboo, bagasse, etc.), herbs (alfa, lemon, sabai, switchgrass, etc.), since such fibers derived from monocotyledonous plants are not attached to an epidermis. a plant.
[0013] In addition, the trichome fibers are different from the leaf fibers in that they do not come from within the structure of the sheet. Sisal and abaca are sometimes released as leaf fibers. Finally, trichome fibers are different from wood pulp fibers since wood pulp fibers are not growths of a plant's epidermis; namely a tree. The wood pulp fibers come rather from the secondary lignin portion of the tree stem. "Weight per unit area" as used herein is the weight per unit area of a sample indicated in lbs / 3000 pie or g / m2 and is measured according to the surface mass test method described herein. The "machine direction" or "SM" as used herein refers to the direction parallel to the flow of the fibrous structure through the fibrous structure manufacturing machine and / or the manufacturing equipment of the fibrous structure product. type toilet paper. The "cross machine direction" or "ST" as used herein refers to the direction parallel to the width of the fibrous structure manufacturing machine and / or the sanitary tissue product manufacturing equipment and perpendicular to the machine direction. "Layer" as used herein means an individual fibrous structure, in one piece. "Layers" as used herein means two or more individual, single-piece fibrous structures arranged in a face-to-face relationship substantially contiguous to one another, forming a multilayer fibrous structure and / or a product multilayer sanitary paper type. It is also contemplated that an individual, integral fibrous structure can effectively form a multilayered fibrous structure, for example by being folded on itself. Embossed as used herein with respect to a fibrous structure and / or a sanitary tissue product means that a fibrous structure and / or a sanitary tissue product have been subjected to a process which converts a fibrous structure and / or sanitary surface-like tissue product in a decorative surface by replicating a pattern on one or more embossing rollers, which form a line of contact through which the fibrous structure and / or the sanitary tissue product pass. Embossed paper does not include creping, micro-creping, printing or other processes that can impart texture and / or decorative pattern to a fibrous structure and / or a sanitary tissue product. "Differential density" as used herein means a fibrous structure and / or a sanitary tissue product which comprises one or more relatively low fiber density regions, which are referred to as pad regions, and one or more regions of relatively high fiber density, which are designated as join regions. "Densified" as used herein refers to a portion of a fibrous structure and / or sanitary tissue product characterized by regions of relatively high fiber density (joint regions). "Non-densified" as used herein means a portion of a fibrous structure and / or sanitary tissue product which has a lower density (one or more regions of a relatively higher density of fiber). weak) (pad regions) to that of another part (e.g., a seam region) of a fibrous structure and / or a sanitary tissue product. "Unwound" as used herein with respect to a fibrous structure and / or a sanitary tissue product of the present invention means that the fibrous structure and / or the sanitary tissue product is an individual sheet ( for example, not attached to adjacent sheets by perforation lines, however, two or more individual sheets may be intertwined with each other, i.e. not concentrically wrapped around a mandrel or on them -Same. For example, an unwound product includes a face wipe. "Method of Testing Stuff Compressibility and Elastic Inflator" as used herein refers to the method of testing for compressibility of the stack and elastic swelling described herein. "Slip adhesion coefficient test method" as used herein refers to the slip stick coefficient testing method described herein. "Plate Rigidity Test Method" as used herein refers to the rigidity test method of the plate described herein. "Crepe" as used herein means the creping of a Yankee or other similar roller, the creped fabric and / or the creped belt. Rapid transfer of a fibrous structure alone does not result in a "creped" fibrous structure or "creped" sanitary tissue product for purposes of the present invention. Toilet Tissue Product The sanitary tissue products of the present invention may be single layer or multilayer. In other words, the sanitary tissue products of the present invention may comprise one or more fibrous structures. The fibrous structures and / or sanitary tissue products of the present invention are made from a plurality of pulp fibers, for example wood pulp fibers and / or other pulp fibers. cellulosic, for example trichomes. In addition to paper pulp fibers, the fibrous structures and / or sanitary tissue products of the present invention may comprise synthetic fibers and / or filaments. As illustrated in Figure 1 and in Table 1 below, which contains a portion of the data values shown in Figure 1, the sanitary tissue products of the present invention exhibit a combination of compressibility values as measured according to the method of testing the compressibility of the pile and the elastic swelling agent, the rigidity values of the plate as measured by the rigidity test method of the plate, slip stick coefficient values (grip-slip) of the friction such as measured according to the slip stick coefficient test method (adhesion-slip) of the friction and / or elastic swelling values as measured by the method of testing the compressibility of the pile and the elastic swelling which constitute an innovation with respect to the products toilet tissue type known. Sample No. of Coefficient Stiffness Compressibility Inflating Mass Mass slip stick (adhesion- 10 to 1250 surface elastic surfacic slip layers) friction plate (-m) 5 sheets 3 2 (tert2) (cm / g) (113/3000 feet ) (N * mtn) * 10k Toilet paper 2,672 2,48 35,55 44,39 32,17 52,36 soft and strong Kroger Home Sense Kroger Home Sense lotion impregnated paper handkerchief 3 258 1,38 17,31 36.91 27.25 44.35 Angle Soft® 2 759 1.51 34.47 47.30 25.07 40.80 Handkerchief 1 725 2.27 45.64 72.40 19.20 31.25 Extra Sweet Scott (UCTAD) Scott 1000 1 780 0.84 10.25 41.03 11.37 18.50 Cottonelle® Ultra 2625 5.24 50.30 69.47 28.73 46.716 -A (UCTAD) Quilted Northern® 3,390 1.93 33.58 51.04 - Ultra-soft Quilted Northern® 2 510 3.33 25.68 52.95 30.84 50.19 Ultra Soft and Resistant Kirlcland Extra Soft 2 382 2.76 21.97 58 , 90 28.42 46.25 Hand towels 1 1016 4.36 44.10 56.20 40.63 66.13 Kleenex® (DRC) NEVE Neutral 2 528 1.37 18.66 55.15 19.33 31 , 46 NEVE Supreme e 3 428 2.65 18.72 53.20 28.82 4t, Do Nepia Ultra soft 2 506 1.45 6.81 42.69 22.74 37.01 Tempo Neutral 3 435 3.65 19.08 42, 88 29.74 48.40 Handkerchief 2 303 1.22 12.25 44.97 17.63 28.69 Kleenex® (daily use) Handkerchief 2 298 2.40 12.73 39.12 28.82 46,90 impregnated with Kleenex® lotion Paper handkerchief 3,279 2.05 15.90 44.36 25.87 42.10 Kleenex® Ultra soft Tissue paper 3 257 1.51 15.36 29.79 34.53 56 , 20 Kleenex® Pleasant to the touch Bounty® Extra Soft 2,743 9,19 54,98 65,66 36,32 59,11 Bounty® Basic 1,108 8.39 116.02 95.76 24.71 40.22 Bounty® 2 955 8.50 54.53 91.69 30.95 50.37 Brawny® 2 1092 11.61 47.82 90.10 29.66 48.27 Charmin® Ultra-soft 2 346 3.26 24.51 55 13 31.13 50.66 Charmin® Ultra 2 437 3.97 30.21 76.03 22.98 37.40 resistant Charmin® First quality 2 568 3.74 34.69 79.24 23.81 38.75 Puffs ® 2,395 1.75 19.39 57.90 18.06 29.39 Puffs® Plus 2,281 2.52 18.60 45.40 26.87 43.73 Puffs® Ultra 2 263 2.60 16.78 45 , 29 24.63 40.09 Handkerchief of paper 1 992 2.86 43.28 73.72 19.20 31.25 Extra sweet Scott (UCTAD) Members Mark 2 440 2.96 24.92 70.15 23.31 37.94 Charmin® Ultra - 2.535 - 4,18 35,04 72,30 24,45 39,79 resistant Cottonelle® Ultra 2,690 5,29 47,30 68,66 27,71 45,10 (UCTAD) Cottonelle® Ultra 2,619 47,3 64, 6 27.1 44.11 (UCTAD) Charmin® Ultra 2 437 3.97 30.21 76.03 22.98 37.40 Heavy duty Ultra-soft and 2.366 2.55 28, .8._ 63.3 24, 5 39.87 Economic Charmin® Delicate 2 489 1.98 29.77 60.87 28.84 46.94 Charmin® Basic 1 507 1.42 25.67 56.31 20.03 32.60 Charmin® Basic 1 565 1.26 23.36 58.98 18.89 30.74 Charmin® Basic 1 534 1.58 24.54 58.94 18.67 30.39 Invention 2 670 2.98 50.83 65.86 23.07 37.55 Invention 2 706 3.26 49.22 65.71 23.48 38.21 Invention 2 768 4.65 61.99 75.86 27.36 44.53 Invention 2 389 2.79 47.81 53, 85 33.46 54.46 Invention 2 283 2.36 42.45 62.69 34.89 56.78 Invention 2 340 3.75 33.80 57.00 30.12 49.02 Invention 2 371 2.79 36 ; 66 57.77 31.03 50.50 Invention 2 351 3.00 36.73 59.64 30.54 49.70 Inv 2,302 3.26 44.39 62.61 30.66 49.90 Invention 2 318 2.45 35.95 64.50 31.69 51.58 Invention 2 408 2.22 36.44 63.92 31 , 68 51.56 Invention 2,335 2.10 35.74 62.56 31.42 51.14 Invention 2 264 2.92 27.79 60.88 29.98 48.79 Invention 2 260 3.90 27.62 65.95 29.22 47.56 Invention 2 230 3.04 24.56 64.04 31.14 50.68 Invention 2 256 3.79 27.08 65.30 - - Invention - 2 253 3.24 30, 65 66.06 - - Example 4 Invention 2 269 4.42 29.86 62.05 - - Invention 2 445 2.81 42.65 56.74 30.28 49.28 Invention 2 262 2.62 36.15 58 , 67 32.37 52.68 Invention 2 246 2.60 36.40 54.83 34.45 56.07 Invention 2 392 2.49 40.83 54.95 29.95 48.74 Invention 2 445 2.81 42.65 56.74 30.28 49.28 Invention 2 311 3.31 33.01 55.34 27.69 45.07 Invention 2 333 2.92 34.45 57.58 30.49 49.62 Invention 2 321 2.16 35.00 64.47 29.81 48.52 Invention 2 393 2.38 43.09 57.58 31.08 50.58 Invention 2 287 2.49 36.99 55.72 31.66 51 Invention - 2,732 1,36 43,10 63,80 21,26 34,60 Example 5 Invention - 2,745 1.90 56.30 84.70 20.70 33.69 Example 6 Invention 2 643 2.68 52.30 70.20 26.99 43.93 Invention 2 438 2.82 33.42 67.75 30.30 49.31 Invention 2 511 3.77 55.20 68.05 33 80 55.01 Invention - 2 708 11.51 68.4 100A 31.5 51.27 Example 7 _ Invention 2 675 11.64 66; 8 94.7 33.0 53.71 Table 1 In an example of this In the present invention, the sanitary tissue product of the present invention has a slip stick coefficient of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the process slip-slip coefficient of friction test and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mol / (log (g / po2)) as measured e according to the method of compressibility test of the stack and elastic do-inflating. In another example of the present invention, the sanitary tissue product of the present invention is a three-dimensional patterned toilet paper product comprising at least one three dimensional patterned fibrous structure layer, wherein the sanitary tissue product has a slip stick coefficient of friction less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip-stick coefficient of friction test method and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compre ssibility of the battery and elastic inflator. In another example of the present invention, the sanitary tissue product of the present invention is a circulating air-dried toilet tissue product, such as air-circulation-dried toilet tissue product and three-dimensional patterns, for example, a sanitary tissue product, comprising at least one layer of air-flow-dried fibrous structure, such as a three-dimensional pattern air-dried fibrous structure layer, wherein hygienic paper product has a slip stick coefficient of friction of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the coeff test method icient slip stick (friction-slip) and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility test of the stack and elastic swelling. In another example of the present invention, the sanitary tissue product is a multilayer sanitary tissue product, for example a double layer, for example, a sanitary tissue product having a slip stick coefficient. friction of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (grip-slip) of the friction and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility testing of the stack and elastic swelling. In another example of the present invention, the sanitary tissue product is a multilayer sanitary tissue product, for example a double layer sanitary tissue product, for example a toilet paper product, comprising at least one structural layer. three-dimensional patterned fibrous material, for example a three-dimensional patterned air-dried fibrous structure layer, wherein the sanitary tissue product has a slip stick coefficient of less than 625 and / or lower at 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip-stick coefficient test method (adhesion-slip) and a compressibility greater than 36 and / or higher greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility testing of the stack and elastic swelling. In one example, a sanitary tissue product of the present invention comprises a fibrous structure dried by air circulation. The air-dried fibrous structure may be formed on an air-circulating drying fabric designed such that the air-dried fibrous structure and / or the sanitary tissue product comprising the dried fiber structure by air circulation has a slip stick coefficient of friction less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip) friction and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured according to the compressibility test method of the pile and elastic inflating. In another example, the air-circulated dried fiber structure may be formed on an air-circulating drying belt comprising a resin pattern designed such that the air-circulated dried fiber structure and / or the a sanitary tissue product comprising the air-dried fibrous structure has a slip stick coefficient of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured according to the slip stick coefficient of friction test method and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / po2)) such as measured by the method of compressibility test of the stack and elastic swelling. In one example, a sanitary tissue product of the present invention is a multilayer sanitary tissue product comprising at least one air flow dried fibrous structure comprising a plurality of pulp fibers, wherein Toilet paper has a slip stick coefficient of friction of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 2g0 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip ) friction and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compression test the stack and elastic swelling.
[0014] In another example, a sanitary tissue product of the present invention is a multilayer sanitary papy product comprising at least one creped air circulation dried fiber structure comprising a plurality of paper pulp fibers, wherein multi-shot sanitary tissue product has a slip stick coefficient of friction of less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip) friction and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured according to The method of testing the compressibility of the stack and elastic swelling. In one example of the present invention, the sanitary tissue product of the present invention is a creped tissue product having a slip stick coefficient of less than 740 and / or less than 725 and / or or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less at 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip) of friction and superior compressibility at 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility testing of the cell and of elastic inflating. In another example of the present invention, the sanitary tissue product of the present invention is a three dimensional patterned creped toilet tissue product comprising at least one three dimensional patterned creped fibrous structure layer, wherein the paper type product. hygienic material has a slip stick coefficient of friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less at 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000 ) as measured by the slip stick coefficient test method and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater less than 46 mils / (log (g / po)) as measured by the method of compressibility testing of the pile and elastic swelling. In another example of the present invention, the sanitary tissue product of the present invention is an air-creped and creped tissue product such as air-circulation-dried toilet tissue product. , creped and three-dimensional pattern, for example, a sanitary tissue product, comprising at least one air-dried and creped air-dried fibrous structure layer, such as a creped air-dried fibrous structure layer and with three-dimensional patterns, wherein the sanitary tissue product has a slip stick coefficient of friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or lessat 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick test method (grip-slip) of the friction and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility testing of the stack and elastic swelling. In another example of the present invention, the sanitary tissue product is a multilayer creped sanitary tissue product, for example a double layer, for example, a sanitary tissue product having a slip stick coefficient (slip adhesion). ) friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the test method of slip stick and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) such as measured by the compressibility test method of the battery e t of elastic swelling.
[0015] In another example of the present invention, the sanitary tissue product is a multilayer creped sanitary tissue product, for example a double layer, for example a sanitary tissue product, comprising at least one layer of fibrous, creped and three-dimensional pattern, for example a creped air-dried fibrous structure layer with a three-dimensional pattern, wherein the sanitary tissue product has a slip stick coefficient of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adh erence-slip) of the friction and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 (log (g / po2)) as measured by method of testing the compressibility of the pile and elastic swelling. In one example, a creped toilet tissue product of the present invention comprises a fiber structure dried by air circulation. The air-dried fibrous structure may be formed on an air-circulating drying fabric designed such that the air-circulating dried fibrous structure and / or the creped tissue product including the fibrous structure dried by air circulation show a slip stick coefficient of friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 ( Coefficient of friction * 10000) as measured by the slip stick coefficient (friction slip) test method, and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mil s / (log (g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling. In another example, the air-flow-dried fibrous structure may be formed on an air-circulating drying belt, comprising a resin pattern, designed in such a way that the air-circulated dried fiber structure and / or or the creped tissue product comprising the air-dried fibrous structure exhibits a slip stick coefficient of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (adhesion-slip), and a compressibility greater than 36 and / or greater than 38 and / or superior ure at 40 and / or greater than 42 and / or greater than 46 mils / (log (g / in)) as measured by the method of compressibility test of the stack and elastic swelling. In another example, a sanitary tissue product of the present invention is a creped multilayer sanitary tissue product comprising at least one air-circulated fiber structure having a plurality of pulp fibers in which the product of the creped multilayer sanitary tissue type shows a slip stick coefficient of friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 ( Coefficient of friction * 10000) as measured by the slip stick coefficient (friction slip) test method, and a compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling. In another example, a sanitary tissue product of the present invention is a creped multilayer sanitary tissue product comprising at least one air-circulated creped fibrous structure having a plurality of pulp fibers, wherein crepe multilayer sanitary tissue product exhibits a slip stick coefficient of friction of less than 740 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less at 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient (friction slip) test method, and compressibility greater than 36 and / or greater than 38 and / or greater than 40 and / or higher ure at 42 and / or greater than 46 mils / (log (g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling.
[0016] In one example of the present invention, the sanitary tissue product of the present invention exhibits a slip stick coefficient of less than 314 and / or less than 312 and / or less than 300 and / or less than 300. 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip-stick coefficient of friction test method, and superior compressibility at 19 and / or greater than 20 and / or greater than 25 and / or greater than 30 and / or greater than 36 and / or greater than 38 and / or greater than 40 and / or greater than 42 and / or greater than 46 mils / (log (g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling. In another example of the present invention, the sanitary tissue product of the present invention exhibits a plate rigidity of less than 8.3 and / or less than 8 and / or less than 6 and / or less than 5 and / or or less than 3 and / or less than 2 and / or greater than 0 and / or greater than 0,5 and / or greater than 1 and / or greater than 1,25 and / or greater than 1,5 and / or greater than 1.75 N * mm as measured by the rigidity test method of the plate, and an elastic swelling value greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of compressibility test of the stack and elastic inflator. In another example of the present invention, the sanitary tissue product of the present invention is a multilayer sanitary tissue product and / or comprises a creped fibrous structure which exhibits a plate rigidity of less than 2.9 and / or less than 2.75 and / or less than 2.25 and / or less than 2 and / or greater than 0 and / or greater than 0.5 and / or greater than 1 and / or greater than 1.25 and / or greater than 1.5 and / or greater than 1.75 N * mm as measured by the rigidity test method of the plate, and an elastic swelling value greater than 64 and / or greater than 70 and / or greater than 75 and / or greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of testing the compressibility of the pile and elastic swelling. In another example of the present invention, the sanitary tissue product of the present invention is a multilayer sanitary tissue product which exhibits a plate stiffness of less than 1.6 and / or less than 1.5 and / or less than 1.4 and / or greater than 0 and / or greater than 0.5 and / or greater than 1 and / or greater than 1.2 N * mm as measured by the rigidity test method of the plate, and an elastic swelling value greater than 56 and / or greater than 60 and / or greater than 64 and / or greater than 70 and / or greater than 75 and / or greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of compressibility test of the stack and elastic inflator. In another example of the present invention, the sanitary tissue product of the present invention exhibits a plate rigidity of less than 2.2 and / or less than 2.1 and / or less than 2 and greater than 0 and / or or greater than 0.5 and / or greater than 1 and / or greater than 1.2 and / or greater than 1.4 and / or greater than 1.6 and / or greater than 1.75 N * mm such that measured by the rigidity test method of the plate, an elastic swelling value greater than 56 and / or greater than 60 and / or greater than 64 and / or greater than 70 and / or greater than 75 and / or greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured according to the method of compressibility test of the stack and elastic foaming, and a compressibility greater than 34.5 and / or greater than 37 and / or greater than 40 and / or greater than 42 and / or greater than 45 and / or greater than 50 and / or greater than 55 mils / (log (g / in2)) as measured by the method of compressibility test of the pile and elastic swelling. In another example of the present invention, the sanitary tissue product of the present invention exhibits a plate rigidity of less than 8.3 and / or less than 8 and / or less than 6 and / or less than 5 and / or or less than 3 and / or less than 2 and / or greater than 0 and / or greater than 0,5 and / or greater than 1 and / or greater than 1,25 and / or greater than 1,5 and / or greater at 1.75 N * mm as measured by the rigidity test method of the plate, an elastic swelling value greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of test for compressibility of the cell and elastic inflator, and a compressibility greater than 30 and / or greater than 32 and / or greater than 34.5 and / or greater than 37 and / or greater than 40 and / or greater than 42 and or greater than 45 and / or greater than 50 and / or greater than 55 mils / (log (g / in)) as measured by Edited test of compressibility of the pile and elastic inflating. In another example of the present invention, the sanitary tissue product of the present invention exhibits a plate rigidity of less than 2.2 and / or less than 2.1 and / or less than 2 and / or greater than 0 and / or greater than 0.5 and / or greater than 1 and / or greater than 1.2 and / or greater than 1.4 and / or greater than 1.6 and / or greater than 1.75 N * mm such as measured by the rigidity test method of the plate, a compressibility greater than 33 and / or greater than 34.5 and / or greater than 37 and / or greater than 40 and / or greater than 42 and / or greater than 45 and / or greater than 50 and / or greater than 55 mils / (log (g / po 2)) as measured by the method of compressibility test of the pile and elastic swelling, a basis weight less than 25 and / or less at 24 and / or less than 23 and / or less than 22 and / or less than 21.5 and / or less than 21 and / or greater than 0 and / or greater than And / or greater than 15 pounds / 3000 square feet (24.45 g / m 2) as measured by the surface mass test method. In another example of the present invention, the sanitary tissue product of the present invention exhibits a compressibility greater than 45 and / or greater than 45.6 and / or greater than 50 and / or greater than 55 mils / (log ( g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling, and a basis weight less than 25 and / or less than 24.7 and / or less than 24 and / or less than 23 and / or less than 22 and / or less than 21.5 and / or less than 21 and / or greater than 0 and / or greater than 10 and / or greater than 15 pounds / 3000 ft2 (24.45 g / m2) As measured by the surface mass test method. In another example of the present invention, the sanitary tissue product of the present invention is a multilayer sanitary tissue product that exhibits compressibility greater than 0 and / or greater than 10 and / or greater than 15 and / or greater. at 20 mils / (log (g / po 2)) as measured by the method of compressibility testing of the pile and elastic swell, and a basis weight less than 23 and / or less than 22.9 and / or lower at 22 and / or less than 21.5 and / or less than 21 and / or greater than 0 and / or greater than 10 and / or greater than 15 pounds / 3000 ft2 (24.45 g / m2) as measured in accordance with the surface mass test method. In another example of the present invention, the sanitary paper product of the present invention comprises a fibrous structure creped such that the sanitary tissue product has a compressibility greater than 32 and / or greater than 32.25 and and / or greater than 33 and / or greater than 34.5 and / or greater than 37 and / or greater than 40 and / or greater than 42 and / or greater than 45 and / or greater than 50 and / or greater than 55 mils / (log (g / po 2)) as measured according to the method of testing for compressibility of the cell and elastic swell and mass resistance and a basis weight less than 23 and / or less than 22.9 and / or less than 22 and / or less than 21.5 and / or less than 21 and / or greater than 0 and / or greater than 10 and / or greater than 15 pounds / 3000 ft2 (24.45 g / m2) as measured according to the surface mass test method. In another example of the present invention, the sanitary tissue product of the present invention comprises a fibrous structure creped such that the sanitary tissue product has a compressibility greater than 36 and / or greater than 37 and / or greater than 40 and / or greater than 42 and / or greater than 45 and / or greater than 50 and / or greater than 55 and / or less than 115 and / or less than 100 and / or less than 90 mils / (log ( g / po 2)) as measured by the method of compressibility test of the stack and elastic swelling and a basis weight less than 29.6 and / or less than 29 and / or less than 28 and / or less than 27 and and / or less than 25 and / or less than 24 and / or less than 23 and / or less than 22.9 and / or less than 22 and / or less than 21.5 and / or less than 21 and / or greater than 0 and / or greater than 10 and / or greater than 15 pounds / 3000 ft2 (24.45 g / m2) as measured by the surface mass test method. In another example of the present invention, the sanitary tissue product of the present invention has a slip stick coefficient of less than 950 and / or less than 900 and / or less than 850 and / or less at 800 and / or less than 775 and / or less than 725 and / or less than 700 and / or less than 625 and / or less than 620 and / or less than 500 and / or less than 340 and / or less than 314 and / or less than 312 and / or less than 300 and / or less than 290 and / or less than 280 and / or less than 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the method of slip-slip coefficient test (adhesion-slip) and an elastic swell value greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of compressibility test of the stack and elastic inflating.
[0017] In another example of the present invention, the sanitary tissue product of the present invention has a slip stick coefficient of less than 300 and / or less than 290 and / or less than 280 and / or less at 275 and / or less than 260 (Coefficient of friction * 10000) as measured by the slip stick coefficient test method (grip-slip) of the friction and an elastic inflating value greater than 55 and / or greater than 56 and / or greater than 60 and / or greater than 64 and / or greater than 70 and / or greater than 75 and / or greater than 80 and / or greater than 82 and / or greater than 84 cm3 / g as measured by the method of compressibility test of the stack and elastic inflator. The fibrous structures and / or sanitary tissue products of the present invention may be creped or uncrimped. The fibrous structures and / or sanitary tissue products of the present invention can be made wet or dry.
[0018] The fibrous structures and / or sanitary tissue products of the present invention may be embossed. The fibrous structures and / or sanitary tissue products of the present invention may comprise a surface softening agent or be free of a surface softening agent. In one example, the sanitary tissue product is a non-lotion impregnated toilet tissue product, such as a sanitary tissue product comprising a fibrous structure layer not impregnated with a lotion, for example, a fibrous structure layer. The air-drying and non-lotion-impregnated, for example, air-drying, creped and non-lotion-impregnated fibrous structure layer and / or a layer of fibrous structure subject to air circulation drying, not creped and not impregnated with lotion. In another example, the sanitary tissue product may comprise a tissue-creped and non-lotion impregnated fibrous structure layer and / or a non-lotion impregnated fibrous structure layer. The fibrous structures and / or sanitary tissue products of the present invention may comprise trichome fibers and / or be devoid of trichome fibers. The fibrous structures and / or sanitary tissue products of the present invention can exhibit the compressibility values alone or in combination with the slip stick coefficient values, with or without the aid of surface softening agents. In other words, the sanitary tissue products of the present invention can have the compressibility values described above only or in combination with the slip stick coefficient values when softening agents are present. are not present on and / or in the sanitary tissue products; in other words, the sanitary tissue product is free of surface softening agents. This does not mean that the sanitary tissue products themselves can not include surface softening agents. This simply means that when the sanitary tissue product is manufactured without adding the surface softening agents, the sanitary tissue product exhibits the compressibility and slip stick coefficient values of the friction of the present invention. invention. The addition of a surface softening agent to such a sanitary tissue product within the scope of the present invention (without the need for a surface softening agent or other chemical product ) can improve the compressibility and / or the slip stick coefficient of the friction of the sanitary tissue product to a certain extent. However, sanitary tissue products requiring the inclusion of surface softening agents on and / or in them to fall within the scope of the present invention, in other words, to achieve compressibility and slip stick coefficient of the present invention do not fall within the scope of the present invention. Patterned Molding Elements The sanitary tissue products of the present invention and / or the fibrous structure layers used in the sanitary tissue products of the present invention are formed on patterned molding elements which produce the sanitary products of the present invention. hygienic paper type of the present invention. In one example, the patterned molding element comprises a non-random repeating pattern. In another example, the patterned molding element comprises a resin pattern. A "reinforcing element" is a desirable (but not necessary) element in some examples of a molding element, serving primarily to provide or facilitate the integrity, stability and durability of the molding element including, for example, a resin material. The reinforcing member may be liquid permeable or partially liquid pervious, may have a variety of embodiments and weave patterns, and may include a variety of materials, such as, for example, a plurality of interlaced yarns. (including Jacquard woven patterns and the like), felt, plastic, other suitable synthetic material, or any combination thereof. As illustrated in FIGS. 2A and 2B, a non-limiting example of a patterned molding element adapted for use in the present invention comprises an air circulation drying belt (10). The air circulation drying belt (10) comprises a plurality of discrete corrugations (12) formed by resin line segments (14) arranged in a non-random repeating pattern such as a pattern. woven, for example, a herringbone pattern. The discrete undulations (12) are dispersed in a network of dispersed bearings (16), which constitute a deflection conduit in which portions of a fibrous structure layer are fabricated on the air circulation drying belt (10). Figures 2A and 2B, deviation. Figure 3 is a MikroCAD image of a resulting toilet tissue product (18) manufactured on the air circulation drying belt (10). The sanitary tissue product (18) comprises a continuous pad region (20) disclosed by the continuous pad array (16) of the air flow drying belt (10) of Figs. 2A and 2B. The sanitary tissue product (18) further comprises discrete join regions (22) revealed by the discrete undulations (12) of the air circulation drying belt (10) of Figs. 2A and 2B. The region of continuous pads (20) and the discrete join regions (22) may have different densities; for example, one or more discrete join regions (22) may have a density greater than the density of the continuous bearing region (20). As illustrated in FIGS. 4A-4C, a non-limiting example of another patterned molding element adapted for use in the present invention comprises an air-circulating drying belt (10). The air circulation drying belt (10) comprises a plurality of semi-continuous corrugations (24) formed by semicontinuous resin line segments (26) arranged in a non-random repeating pattern, for example, a matify of semi-continuous lines repeating substantially in: the cross machine direction supported on a support fabric comprising filaments (27). In this case, the semi-continuous lines are curvilinear, for example, sinusoidal. The semi-continuous corrugations (24) are spaced from adjacent semi-continuous corrugations by semi-continuous bearings (28), which constitute deflection conduits in which portions of a fibrous structure layer which are fabricated on the belt Figure 4A-4C air-flow drying lines deviate. As illustrated in Figures 5A-5D; a resultant sanitary tissue product (18) produced on the air flow drying belt (10) of Figs. 4A to 4C comprises regions of continuous-felt pads (30) revealed by the semilinear pads. continuous flow (28) of the air circulation drying belt (10) of the Figures. 4A to 4C. The sanitary tissue product (18) further comprises semi-continuous joint regions (32) revealed by the semi-continuous corrugations (24) of the air circulation drying belt (10) of Figs. 4A to 4C. . The semi-continuous bearing regions (30) and the semi-continuous joint regions (32) may have different densities; for example, one or more semicontinuous joint regions (32) may have a density greater than the density of one or more semicontinuous bearing regions (30).
[0019] To avoid being limited by theory, a combination (wet and dry crepe, creped fabric, fast transfer, etc.) is an integral part of the manufacture of a fibrous structure and / or a sanitary paper type, contributing to achieving the desired balance of strength, elongation, softness, absorption capacity, etc. Supports, transport and molding of fibrous structures used in the paper making process, such as rolls, webs, felts, fabrics, belts, etc. have been designed differently to interact with the approximation to better control the properties of the fibrous structure and / or the sanitary tissue product. Previously, it has been thought that it is advantageous to avoid highly ST-shaped wave designs that result in SM oscillations of the approach forces. Surprisingly, however, it has been found that the molding element of Figs. 4A-4C provides a patterned molding element having ST-shaped semi-continuous corrugations which allows better control of the molding and the elongation of the mold. the fibrous structure while avoiding the negative aspects of the past.
[0020] As illustrated in FIGS. 6A-6C, a non-limiting example of another patterned molding element adapted for use in the present invention comprises an air-circulating drying belt (10). The air flow drying belt (10) comprises a plurality of semi-continuous corrugations (24) formed by semi-continuous resin line segments (26) arranged in a non-random repeating pattern by for example, a pattern of semi-continuous lines repeating substantially in the direction of the machine supported on a support fabric comprising filaments (27). In this case, contrary to Figures 4A to 4C, the semi-continuous lines are substantially straight, they are not curvilinear. The semicontinuous corrugations (24) are spaced from the adjacent semi-continuous corrugations by semi-continuous bearings (28), which constitute deflection conduits in which portions of a fibrous structure layer which are fabricated on the belt. air circulation drying of Figures 6A-6C, deviate. In addition to the semi-continuous resin line segments (26), the air flow drying belt (10) also includes a plurality of discrete ripples (12) formed by discrete line segments (14) that overlap one or more semi-continuous corrugations (24). The arrangement of the discrete undulations (12) creates discrete pads (34). In one case, this air circulation drying belt (10) is referred to as the double cavity air drying belt, which means that the semi-continuous corrugations (24) are first created, then the discrete corrugations (12). ) are formed so that they overlap one or more semi-continuous corrugations (24) and a multi-elevation belt and a pattern on the resulting sanitary tissue product are formed. As illustrated in Figures 7A and 7B; a resultant toilet paper product (18) produced on the air circulation drying belt (10) of Figs. 6A to 6C comprises semi-continuous bearing regions (30) at a first elevation (the elevation 1a). lower) revealed by the semi-continuous bushings (28) of the air-flow drying belt (10) of Figs. 6A-6C. The sanitary tissue product (18) further comprises semi-continuous joint regions (32) revealed by the semi-continuous corrugations (24) of the air circulation drying belt (10) of Figs. 6A to 6C . In addition, the sanitary tissue product (18) also includes discrete pad regions (34). The semi-continuous bearing regions (30) and the semi-continuous joint regions (32) may have different densities; for example, one or more semicontinuous joint regions (32) may have a density greater than the density of one or more semicontinuous bearing regions (30).
[0021] Examples of Manufacture of Sanitary Paper Products The sanitary tissue products of the present invention may be manufactured by any suitable papermaking process as long as a molding element of the present invention is used in the manufacture of sanitary tissue products. a sanitary tissue product or at least one layer of the fibrous structure of the sanitary tissue product and that the sanitary tissue product has a compressibility and rigidity values of the plates of the present invention. The method may be a sanitary tissue product manufacturing method that uses a cylindrical dryer such as a Yankee (a Yankee process) or it may be a non-Yankee process such as is used to manufacture fibrous structures and / or hygienic tissue products of substantially uniform and / or uncrimped density. Alternatively, the fibrous structures and / or sanitary tissue products may be manufactured by an air jet process and / or melt blown and / or spunbond processes and any combination thereof. provided that the fibrous structures and / or sanitary tissue products of the present invention are made therefrom.
[0022] As illustrated in FIG. 8, an example of a method and equipment, represented by number 36 for the manufacture of a sanitary tissue product according to the present invention, includes providing an aqueous dispersion of fibers (A fibrous manufacturing composition or fiber slurry) to an arrival box (38) which can be of any advantageous design. From the headbox (38), the aqueous fiber dispersion is delivered to a first porous member (40), typically a Fourdrinier web, to produce an embryonic fibrous structure (42). The first porous member 40 may be supported by a head roll 44 and a plurality of return rollers 46 of which only two are shown. The first porous member 40 may be propelled in the direction indicated by the directional arrow 48 by drive means, not shown. Optional auxiliary units and / or devices commonly associated with fibrous structure-making machines and the first porous element 40, but not shown, include marbles, drips, suction boxes, tension rollers, support rollers, canvas cleaning showers, and the like. After the aqueous dispersion of fibers is deposited on the first porous element (40), the embryonic fibrous structure (42) is formed, generally by removing a portion of the aqueous dispersion medium by techniques well known to those skilled in the art. this technique. Suction boxes, marbles, squeegees, and the like are useful for effecting the removal of water. The embryonic fibrous structure (42) is movable with the first porous member (40) around the return roller (46) and is brought into contact with a patterned molding member (50) such as a shoulder belt (40). air circulation drying with three-dimensional patterns. While in contact with the patterned molding member (50), the embryonic fibrous structure (42) will be deflected, rearranged, and / or further dehydrated. The patterned molding member (50) may be in the form of an endless belt. In this simplified representation, the patterned molding member (50) passes near and around patterned molding member return rollers (52) and a printing pinch roll (54) and is movable in the direction indicated by the directional arrow (56). Associated with the patterned molding member (50), but not illustrated, various support rolls, other return rollers, cleaning means, drive means, and the like well known to those skilled in the art can be commonly used in fibrous structure manufacturing machines. After the embryonic fibrous structure (42) is associated with the patterned molding member (50), the fibers within the embryonic fibrous structure (42) are deflected into pads and / or a network of pads ("). deviation lines ") present in the patterned molding element (50). In one example of this process step, there is virtually no removal of water from the embryonic fibrous structure (42) through the deflection conduits after the embryonic fibrous structure (42) has been associated with the element. pattern molding (50), but prior to fiber deflection in the deflection conduits. Additional water removal from the embryonic fibrous structure (42) may occur during and / or after the moment the fibers are being deflected into the deflection conduits. Removal of water from the embryonic fibrous structure (42) can continue until the consistency of the embryonic fibrous structure (42) associated with the patterned molding element (50) is increased by approximately 25%. % to about 35%. Once this consistency of the embryonic fibrous structure (42) is obtained, then the embryonic fibrous structure (42) is designated as an intermediate fibrous structure (58). During the formation process of the embryonic fibrous structure (42), sufficient water can be removed, as by a non-compressional method, from the embryonic fibrous structure (42) before it associates with the element. patterned molding (50) so that the consistency of the embryonic fibrous structure (42) can be from about 10% to about 30%. While the applicants refuse to be bound to any particular theory of operation, it appears that the deflection of the fibers into the embryonic fibrous structure and the removal of water from the embryonic fibrous structure begin at almost the same time. Embodiments may, however, be contemplated wherein the deflection and water removal are sequential operations. Under the influence of the applied fluid differential pressure, for example, the fibers may be deflected in the deflection conduit with joint reordering of the fibers.
[0023] Water removal can occur with continued reordering of the fibers. The deflection of the fibers and the embryonic fibrous structure may cause an apparent increase in the area of the embryonic fibrous structure. In addition, the reordering of the fibers may appear to cause reordering in the spaces or capillaries existing between and / or among the fibers.
[0024] It is believed that fiber reordering may take one of two modes depending on a number of factors such as, for example, fiber length. The free ends of the long fibers can only be bent in the space defined by the deflection conduit while the opposite ends are constrained in the region of the ridges. The shorter fibers, on the other hand, can actually be transported from the peak region into the deflection conduit (the fibers in the deflection conduits will also be rearranged relative to each other). Of course, it is possible for both modes of reordering to occur simultaneously.
[0025] As mentioned, water removal occurs during and after deflection; this removal of water may result in decreased fiber mobility in the embryonic fibrous structure. This decrease in fiber mobility may tend to fix and / or freeze fibers in place after they have been deflected and rearranged. Of course, drying the fibrous structure in a subsequent step of the process of the present invention serves to secure and / or more firmly set the fibers in position. Any advantageous means known as conventional in papermaking art can be used to dry the intermediate fibrous structure (58). Examples of such a suitable drying method include subjecting the intermediate fibrous structure (58) to conventional and / or circulating dryers and / or fryers. In an example of a drying process, the intermediate fibrous structure (58) in association with the patterned molding member (50) passes around the roll of the patterned molding member (52) and moves in the direction indicated by the directional arrow (56). The intermediate fibrous structure (58) may first pass through an optional pre-dryer (60). This pre-dryer 60 may be a conventional circulation dryer (hot air dryer) well known to those skilled in the art. Optionally, the pre-dryer 60 may be a so-called capillary dewatering apparatus. In such an apparatus, the intermediate fibrous structure (58) passes over a sector of a cylinder having preferential capillary size pores through its porous cylindrical cover. Optionally, the pre-dryer 60 may be a combination of a capillary dewatering apparatus and a circulation dryer. The amount of water removed in the pre-dryer (60) can be controlled so that a pre-dried fibrous structure (62) leaving the pre-dryer (60) has a consistency ranging from about 30 ° AI to about 98%. The pre-dried fibrous structure (62), which may still be associated with the patterned molding member (50), may pass around another return roll (52) of the patterned molding element it moves to a printing pinch roll (54). As the pre-dried fibrous structure (62) passes through the nip formed between the printing nip roll (54) and a surface of a Yankee (64), the pattern formed by the upper surface (66) ) of the patterned molding element (50) is printed in the pre-dried fibrous structure (62) to form a three-dimensional patterned fibrous structure (68). The labeled fibrous structure (68) can then adhere to the surface of the Yankee (64) where it can be dried to a consistency of at least about 95%. The three-dimensional patterned fibrous structure (68) can then be narrowed by creping the three-dimensional patterned fibrous structure (68) with a crepe blade (70) to remove the three-dimensional patterned fibrous structure (68) from the surface of the Yankee ( 64) resulting in the production of a creped fibrous structure (72) with three-dimensional patterns according to the present invention. As used herein, narrowing refers to the reduction in length of a dry fibrous structure (having a consistency of at least about 90% and / or at least about 95%) that occurs when energy is applied to the dry fibrous structure such that the length of the fibrous structure is reduced and the fibers in the fibrous structure are rearranged with joint dislocation of the fiber-fiber bonds. Shrinkage can be accomplished in any of several well-known ways. A common method of shrinking is creping. The creped fibrous structure (72) with three-dimensional patterns may be subjected to post-processing steps such as calendering, tufting operations, and / or embossing and / or conversion. Another example of a paper making process suitable for the manufacture of sanitary tissue product of the present invention is illustrated in FIG. 9. FIG. 9 illustrates an uncreped air circulation drying process. In this example, a multilayered headbox (74) deposits an aqueous suspension of papermaking fibers between forming webs (76 and 78) to form an embryonic fibrous structure (80). The embryonic fibrous structure (80) is transferred to a transfer tissue (82) moving more slowly using at least one suction box (84). The vacuum level used for fibrous structure transfers can range from 10 to about 50.8 kilopascals [from about 3 to about 15 inches of mercury (from 76 to about 381 millimeters of mercury)]. The suction box (84) (negative pressure) can be supplemented or replaced by the use of the positive pressure on the opposite side of the embryonic fibrous structure (80) to blow the embryonic fibrous structure (80) onto the next tissue. more than or instead of vacuuming it on the next fabric. In addition, one or more suction rollers may be used to replace the suction box (s) (84).
[0026] The embryonic fibrous structure (80) is then transferred to a molding element (50) of the present invention, such as an air-circulating drying fabric, and sent to air-circulating dryers (86 and 88). ) to dry the embryonic fibrous structure (80) to form the three dimensional patterned fiber structure (90). While remaining supported by the molding member (50), the three dimensional patterned fiber structure (90) is finally dried to a consistency of about 94% or more. After drying, the three-dimensional patterned fibrous structure (90) is transferred to the molding member (50) to the tissue (92), and subsequently briefly compressed between the tissue (92 and 94). The dried three dimensional patterned fiber structure (90) remains with the fabric (94) until it is wound on the reel (96) ("stock-reel") into a finished fiber structure. Subsequently, the three-dimensional patterned finished fiber structure (90) may be unwound, calendered, and converted to the sanitary tissue product of the present invention, such as a sanitary tissue roll, in any suitable manner. Yet another example of a paper making process suitable for the manufacture of sanitary tissue product of the present invention is illustrated in Figure 10. Figure 10 illustrates a papermaking machine (98) equipped with a conventional dual forming fabric section (100), a felting arrangement section (102), a shoe pressing section (104), a molding element section (106), here a fabric section of creping, and a Yankee section (108) suitable for carrying out the present invention. The forming section (100) comprises a pair of forming fabrics (110 and 112) supported by a plurality of rollers (114) and a forming roll (116). An arrival box (118) provides a paper making composition at a nip (120) between the forming roll (116) and the roll (114), as well as the fabrics (110 and 112). The composition of manufacture forms an embryonic fibrous structure (122) which is dehydrated on the tissues (110 and 112), using vacuum, for example, by means of the suction box (124). The embryonic fibrous structure (122) is advanced to a paper making felt (126), which is supported by a plurality of rollers (114), and the felt (126) is in contact with a shoe press roll ( 128). The embryonic fibrous structure +122) is of low consistency when transferred to the felt (126). The transfer can be assisted by vacuum; such as by a suction roller, if desired, a lifting roller or suction shoe, techniques well known in the art. When the embryonic fibrous structure (122) reaches the roll of the shoe press (128), it may have a consistency of 10 to 25% upon entry into the nip of the shoe press (130) between the roll the shoe press (128) and the transfer roller (132). The transfer roller (132) may be a heated roller if desired. Instead of a shoe press roll (128), a conventional suction pressure roll can be used. If a shoe press roll (128) is used, it is desirable that the roll (114) immediately before the shoe press roll (128) is an effective pick-up roller for removing water from the felt ( 126) before it enters the nip of the shoe press (130), since the water from the production composition will be compressed in the felt (126) in the nip & the shoe press (130). In any case, the use of a suction roll for the roll (114) is generally desirable to ensure that the embryonic fibrous structure (122) remains in contact with the felt (126) upon change of direction, as a specialist in the art can see in the diagram.
[0027] The embryonic fibrous structure (122) is wet pressed onto the felt (126) in the nip of the shoe press (130) using the shoe press (134). The embryonic fibrous structure (122) is thus dehydrated by compacting at the nip of the shoe press (130), generally increasing the consistency by 15 points or more at this stage of the process. The configuration illustrated at the contact line of the shoe press (130) is generally referred to as a shoe press; in the context of the present invention, the transfer roller (132) functions as a tracer cylinder, which transmits the embryonic fibrous structure (122) at high speed, typically from 1000 feet / minute (ft / min) to 6000 ft / sec. min (305 to 1829 m / s) at the section of the patterned molding element (106) of the present invention, for example a section of air-flow drying fabric, also referred to in this process as a section of crepe fabric. The transfer roller (132) has a smooth transfer roller surface (136) that can be provided with an adhesive and / or form release products if necessary. The embryonic fibrous structure (122) adheres to the surface of the roller (136) which rotates at a high angular rate because the embryonic fibrous structure (122) continues to advance in the machine direction indicated by the arrows (13 &). On the transfer roller (132), the embryonic fibrous structure (122) generally has an apparent and random fiber distribution.
[0028] The embryonic fibrous structure (122) penetrates the nip of the shoe press (130) generally to consistencies of 10 to 25%, and is dehydrated and dried to a consistency of about 25 to about 70%, at when it is transferred to the molding element (140) according to the present invention, here a patterned creping fabric, as illustrated in the diagram. The molding member (140) is supported by a plurality of rollers (114) and a press nip roll (142); it forms a molding contact line (144), for example a tissue creping contact line, with a transfer roller (132) as illustrated.
[0029] The molding member (140) defines a crepe nip on the distance over which the molding member (140) is adapted to communicate with the transfer roller (132); that is, it exerts significant pressure on the embryonic fibrous structure (122) against the transfer roller (132). At this end, the press (or creping) backing roll (142) can be provided with a deformable flexible surface which will increase the length of the crepe nip and increase the crepe angle of the fabric between the molding member (140), the embryonic fibrous structure (122) and the point of contact, or a shoe press roll can be used as a press nip roll (142) to increase contact with the fibrous structure embryonic (122) in the nip of the high impact molding element (144), where the embryonic fibrous structure (122) is transferred to the molding element (140) and advanced in the machine direction ( 138). By using different equipment on the molding element (144), it is possible to adjust the crepe angle of the fabric or the routing angle of the molding element (144). Thus, it is possible to influence the nature and amount of fiber redistribution, delamination / delamination occurring at the nip of the molding member (144) by adjusting these nip parameters. . In some embodiments, it may be desirable to restructure the z-axis fiber agglomeration characteristics, while in other cases it may be desirable to influence the properties only in the plane of the structure. fibrous. The parameters of the contact line of the molding element can influence the distribution of the fibers in the fibrous structure in different directions, in particular inducing changes in the z axis as well as in the SM and the ST. In all cases, the transfer of the transfer roller to the molding element has a strong impact since the tissue moves more slowly than the fibrous structure and a significant change of speed occurs. As a general rule, the fibrous structure is creped by 10 to 60% or more when transferring the transfer roller to the molding element. A nip of the molding member (144) generally extends a contact line distance from the molding member of from about 1/8 "(0.3175 cm) to about 2" (5 mm). , 08 cm), typically 1/2 "(1.27 cm) to 2" (5.08 cm). For a molding member (140), for example, a creping fabric, with 32 strands per inch (32 strands per 2.54 cm), an embryonic fibrous structure (122) thus encounters about 4 to 64 weft filaments in the contact line (144) of the molding element. The pinching pressure in the nip of the molding element (144), i.e. the loading between the roller (142) and the transfer roller (132) is of a suitable value of 20. at 100 pounds per linear inch (PLI) (3503 to 17513 N / m). After having passed through the nip of the molding element (144), and, for example, having creped the embryonic fibrous structure (122), a three-dimensional patterned fibrous structure (146) continues to advance in the SM (138). ) where it is wet-pressed on a Yankee (dryer) cylinder (148) in the transfer contact line (150). Transfer to the nip (150) occurs at a consistency of the three dimensional patterned fiber structure (146) generally ranging from about 25 to about 70%. At these consistencies, it is difficult to adhere the three-dimensional patterned fiber structure (146) to the surface of the Yankee (152) firmly enough to completely remove the three dimensional patterned fiber structure (146) from the molding member (140). ). This aspect of the process is important, especially when it is desired to use a high speed drying hood and maintain high impact creping conditions. In this respect, it should be noted that conventional air-drying processes do not employ high speed hoods because there is insufficient adhesion to the Yankee. It has been found according to the present invention that the use of particular adhesives is combined with a moderately moist fibrous structure (consistency of 25 to 70%) so that it adheres sufficiently to the Yankee to allow high speed operation. of the system and air drying by impact of high speed jets. In this regard, a polyvinyl alcohol / polyamide adhesive composition as set forth above is applied at (154) as needed.
[0030] The three-dimensional patterned fibrous structure is dried on the Yankee cylinder (148) which is a heated cylinder and by a high velocity jet of air in the Yankee hood (156). As the Yankee roll (148) rotates, the three dimensional patterned fiber structure (146) is creped from the Yankee roll (148) by the crepe squeegee (158) and wound onto a call roll (160). The creping of the paper from a Yankee can be performed using a wave creping blade, such as that disclosed in US Patent No. 5,690,788. The use of the wave creping blade has been shown to be a carrier. several advantages when it is used in the production of paper products. In general, ripple paper creped products have greater thickness, increased ST stretch, and higher interstitial volume than comparable paper products produced using conventional crepe blades. . All these changes brought about by the use of the wave blade tend to correlate with the perception of greater softness of the paper products. When a wet creping process is used, an air-impingement drier, an air-flow dryer, or a plurality of roll dryers may be used instead of a Yankee. Air impact dryers are disclosed in the following patents and applications: U.S. Patent No. 5,865,955 to Ilvespaaet et al. U.S. Patent No. 5,968,590 to Ahonen et al. U.S. Patent No. 6,001,421 to Ahonen et al. U.S. Patent No. 6,119,362 to Sundqvist et al. US Patent Application Serial No. 09 / 733,172, entitled Wet Crepe, Air Impact Drying Process for Absorbent Paper Production, now US Patent No. 6,432,267. A Circulation Drying Unit As is well known in the art and disclosed in US Pat. No. 3,432,936 to Cole et al. and a drum drying system is described in. U.S. No. 5,851,353. There is shown in Fig. 11 a papermaking machine (98), similar to that of Fig. 10, for use in the context of the present invention. A papermaking machine (98) is a triple fabric loop machine having a forming section (100) commonly referred to in the art as a crescent former. The forming section (100) includes a forming fabric (162) supported by a plurality of rollers such as the rollers (114). The forming section (100) also includes a forming roll (166) that supports a paper making felt (126) so that the embryonic fibrous structure (122) is formed directly on the felt (126). The arrangement of the felts (102) extends to a shoe press section (104) in which the wet embryonic fibrous structure (122) is deposited on a transfer roll (132) (also sometimes referred to as a counter roll) as as described above. Subsequently, the embryonic fibrous structure (122) is creped onto the molding element (140), such as crepe tissue, in the nip of the molding element (144) before being deposited. on the Yankee (148) in another press line (150). The papermaking machine (98) may include a idling roll, in some embodiments, however, the three-loop system may be configured in a number of ways for which a rotating roll is not required. This feature is particularly important in the repackaging of a paper machine in the sense that the cost of moving associated equipment, ie. the disintegrating or fiber processing equipment and / or the cumbersome and expensive drying equipment, such as the Yankee or a plurality of roll dryers, would make the cost of repackaging prohibitive unless the improvements can be configured from so to be compatible with existing installations. Figure 12 shows another example of a paper making process suitable in the manufacture of the sanitary tissue products of the present invention. Figure 12 illustrates a papermaking machine (98) for use in the context of the present invention. A papermaking machine (98) is a triple fabric loop machine having a forming section (100) commonly referred to in the art as a crescent former. The section (100) includes an arrival crate (118) that deposits a manufacturing composition on the forming fabric (110) supported by a plurality of rollers (114). The forming section (100) also includes a forming roll (166), which supports the paper making felt (126), so that the embryonic fibrous structure (122) is formed directly on the felt (126). The arrangement of the felts (102) extends to a shoe press section (104) in which the wet embryonic fibrous structure (122) is deposited on a transfer roll (132) and wet pressed together with she is transferred. Subsequently, the embryonic fibrous structure (122) is transferred to the section of the molding element (106), being transferred to and / or creped on the molding element (140) of the present invention, for example an air-circulation drying belt in the contact line of the molding element (144), for example a crepe-belt contact line, before being optionally drawn under vacuum by a suction box (168). ) and then deposited on the. Yankee (148) in another press nip (150) using a creping adhesive, as indicated above. The transfer to a Yankee machine of the crepe belt differs from conventional transfers in a conventional wet press (CWP) from a felt to a Yankee machine. In a CWP process, the pressures in the transfer line of contact may be about 87.6 kN / meter (500 PLI (87.6 kN / meter)), and the area of contact under pressure between the surface of the Yankee and the fibrous structure is close to or equal to 100%. The press roll can be a suction roll which can have a hardness of 25 to 30 μm. In contrast, a belt creping process of the present invention generally involves transferring to a Yankee machine with a pressurized contact area of 4 to 40% between the fibrous structure and the Yankee surface at a pressure of from 43.8 to 40.degree. 61.3 kN / in (250 to 350 PLI (43.8 to 61.3 kN / meter)). No suction is applied in the transfer contact line and a softer press roll is used, with a hardness of 35 to 45 P & J. The papermaking machine may include a suction roll, in some embodiments, however, the three-loop system may be configured in a number of ways for which a rotating roll is not required. This feature is particularly important in the repackaging of a paper machine in the sense that the cost of moving the associated equipment, i.e. the arrival crate, the disintegrating or fiber processing equipment and / or the cumbersome and expensive drying equipment, such as the Yankee or a plurality of roll dryers, would make the cost of repackaging prohibitive unless the enhancements may be configured to be compatible with existing installations. Non-Limiting Examples of Methods for Making Bathroom Tissue Products Example 1: Air Circulating Drying Belt The following example illustrates a non-limiting example for the preparation of a sanitary paper product comprising a fibrous structure. according to the present invention on a Fourdrinier fibrous structure (paper) manufacturing machine on a pilot scale.
[0031] An aqueous slurry of eucalyptus pulp fibers (Fibria Brazilian bleached hardwood kraft pulp) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the fiber feed box. hardwood. The eucalyptus fiber slurry from the hardwood box is pumped through a feed line to a hardwood mixing pump where the consistency of the slurry is reduced by about -3%. fiber weight at about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and lower chambers of a three-chamber, multi-ply feed box of a Fourdrinier wet paper machine.
[0032] In addition, an aqueous slurry of NSK paper pulp (Northern Softwood Kraft) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the wood fiber feed box. conifers. The NSK fiber slurry from the coniferous wood supply box is pumped through a feed pipe to be refined to a Canadian Standardized Freeness Index (CSF) of about 630. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then directed and distributed in the central chamber of a multi-ply, three-chambered box of a Fourdrinier wet paper machine. The wet paper machine has a layered arrival crate having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the top checkout and the lower checkout box. The NSK fiber slurry is directed to the central cashbox. The three fiber layers are simultaneously delivered in superimposed relationship on the Fourdrinier fabric to form a three-layered embryonic fibrous (web) structure, of which about 38% is upper side is made of eucalyptus fibers, about 38% is made of eucalyptus fibers on the lower side and about 24% is made of NSK fibers in the center. The dehydration is carried out through the Fourdrinier canvas and is assisted by a baffle and suction cups table cloth. The Fourdrinier Canvas is an 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier Canvas is approximately 750 feet per minute (228.6 meters per minute). The embryonic wet fibrous structure is transferred from the Fourdrinier web at a consistency of about 15% at the transfer point to a three dimensional patterned air circulation drying belt as shown in Figures 6A-6C. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The three-dimensional pattern air-drying belt is designed to provide a fibrous structure, as shown in FIGS. 7A and 7B, comprising a pattern of high density joint regions dispersed through a region of multi-stage continuous bearings. elevation. The multi-lift continuous bearing region comprises an intermediate density pad region (density between the high density corrugations and the other low density pad region) and a low density pad region formed by the deflection lines created by the semicontinuous hinge layer oriented essentially towards the machine. This three-dimensional pattern air-flow drying belt is formed by molding a first layer of impermeable resin surface of semi-continuous corrugations onto a fiber mesh support fabric similar to that shown in the Figures. 4B and 4C, then molding a second layer of an impermeable resin surface of discrete corrugations. The support fabric is a fine double-layer lattice of 98 x 52 filaments. The thickness of the footprint of the first resin layer is about 6 mils (0.154 millimeters) greater than the support fabric and the thickness of the footprint of the second resin layer is about 13 mils (0.3302 millimeters) superior to the supporting fabric.
[0033] Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried by blowing air through pre-dryers to a fiber consistency of about 53% by weight. . After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 80% polyvinyl alcohol (PVA 88-50) and about 20% CREPETROL® 457T20. CREPETROL® 457T20 is marketed by Hercules Incorporated of Wilmington, Del. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fiber surface. The fiber consistency is increased to about 97% before the fibrous structure is creped dry from the Yankee with a doctor blade. The squeegee has a bevel angle of about 25 degrees and is positioned relative to the Yankee to provide an impact angle of about 81 degrees. The Yankee is used at a temperature of about 275 ° F (135 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is wound into a roll (mother roll) in using a surface-driven wire feed drum having a peripheral speed of about 757 feet per minute (230.73 m / min) Two mother rolls of the fibrous structure are then converted to a sanitary tissue product by loading the structural roll fibrous in a unwinding support. The production speed is 400 feet / min (121.92 m / min). A stock reel of the fibrous structure is unwound and transported to the embossing support where the fibrous structure is filtered to form the embossing pattern in the fibrous structure, and then this is mixed with the fibrous structure of the other stock to make a multilayer toilet paper product (double layer). The multilayer sanitary tissue product is then transported over a slotted extruder through which surface chemical treatment can be applied. The multilayer sanitary tissue product is then transported to a winder where it is wound on a mandrel to form a spool. The multilayer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue type product rolls. The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above. Example 2: Circulation air drying belt The following example illustrates a non-limiting example for the preparation of a sanitary tissue product comprising a fibrous structure according to the present invention on a fibrous structure manufacturing machine (paper) from Fourdrinier to pilot scale. An aqueous slurry of eucalyptus pulp fibers (Fibria Brazilian bleached hardwood kraft pulp) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the fiber feed box. hardwood. The eucalyptus fiber slurry from the hardwood box is pumped through a feed line to a hardwood mix pump where the consistency of the slurry is reduced by about 3% by weight. fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and lower chambers of a three-chamber, multi-ply feed box of a Fourdrinier wet paper machine. In addition, an aqueous slurry of NSK paper pulp (Northern Softwood Kraft) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the wood fiber feed box. conifers. The NSK fiber slurry from the coniferous wood supply box is pumped through a feed pipe to be refined to a Canadian Standardized Freeness Index (CSF) of about 630. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then directed and distributed into the central chamber of a three-chamber, multi-layered checkbox of a Fourdrinier wet paper machine. The wet papermaking machine has a layered crate having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the top checkout and the lower checkout box. The NSK fiber slurry is directed to the central cashbox. The three layers of fibers are delivered simultaneously in superimposed relationship on the Fourdrinier fabric so as to form a three-layered embryonic fibrous structure (web), of which about 38% of the upper side is eucalyptus fibers, about 38% consists of eucalyptus fibers on the lower side and about 24% consists of NSK fibers in the center. The dehydration is carried out through the Fourdrinier canvas and is assisted by a baffle and suction cups table cloth. The Fourdrinier Canvas is an 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier Canvas is approximately 750 feet per minute (228.6 meters per minute).
[0034] The embryonic wet fibrous structure is transferred from the Fourdrinier web at a consistency of about 15% at the point of transfer to a three dimensional patterned air circulation drying belt as shown in Figures 4A-4C. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The three-dimensional pattern air-drying belt is designed to provide a fibrous structure, as shown in FIGS. 5A-5D including a pattern of low density semi-continuous bearing regions and density joint regions. high. This three-dimensional pattern air-drying belt is formed by molding an impermeable resin surface on a fiber mesh support fabric as shown in FIGS. 4B and 4C. The support fabric is a fine double-layer lattice of 98 x 52 filaments. The thickness of the resin footprint is about 11 mils (0.2794 millimeters) above the support fabric. Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried by blowing air through pre-dryers to a fiber consistency of about 53% by weight. . After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 80% polyvinyl alcohol (PVA 88-50) and about 20% CREPETROL® 457T20. CREPETROL® 457T20 is marketed by Hercules Incorporated of Wilmington, Del. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fiber surface. The fiber consistency is increased to about 97% before the fibrous structure is creped dry from the Yankee with a doctor blade. The doctor blade has a bevel angle of about 25 degrees and is positioned relative to the Yankee to provide an impact angle of about 81 degrees. The Yankee is used at a temperature of about 275 ° F (135 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is rolled into a roll (master roll) using a surface-driven reel drum having a peripheral speed of about 757 feet per minute (230.73 m / min). Two mother rolls of the fibrous structure are then converted into a sanitary tissue product by loading the fibrous structure roll into a roll holder. The production speed is 400 ft / min (121.92 m / min) A stock reel of the fibrous structure is unwound and transported to the embossing support where the fibrous structure is filtered to form the embossing pattern in the fibrous structure and then this is mixed with the fibrous structure of the other mother-roll to make a multi-layer (double-layer) sanitary tissue product. The multilayered sanitary paper product is then transported over a slit extruder through which surface chemical treatment can be applied. The multilayer sanitary tissue product is then transported to a winder where it is wound on a mandrel to form a spool. The multilayer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue product rolls. The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above. Example 3: Circulating air drying belt The following example illustrates a non-limiting example for the preparation of a sanitary tissue product comprising a fibrous structure according to the present invention on a fibrous structure manufacturing machine (paper ) from Fourdrinier on a pilot scale. An aqueous slurry of eucalyptus pulp fibers (Fibria Brazilian bleached hardwood kraft pulp) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the fiber feed box. hardwood. The eucalyptus fiber slurry from the hardwood box is pumped through a feed line to a hardwood mix pump where the consistency of the slurry is reduced by about 3%. by weight of fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and lower chambers of a three-chamber, multi-ply feed box of a Fourdrinier wet paper machine. In addition, an aqueous slurry of NSK (Northern Softwood Kraft) paper pulp fibers is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the wood fiber feed box. of conifers. The NSK fiber slurry from the coniferous wood supply box is pumped through a feed pipe to be refined to a Canadian Standardized Freeness Index (CSF) of about 630. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then directed and distributed in the central chamber of a multi-ply, three-chambered box of a Fourdrinier wet paper machine. The wet papermaking machine has a 10-layer headbox having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the top checkout and the lower checkout box. The NSK fiber slurry is directed to the central cashbox. The three fiber layers are delivered simultaneously in superimposed relationship on the Fourdrinier fabric so as to form a three-layered embryonic fibrous structure (web), of which about 38% of the upper side is eucalyptus fibers, about 38%. % is made of eucalyptus fibers on the lower side and about 24% is NSK fibers in the center. The dehydration takes place through the Fourdrinier canvas and is assisted by a baffle and canvas table suction boxes. The Fourdrinier Canvas is an 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier Canvas is approximately 750 feet per minute (228.6 meters per minute). The embryonic wet fibrous structure is transferred from the Fourdrinier web at a consistency of about 15% at the point of transfer to a three dimensional patterned air circulation drying belt as shown in Figures 2A and 2B. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The tridimensionnet4 air circulation drying belt. is designed to provide a fibrous structure, as illustrated in FIG. 3, comprising a pattern of high density discrete joint regions dispersed across a region of continuous low density bearings. This three-dimensional pattern air-drying belt is formed by molding an impermeable resin surface on a fiber mesh support fabric similar to that shown in Figures 4B and 4C. The support fabric is a double-layered lattice of 98 x 52 filaments. The thickness of the resin footprint is about 11 mils (0.2794 millimeters) above the support fabric. Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried by blowing air through pre-dryers to a fiber consistency of about 53%. weight. After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 80% polyvinyl alcohol (PVA 88-50) and about 20% CREPETROL® 457T20. CREPETROL® 457T20 is marketed by Hercules Incorporated of Wilmington, Del. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fiber surface. The fiber consistency is increased to about 97% before the fibrous structure is creped dry from the Yankee with a doctor blade. The squeegee has a bevel angle of about 25 degrees and is positioned relative to the Yankee to provide an impact angle of about 81 degrees. The Yankee is used at a temperature of about 275 ° F (135 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is wound into a roll (master roll) using a surface-driven reel drum having a peripheral velocity of about 757 feet per minute (230.73 m / min). Two mother-rolls of the fibrous structure are then converted into a sanitary tissue product by loading the fibrous structure roll into a unwinding support. The production speed is 400 feet / min (121.92 m / min). A stock reel of the fibrous structure is unwound and transported to the embossing support where the fibrous structure is filtered to form the embossing pattern in the fibrous structure, and then this is mixed with the fibrous structure of the other stock to make a multilayer toilet paper product (double layer). The multilayer sanitary tissue product is then transported over a slotted extruder through which surface chemical treatment can be applied. The multilayer sanitary tissue product is then transported to a winder where it is wound on a mandrel to form a spool. The multilayer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue type product rolls. The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above.
[0035] Example 4: Circulating air drying belt This example illustrates a non-limiting example for the preparation of a fibrous structure according to the present invention on a pilot scale Fourdrinier papermaking machine with the addition of trichome fibers providing an increase in strength.
[0036] The following example illustrates a non-limiting example for the preparation of a sanitary tissue product comprising a fibrous structure according to the present invention on a Fourdrinier fibrous structure manufacturing machine on a pilot scale. Individual trichomes are first prepared from Stachys byzantina efflorescence stems consisting of dried stems, leaves, and buds before flowering, by passing the dried plant material of Stachys byzantina through a cut-off organ. knife (Wiley shredder, manufactured by The CW Brabender Co. in New Jersey) equipped with an attrition screen with 1/4 "(0.635 cm) holes, at the exit of the Wiley shredder, we have a soft toy composite consisting of individual trichome fibers together with large pieces of leaf and stem material The individual trichome plush is then passed through a pneumatic classifier (Hosokawa Alpine 50ATP), the "accepted" or "fine" fraction from the classifier is highly enriched in individual trichomeous fibers whereas the "rejected" or "coarse" fraction is mainly large pieces of stems, and leaf with only a minor fraction of individual trichome fibers. A capsule holder speed of 9000 rpm, an air pressure resistance of 10 to 15 mbar (1 to 1.5 kPa), and a feed speed of about 10 g / min are used on the 50 ATP. The resulting individualized trichome material (fines) is mixed with a 10% aqueous dispersion of "Texcare 4060" to add about 10% by weight of "Texcare 4060" by dry weight weight of the individualized trichomes, followed by a Treating a "Texcare" trichome into water at a consistency of 3% using a conventional pulper. This slurry is passed through a feed conduit to another feed conduit containing a slurry of eucalyptus fibers.
[0037] Particular care must be taken during the treatment of trichomes. 60 pounds (27.27 kg) of trichome fiber is disintegrated in a 50 gallon (189 liter) disintegrator by adding water to half the amount required to make a 1% trichome fiber slurry. This is done to prevent trichome fibers from overflowing and floating on the surface of the water due to the lower density and hydrophobic nature of the trichome fiber. After mixing and stirring for a few minutes, the disintegrator is stopped and the remaining trichome fibers are pushed while water is added. After pH adjustment, it is disintegrated for 20 minutes, then poured into an independent box for release on the machine's arrival box. This makes it possible to place the trichome fibers in one or more layers, alone or mixed with other fibers, such as hardwood fibers and / or coniferous wood fibers. The aqueous slurry of eucalyptus fibers is prepared at about 3% by weight using a conventional pulper. This slurry is also passed through a feed conduit to the feed conduit containing the eucalyptus fiber slurry.
[0038] The 1% trichome fiber slurry is combined with the 3% eucalyptus fiber slurry in a proportion which gives about 13.3% trichome fiber and 86.7% eucalyptus fiber. The feed duct containing the combined trichome and eucalyptus fiber slurries is directed to the cloth layer of the arrival crate of a Fourdrinier machine.
[0039] Separately, an aqueous slurry of NSK fibers of about 3% by weight is made using a conventional pulper. In order to impart temporary moisture resistance to the finished fiber structure, a 1% dispersion of temporary wet reinforcement additive (eg Parez® marketed by Kemira) is prepared and added to the fiber feed conduit. NSK at a rate sufficient to deliver 0.3% temporary wet strength additive based on the dry weight of the NSK fibers. Absorption of the temporary wet reinforcing additive is improved by passing the treated slurry through an on-line mixer. - The trichome fiber and eucalyptus fiber slurry is diluted with white water at the inlet of a mixing pump to a consistency of about 0.15% based on the total weight of the slurry of eucalyptus and trichome fibers. Similarly, eucalyptus NSK fibers are diluted with white water at the inlet of a mixing pump to a consistency of about 0.15% based on the total weight of the fiber slurry. NSK. The eucalyptus / trichome fiber slurry and the NSK fiber slurry are both directed to a layered checkout box capable of holding the slurries as independent streams until they are deposited on a forming fabric on the Fourdrinier machine.
[0040] The fibrous structure manufacturing machine has a layered arrival crate with an upper chamber, a central chamber, and a lower chamber. The combined eucalyptus / trichome fiber slurry is pumped through the upper chamber of the arrival crate, the eucalyptus fiber slurry is pumped through the upper and lower chambers of the arrival crate and simultaneously the slurry NSK fiber is pumped through the central chamber of the arrival crate. They are delivered in a superimposed relationship on a Fourdrinier canvas so as to form a three-layered embryonic layer, of which about 83% consists of eucalyptus / trichome fibers and 17% consists of NSK fibers. Dehydration takes place through the Fourdrinier canvas and is assisted by a deflector and suction boxes. The Fourdrinier fabric is a 5-mass, satin-woven pattern having 87 monofilaments in the machine direction and 76 in the cross machine direction per 2.5 cm (per inch), respectively. The speed of the Fourdrinier canvas is approximately 750 feet per minute (228.6 meters per minute). The embryonic wet fibrous structure is transferred from the Fourdrinier web, at a fiber consistency of about 15% at the point of transfer, to a three-dimensional patterned air circulation drying belt, including semi-continuous corrugations and bearings. semi-continuous, similar to the first layer of the air circulation drying belt as shown in Figures 6A-6C. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The three-dimensional patterned air circulation drying belt is designed to provide a fibrous structure comprising a pattern of high density, semi-continuous joint regions dispersed through a region of continuous low density bearings. This three-dimensional pattern air-drying belt is formed by molding an impermeable resin surface on a fiber mesh support fabric similar to that shown in Figures 4B and 4C. The support fabric is a fine double-layer lattice of 98 x 52 filaments. The thickness of the resin footprint is about 11 mils (0.2794 millimeters) above the support fabric.
[0041] Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried with air blown through pre-dryers to a fiber consistency of about 65% by weight. . After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 22% polyvinyl alcohol, about 11% CREPETROL® A3025, and about 67% CREPETROL® R6390. CREPETROL® A3025 and CREPETROL® R6390 are marketed by Hercules Incorporated of Wilmington, Del. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fiber surface. The fiber consistency is increased to about 97% before the fibrous structure is creped dry from the Yankee with a doctor blade. The doctor blade has a bevel angle of about 25 ° and is positioned relative to the Yankee to provide an impact angle of about 81 degrees. The Yankee is operated at a temperature of about 350 ° F (177 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is rolled into a roll using a surface-driven reel drum having a peripheral speed of about 656 feet per minute (199.95 m / min). Two mother rolls of the fibrous structure are then converted to a sanitary tissue product by loading the fibrous structure roll into a unwinding support. The production speed is 400 ft / min (121.92 m / min) A stock reel of the fibrous structure is unwound and transported to the embossing support where the fibrous structure is filtered to form the embossing pattern in the fibrous structure and then this is mixed with the fibrous structure of the other mother-roll to make a multi-layer (double-layer) sanitary tissue product. The multilayer sanitary tissue product is then transported over a slotted extruder through which surface chemical treatment can be applied. The multilayer sanitary tissue product is then transported to a winder where it is wound on a mandrel to form a spool. The multilayer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue type product rolls. The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above. Example 5 Circulation Drying Belt The following example illustrates a non-limiting example for the preparation of a sanitary tissue product comprising a fibrous structure according to the present invention on a fibrous structured manufacturing machine (paper ) from Fourdrinier on a pilot scale. An aqueous slurry of eucalyptus pulp fibers (Fibria Brazilian bleached hardwood kraft pulp) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the fiber feed box. hardwood. The eucalyptus fiber slurry from the hardwood box is pumped through a feed line to a hardwood mix pump where the consistency of the slurry is reduced by about 3% by weight. fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and lower chambers of a three-chamber, multi-ply feed box of a Fourdrinier wet paper machine. In addition, an aqueous slurry of NSK paper pulp (Northern Softwood Kraft) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the wood fiber feed box. conifers. The NSK fiber slurry from the coniferous wood supply box is pumped through a feed pipe to be refined to a Canadian Standardized Freeness Index (CSF) of about 630. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% NSK slurry is then directed and distributed into the central chamber of a multi-ply, three-chambered box of a Fourdrinier wet paper machine. In order to impart temporary moisture resistance to the finished fiber structure, a 1% dispersion of temporary wet reinforcement additive (eg, Fennorez® 91 marketed by Kemira) is prepared and added to the feed conduit of the feed. NSK fibers at a rate sufficient to deliver 0.23% temporary wet strength additive based on the dry weight of the NSK fibers.
[0042] The absorption of the temporary wet reinforcing additive is improved by passing the treated slurry through an in-line mixer. The wet papermaking machine has a layered crate having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the top checkout and the lower checkout box. The NSK fiber slurry is directed to the central cashbox. The three layers of fibers are delivered simultaneously in superimposed relationship on the Fourdrinier fabric so as to form a three-layered embryonic fibrous structure (web), of which about 26% of the upper side is made of eucalyptus fibers, about 26% consists of eucalyptus fibers on the lower side and about 48% consists of NSK fibers in the center. The dehydration is carried out through the Fourdrinier canvas and is assisted by a baffle and suction cups table cloth. The Fourdrinier Canvas is an 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier Canvas is approximately 800 feet per minute (243.84 m / min) The weight per unit area of one layer for this condition was 11 , 3 pounds per 3000 feet in cane (18.419 g / m2). The thickness of a layer (95 gsi (14.72 g / cm 2)) was 10.65 mils (0.27051 mm). The embryonic wet fibrous structure is transferred from the Fourdrinier web at a consistency of about 18. at 22% at the transfer point, to a three dimensional pattern air circulation drying belt, as shown in Figures 6A-6C. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The three-dimensional pattern air-drying belt is designed to provide a fibrous structure, as shown in FIGS. 7A and 7B, comprising a pattern of high density joint regions dispersed across a region of continuous bearings. multi-elevation. The multi-lift continuous bushing region includes an intermediate density bushing region (density between the high density corrugations and the other low density bushing region) and a region of low density bushings farmed by the deflection lines created by the semicontinuous hinge layer oriented essentially towards the machine. This three-dimensional pattern air-flow drying belt is formed by molding a first layer of impermeable resin surface of semi-continuous corrugations onto a fiber mesh support fabric similar to that shown in the Figures. 4B and 4C, then molding a second layer of an impermeable resin surface of discrete corrugations. The support fabric is a fine double-layer lattice of 98 x 52 filaments. The thickness of the imprint of the first resin layer is about 6 mils. (0.154 mm) superior to the support fabric and the thickness of the second resin layer footprint is about 13 mil (0.3302 mm) greater than the supporting fabric. Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried by blowing air through pre-dryers to a fiber consistency of about 50-65%. in weight. After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 80% polyvinyl alcohol (PVA 88-44) and about 20% UNICREPE® 457T20. UNICREPE® 457T20 is marketed by GP Chemicals. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fibrous surface. The fiber consistency is increased to about 96-98% before the fibrous structure is creped dry from the Yankee with a doctor blade. The doctor blade has a bevel angle of about 25 ° and is positioned relative to the Yankee to provide an impact angle of about 81 °. The Yankee is used at a temperature of about 300 ° F (149 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is rolled into a roll (master roll). using a surface-driven wire feeder drum having a peripheral speed of about 655 feet per minute (199.64 m / min). Two mother rolls of the fibrous structure are then converted into a hygienic paper-like product by loading the fibrous structure roll into a unwinding support. The production speed is 400 feet / min (121.92 m / min). A stock reel of the fibrous structure is unwound and transported to the embossing station where the fibrous structure is filtered to form the embossing pattern in the fibrous structure via a 0.75 "(1.905 cm) nip roll of the pressure roll, then it is mixed with the fibrous structure of the other mother-roll to make a multi-layer (double-layer) sanitary tissue product, the multi-layer sanitary tissue product is then transported to a winder where it is wound on a mandrel. The multi-layer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue type product rolls The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above Example 6: Circulation air drying belt The following example illustrates a nonlimiting example. method for preparing a sanitary tissue product comprising a fibrous structure according to the present invention on a Fourdrinier fibrous structure (paper) manufacturing machine on a pilot scale. An aqueous slurry of eucalyptus pulp fibers (bleached hardwood kraft pulp Fibria Brazilian) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the fiber feed box. of hardwood. The eucalyptus fiber slurry from the hardwood box is pumped through a feed line to a hardwood mix pump where the consistency of the slurry is reduced by about 3% by weight. fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and lower chambers of a three-chamber, multi-layer, arrival box of a Fourdrinier wet paper machine. . In addition, an aqueous slurry of NSK paper pulp (Northern Softwood Kraft) is prepared at about 3% fiber by weight using a conventional pulper and then transferred to the wood fiber feed box. 25 conifers. The NSK fiber slurry from the coniferous wood supply box is pumped through a feed pipe to be refined to a Canadian Standardized Freeness Index (CSF) of about 630. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% NSK slurry is then directed and distributed into the central chamber of a multi-ply, three-chambered feed box of a Fourdrinier wet paper machine.
[0043] In order to impart temporary moisture resistance to the finished fiber structure, a 1% dispersion of temporary wet reinforcement additive (eg, Fennorez® 91 marketed by Kemira) is prepared and added to the feed conduit of the feed. NSK fibers at a rate sufficient to deliver 0.23% temporary wet strength additive based on the dry weight of the NSK fibers. The absorption of the temporary wet reinforcing additive is improved by passing the treated slurry through an in-line mixer. The wet papermaking machine has a layered crate having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the top checkout and the lower checkout box. The NSK fiber slurry is directed to the central cashbox. The three layers of fibers are delivered simultaneously in superimposed relationship on the Fourdrinier fabric so as to form a three-layered embryonic fibrous structure (web), of which about 26% of the upper side is made of eucalyptus fibers, about 26% consists of eucalyptus fibers on the lower side and about 48% consists of NSK fibers in the center. The dehydration is carried out through the Fourdrinier canvas and is assisted by a baffle and suction cups table cloth. The Fourdrinier Canvas is an 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier Canvas is about 800 feet per minute (243.84 m / min). The basis weight of one layer for this condition was 11.5 pounds per 3000 square feet (18.419 g / m2). The thickness of one layer (95 gsi (14.72 g / cm 2)) was 23.1 mils (0.58674 millimeters). The embryonic wet fibrous structure is transferred from the Fourdrinier web at a consistency of about 18-22% at the transfer point to a three dimensional patterned air circulation drying belt as shown in Figures 6A-6C. The speed of the three-dimensional pattern air-drying belt is the same as the speed of the Fourdrinier fabric. The three-dimensional patterned air circulation drying belt is designed to provide a fibrous structure, as shown in FIGS. 7A and 7B, comprising a pattern of high density joint regions dispersed across a region of multi continuous bearings. -elevation. The multi-lift continuous bearing region includes an intermediate density bearing region (density between the high density corrugations and the other low density bearing region) and a low density bearing region formed by the deflection lines created by the semicontinuous hinge layer oriented essentially towards the machine. This three-dimensional pattern air-flow drying belt is formed by molding a first layer of impermeable resin surface of semi-continuous corrugations onto a fiber mesh support fabric similar to that shown in the Figures. 4B and 4C, then molding a second layer of an impermeable resin surface of discrete corrugations. The support fabric is a fine double-layer lattice of 98 x 52 filaments. The thickness of the footprint of the first resin layer is about 6 mils (0.154 millimeters) greater than the support fabric and the thickness of the footprint of the second resin layer is about 13 mils (0.3302 millimeters) superior to the supporting fabric. Further dehydration of the fibrous structure is accomplished by vacuum assisted drainage until the fibrous structure has a fiber consistency of about 20% to 30%. While remaining in contact with the three-dimensional pattern air-drying belt, the fibrous structure is pre-dried by blowing air through pre-dryers to a fiber consistency of about 50-65%. in weight. After the dryers, the semi-dry fibrous structure is transferred to the Yankee and adheres to the surface of the Yankee with a vaporized creping adhesive. The creping adhesive is an aqueous dispersion with active ingredients consisting of about 80% polyvinyl alcohol (PVA 88-44) and about 20% UNICREPE® 457T20. UNICREPE® 457T20 is marketed by GP Chemicals. The creping adhesive is delivered to the Yankee surface at a rate of about 0.15% adhesive solids based on the dry weight of the fibrous surface. The fiber consistency is increased to about 96 to 98% before the fibrous structure is creped dry from the Yankee with a doctor blade. The doctor blade has a bevel angle of about 25 ° and is positioned relative to the Yankee to provide an impact angle of about 81 °. The Yankee is used at a temperature of about 300 ° F (149 ° C) and a speed of about 800 feet per minute (243.84 m / min). The fibrous structure is wound into a roll (master roll) using a surface-driven reel drum having a peripheral velocity of about 671 feet per minute (204.52 m / min). Two stock reels of the fibrous structure are then converted to a sanitary tissue product by loading the fibrous structure roll into a unwinding support. The production speed is 400 feet / min (121.92 rrilmin). A stock reel of the fibrous structure is unwound and transported to the embossing station where the fibrous structure is filtered to form the embossing pattern in the fibrous structure via a 0. 75 "(1.905 cm) nip roll of the pressure roll, then it is mixed with the fibrous structure of the other mother-roll to make a multi-layer (double-layer) sanitary tissue product, the multi-layer sanitary tissue product is then transported to a winder where it is wound on a mandrel. The multi-layer sanitary tissue product reel is then transported to a reel saw where the reel is cut into finished sanitary tissue type product rolls The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above Example 7: Circulating Air Drying Belt The following example illustrates a non-limiting example. imitative for the preparation of a sanitary tissue product, for example absorbent paper, comprising a fibrous structure according to the present invention on a Fourdrinier fibrous structure (paper) manufacturing machine on a pilot scale. A 3% by weight aqueous slurry of northern softwood kraft pulp (NSK) is prepared in a conventional disintegrator. The NSK slurry is gently refined and a 3% solution of a permanent water-resistant resin (eg, Kymene 5221 sold by Hercules Incorporated of Wilmington, Del.) Is added to the NSK supply line at 1% by weight of dry fibers. The adsorption of Kymene 5221 on NSK fibers is enhanced by an on-line mixer. A 1% solution of Carboxy Methyl Cellulose (CMC) (eg, FinnFix '700 sold by CP Kelco US Inc. of Atlanta, GA) is added after the on-line mixer at 0.35%. dry fiber weight to improve the dry strength of the fibrous substrate. The refined NSK fiber slurry is then directed to the NSK mixing pump where the consistency of the NSK slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% NSK slurry is then directed and distributed in the central and upper chamber of a multilayered headbox, at. three chambers of a Fourdrinier wet paper machine.
[0044] An aqueous slurry of 3% by weight of eucalyptus fibers is prepared in a conventional disintegrator. A 1% solution of antifoaming agent (eg, Wickit 1285, available from Hercules Incorporated of Wilmington, Del.) Is added to the eucalyptus feed line at a rate of 0.1% w / w. dry fiber and its adsorption is improved by an online mixer. The eucalyptus fiber slurry from the hardwood feed box is pumped through a feed pipe to an NSK mixing pump where the consistency of the slurry is reduced by about 3% by weight of fiber. about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and evenly distributed in the upper and middle chambers of a three-chamber, Fourdrinier wet paper-making machine. The eucalyptus fiber slurry from the hardwood lumber crate is pumped through a feed pipe to an Euc mixing pump. wherein the consistency of the slurry is reduced from about 3% by weight of fiber to about 0.15% by weight of fiber. The 0.15% eucalyptus slurry is then pumped and distributed into the lower chamber of a multi-ply, three-chambered box of a Fourdrinier wet paper machine. An aqueous slurry of 3% by weight of 40% eucalyptus fiber, 40% Northern Softwood Kraft (NSK) and 20% Southern Softwood Kraft (SSK) is made in a conventional pulper. . This mixture is called mixed fiber. The fiber slurry of the mixed fiber feed box is pumped through a supply line to an NSK mixing pump where the consistency of the slurry is reduced from about 3% by weight of fiber to about 0, 15% by weight of fiber. The 0.15% fiber mixture slurry is then pumped and evenly distributed in the upper and middle chambers of a three-chamber, multi-layer, arrival box of a Fourdrinier wet paper machine. . The wet papermaking machine has a layered crate having an upper chamber, a central chamber, and a lower chamber where the chambers feed directly on the forming wire (Fourdrinier canvas). The eucalyptus fiber slurry of 0.15% consistency is directed to the upper feed box and in equal amounts to the central and upper chambers. The NSK fiber slurry is directed to the central and bottom inlet cashbox. The mixed fiber slurry is directed to the central and bottom inlet cash chamber. The three layers of fibers are delivered simultaneously in superimposed relationship on the Fourdrinier fabric so as to form a three-layered embryonic fibrous structure (web), of which about 21% of the lower side consists of eucalyptus fibers, about 11% consists of eucalyptus fibers on the upper and central side, about 53% is made up of NSK fibers on the upper and central side, and about 15% consists of mixed fibers on the upper and central side. The dehydration is carried out through the Fourdrinier canvas and is assisted by a baffle and suction cups table cloth. The Fourdrinier canvas is a 84M (84 by 76 5A, Albany International) The speed of the Fourdrinier canvas is about 700 feet per minute (213.36 m / min) The web is then transferred to the transfer / printing fabric at drawings, with a pattern as shown in this application, in the transfer zone without precipitating a substantial densification of the web. The web is then transferred, at a second speed, V2, onto the transfer / printing fabric along a looped path in contacting relation with a transfer head disposed at the transfer zone, the second speed being about 5% to about 40% slower than the first speed. Since the speed of the web is faster than the transfer / printing fabric, wet shrinkage of the web occurs at the point of transfer. Thus, the narrowing of the wet web may be from about 3% to about 15%. Further dewatering is accomplished by vacuum assisted drainage until the web has a fiber consistency of from about 20% to about 30%. The patterned web is pre-dried by blown through air to a fiber consistency of about 65% by weight. The web then adheres to the surface of a Yankee machine with a vaporized creping adhesive comprising 0.1% aqueous polyvinyl alcohol (PVA) solution. The fiber consistency is increased to about 96% before dry creping the ply with a squeegee. The doctor blade has a bevel angle of approximately 45 degrees and is positioned relative to the Yankee to provide an impact angle of approximately 101 degrees. The dried web is wound at a fourth speed, V4, which is faster than the third speed, V3, of the drying cylinder. Two layers of the web may be formed into multilayered sanitary paper products by embossing and laminating together using a PVA adhesive. The multilayer sanitary tissue product of this example shows the properties shown in Table 1 above.
[0045] Test Procedures Unless otherwise specified, all tests described herein, including those described under the Definitions section and the following test methods, are performed on samples that have been conditioned in an air-conditioned room at a temperature of 23 ° C ± 1 ° C and a relative humidity of 50% ± 2% for a minimum of 2 hours before the test. The tested samples are "usable units". The term "usable units" as used herein refers to sheets, flat portions from a roll stock, pre-processed flat portions, and / or single layer or multilayer products. All tests are carried out in such a conditioned room. Do not test samples that have defects such as creases, tears, holes and the like. All instruments are calibrated according to the manufacturer's specifications. Surface Mass Test Method The basis weight of a fibrous structure and / or a sanitary tissue product is measured on stacks of twelve usable units using a high plateau analytical balance with a resolution of ± 0.001 g. The scale is protected from drafts and other disturbances by means of a windscreen. A precision cutting tool measuring 3,500 "± 0.0035" by 3,500 "± 0.0035" (8.89 cm ± 0.00889 cm by 8.89 cm ± 0.00889 cm) is used to prepare all samples. Using a precision cutting tool, cut the samples into squares.
[0046] Combine the cut squares to form a stack with a thickness of twelve samples. Measure the mass of the sample stack and record the result at plus or minus 0.001 g. The basis weight is calculated in lb / 3000 ft2 or g / m2 as follows: Density = (Mass of the cell) / [(Area of 1 Square in the cell) x (Number of squares in the cell)] For example, Weight per unit area (lb / 3000 ft2) = [[Mass of the battery (g) / 453.6 (g / lb)] / [12.25 (pot) / 144 (pot / pie) x 12]] x 3000 OR Mass (g / m2) = Weight stack (g) / [79.032 (cm2) / 10,000 (cm2 / m2) x 12] Indicate the result at 0.1 g / m2 or 0.1 lb / 3000 ft2 the closest. The dimensions of the sample may be varied or varied using a similar precision cutting member as mentioned above, so as to have at least 645.2 centimeters squared (100 inches at the cane) of sample area in the battery. Thickness Testing Method The thickness of a fibrous structure and / or a sanitary tissue product is measured using a ProGage micrometer (Thwing-Albert Instrument Company, West Berlin, NJ) with a foot diameter of 2.00 inch (5.08 cm) pressure (3.14 pot (20.258 cm 2) area) at a pressure of 95 g / in 2 (14.725 g / cm 2). Four (4) samples are prepared by cutting a usable unit so that each cut sample is at least 2.5 inches (6.35 cm) per side, avoiding obvious creases, folds and defects. An individual sample is placed on the anvil with the sample centered below the pressure foot. The foot is lowered to 0.03 in / sec (0.0762 cm / s) at an applied pressure of 95 g / in 2 (14.725 g / cm 2). The measurement is taken after a hold time of 3 s, and the foot is raised. The measurement is repeated similarly for the remaining 3 samples. The thickness is calculated as the average thickness of the four samples and is reported in mils (0.001 in.) To plus or minus 0.1 mil. Density Test Method The density of a fibrous structure and / or a sanitary tissue product is calculated as the ratio of the basis weight of a fibrous structure or a sanitary tissue product expressed in pounds / 3000 feet divided by the thickness (at 95 g / cm 2). po2 (14.725 g / cm2)) of the fibrous structure or toilet tissue product expressed in mils The final density value is calculated in pounds / ft3 and / or g / cm3, using the appropriate conversion factors Method for testing the compressibility of the cell and the elastic inflator The thickness of the cell (measured in mils, 0.001 inch (0.01025 cm)) is measured as a function of the confining pressure (g / po 2) using a Thwing-Albert Compression / Flexibility Tester (14 W. Collings Ave. , West Berlin, NJ) Vantage (model 1750-2005 or similar) or an equivalent instrument, equipped with a load cell of 24.5 N (2500 g) (the accuracy on the force is +/- 0.25 % when the measured value is between 10% and 100% of the capacity of the load cell, and 0.025% when the measured value is less than 10% of the capacity of the load cell), a pressure foot 1.128 inches (2.8665 cm) diameter steel (one inch square cross-sectional area (6.4516 cm2) which is aligned parallel to the steel anvil (2.5 inch diameter (6, 35 cm). The surfaces of the pressure foot and the anvil must be clean and free of dust, especially when performing the steel-on-steel test. Thwing Albert software (MAP) controls the movement and acquisition of instrument data. The instrument and software are configured to collect crosshead and force data at a speed of 50 dots / s. The crosshead speed (which moves the pressure foot) to test the samples is set to 0.20 inch / min (0.508 cm / min) (the steel-to-steel test speed is set to 0.05 inch / min (0.127 cm / min) Transverse position and force data are recorded between the load cell range of approximately 0.05 and 14.71 N (5 and 1500 grams) during compression. stop immediately after exceeding 1500 grams record the thickness at that pressure (called T.), and immediately change direction at the same speed as the compression run.The data is collected during this part of the test decompression ( also referred to as recovery) between approximately 1500 and 5 grams Since the foot area is one inch squared (6.4516 cm2), the force data recorded corresponds to a pressure in units of g / in2. MAP software is programmed to 15 selected crosshead positions (for both compression and recovery) at specific pressure points of 10, 25, 50, 75, 100, 125, 150, 200, 300, 400, 500, 600 , 750, 1000 and 1250 g / in 2 (1.55, 3.82, 7.75, 11.62, 15.5, 19.37, 23.25, 31, 46.5, 62, 77.5, 93, 116.25, 155, 193.75 g / cm2) (i.e., recording the traverse position of the next data point immediately collected after each pressure sensing point is exceeded) . In addition to these collected pick-up points, T. is also recorded, that is, the thickness at the maximum pressure applied during the test (approximately 1500 g / in 2 (232.5 g / cm 2)). Since the overall test system, including the load cell, is not perfectly rigid, a steel-to-steel test is performed (ie with nothing between the pressure foot and the anvil) at least twice for each test lot, so as to obtain an average set of steel-on-steel crosshead positions at each of the 31 gripping points previously described. These steel-to-steel crosshead position data are subtracted from the corresponding crosshead data at each entry point for each stacked sample tested, which gives the stack thickness (mils) at each point of pressure capture. during compression, the maximum pressure and the recovery portions of the test. Tile (input) = PT (enter) - Tackle (input) Where: input = pressure at the point of capture or compression, or at recovery, or at most Tile = Battery thickness (at the input pressure) PTpile = Position Transverse of the stack under test (at the gripping pressure) PTsteel = Transverse position of the steel-to-steel test (at the gripping pressure) A stack of a thickness of five (5) usable units is prepared for the test as follows. The minimum usable unit size is 2.5 inches by 2.5 inches (6.35 cm by 6.35 cm); however, a larger sheet size is preferable for the test, since it allows easier handling without touching the central region where the compression test is taking place. For typical perforated absorbent toilet paper, this involves removing five (5) sets of 3 usable connected units. In this case, the test is carried out on the usable unit of the medium and the 2 useable external units are used for handling during the removal of the roll and the stacking. For other product formats, it is recommended, when possible, to create a test sheet size (each one thick of a usable unit) that is large enough for the internal test region the stack created with a thickness of 5 usable units is never physically touched, elongated or contracted, but with dimensions not exceeding 14 inches by 6 inches (35.56 cm by 15.24 cm). The sheets (thickness of one usable unit each) of the same approximate dimensions, are placed one above the other, with their machine direction aligned in the same direction, their outer faces all facing the same direction and their edges being aligned +/- 3 mm from each other. The central part of the pile, where the compression test will take place, must never be physically touched, elongated and / or contracted (this includes never "smoothing" the surface with a hand or other device before the test) . The stack of sheets is placed on the anvil, positioning it so that the pressure foot will come into contact with the central region of the stack (for the first compression test) at a point not physically touched. leaving space for a subsequent compression test (second), also in the central region of the stack, but separated from Y4 inch (0.635 cm) or more of the first compression test, so that one and the Other tests are in unaffected and separated points in the central region of the pile. From both of these tests, a stack average crossing position at each input pressure (i.e., PTpile (capture)) is calculated for the compression, maximum pressure, and recovery portions. tests. Then, using the average steel-to-steel crosshead (ie, PT-steel (grab)) gripping points, the average stack thickness at each input (ie Tpile ( The compressibility of the stack is defined here as the absolute value of the linear slope of the stack thickness (mils) as a function of the log (10) of the confining pressure (grams / cm). po2), using the previously discussed compression pickup points (i.e. compression of 10 to 1250 g / in 2 (1.55 to 193.75 g / cm 2), in a smallest regression The units for the compressibility of the stack 15 are mils / (log (g / po 2)), and this is indicated at plus or minus 0.1 mil / (log (g / po 2)). is calculated from the weight of the stack per unit area and the sum of 8 thickness values Tpile (entered) from the peak pressure portion and the test recovery: ie at the entry pointsmaximum pressure (Tmax) and recovery to R1250, R1000, R750, R500, R300, R100 and R10 g / in2 (R193.75, R155, R116.25, R77.5, R46.5, R15.5, R1.55 g / cm2) (a prefix "R" indicates that these inputs come from the test recovery portion). The weight of the pile per unit area is measured from the same region of the pile contacted by the compression foot, after the compression test is completed, by cutting a cane 22.6 cm in diameter. (3.50 inch cane) (typically) with a precision die cutter, and weighing on a 3-station calibrated balance, plus or minus 0.001 gram. The weight of the precisely cut stack, together with the Tile data (input) at each required input pressure (each point being an average of the two compression / recovery tests previously discussed), are used in the following equation for calculate the elastic swelling, indicated in units of cm3 / g, at plus or minus 0.1 cm3 / g. Inflating SUM (Tile (T., R1250, R1000, R750, R500, R300, R100, R10)) * 0.00254 ant elastic M / A 30 Where: Tpile = Battery Thickness (at Tmax and Tmax input pressure) at the restoring pressures listed above), (mils) M = weight of the precisely cut pile, (grams) A = precisely cut pile area, (crn2) Plate stiffness test method As used herein, the "plate stiffness" test is a measure of the stiffness of a flat sample as it is deformed down into a hole below the sample. For the test, the sample is modeled as an infinite plate with a thickness "t" which is on a flat surface where it is centered on a hole with a radius "R". A central force "F" applied to the absorbent paper directly on the center of the hole deflects the absorbent paper down into the hole over a distance "w". For a linear elastic material, the deviation can be predicted by: 3F w = - 41r And, (1 - ') (3 + v) R2 where "E" is the effective linear elastic modulus, "v" is the Poisson's ratio , "R" is the radius of the hole, and "t" is the thickness of the absorbent paper, taken as the thickness in millimeters measured on a stack of 5 absorbent papers under a load of about 0.29 psi (1.99 kPa ). Taking the Poisson's ratio to a value of 0.1 (the solution is not very sensitive to this parameter, so the imprecision due to the adopted value is probably minor), the previous equation can be reformulated for "w To estimate the effective module based on the flexibility test results: 3R2 FE 43 Tv Test results are performed using an MTS Alliance RT / 1, Insight Renew or similar test machine (MTS Systems Corp., Eden Prairie, Minn.), With a load cell of 50 newtons, and a data acquisition rate of at least 25 force points per second. When a stack of five sheets of absorbent paper (created without any crease, pressing or deformation) of at least 2.5 inches by 2.5 inches (6.35 cm by 6.35 cm), but not more than 5 , 0 inches by 5.0 inches (12.7 cm by 12.7 cm), oriented in the same direction, is centered on a 15.75 mm radius hole on a support plate, a blunt probe of a radius of 3.15 mm descends at a speed of 20 mm / min. For a typical perforated rolled absorbent toilet paper, the sample preparation consists of removing five (5) usable connected units, and carefully forming a stack of five sheets, in the manner of an accordion, by folding only at perforation lines. When the end of the bottom drops to 1 mm below the plane of the support plate, the test is terminated. The maximum slope (using least squares regression) in grams of force / mm over any 0.5 mm range during the test is recorded (this maximum slope usually occurs at the end of the run). The load cell monitors the applied force and the position of the end of the probe relative to the plane of the support plate is also monitored. The maximum load is recorded, and "E" is estimated using the equation above.
[0047] The plate stiffness "S" per unit width can then be calculated as: er3 - = 12 and is expressed in units of Newtons * millimeters. The Testworks program uses the following formula to calculate stiffness (or it can be calculated manually from the raw data output): (F) [(3 r) R2 1 w) 1.-16n where "F / w" is the maximum slope (force divided by the deflection), "v" is the Poisson's ratio taken at a value of 0.1, and "R" is the ring radius. The same sample stack (as used previously) is then returned and retested in the same manner as previously described. This test is run three more times (with different sample stacks). Thus, eight S values are calculated from four stacks of sheets of the same sample. The numerical average of these eight S values is indicated as plate stiffness for the sample. Slip-slip test method (friction-slip) Background Friction is the stress that resists the relative movement of solid surfaces, layers of fluid and slidable material elements against each other. Of particular interest here, the "dry" friction resists the relative lateral movement of two solid surfaces in contact. Dry friction is subdivided into static friction between non-moving surfaces, and kinetic friction between moving surfaces. "Slip adhesion" as applied herein is the term used to describe the dynamic variation of kinetic friction.
[0048] Friction is not itself a fundamental force, but arises from the fundamental electromagnetic forces between the charged particles constituting the two surfaces in contact. Textured surfaces also involve mechanical interactions, as is the case when glass paper rubs against a fibrous substrate. The complexity of these interactions makes it impossible to calculate friction from the first principles and requires the use of empirical methods for the analysis and development of a theory. As such, a specific sled material and testing method has been identified, and has shown a correlation with human perception of surface sensation. The present slip-slip coefficient test method measures the interaction of a diamond file (grain 120-140) against a surface of a test sample, in this case a fibrous structure and or a sanitary tissue product, at a pressure of about 32 g / in 2 (4.96 g / cm 2) as illustrated in FIGS. 13-15. The friction measurements are highly dependent on the accuracy of the surface properties sled material and, since each sled has no "standard" reference, the variation in surface properties from one sled to another is taken into account by testing a test sample with several sleds, depending on the equipment and procedure described below. Equipment and configuration A Thwing-Albert friction / detachment test instrument (14 W.
[0049] Collings Ave., West Berlin, NJ) (model 225-1) or equivalent if no longer available, equipped with data acquisition software and a calibrated 2000 gram load cell that moves horizontally across the platform. Attached to the load cell is a small metal accessory (defined here as "load cell arm") which has a small hole near its end, so that a sled string can be attached (for this process, however, no string will be used). In this load cell arm hole, insert a screw-on cap (3/4 inch (1.905 cm) # 8-32) by partially screwing it into the opening, so that it is rigid (not loose) and is vertically oriented, perpendicular to the load cell arm. After turning on the instrument, set the test speed of the instrument to 2 inches / min (5.08 cm / min), the test time to 10 seconds and wait for at least 5 minutes for the instrument to preheat before to reset the load cell (without anything touching it) and to test. The load cell force data are collected at a rate of 52 points per second, indicated at plus or minus 0.1 grams of force. Press the "Return" button to move the cross member 201 to its starting position. A smooth-surfaced metal test platform 200, with dimensions of 5 inches by 4 inches by 3/4 inches of thickness (12.7 by 10.16 by 1.905 centimeters in thickness), is placed above the test instrument tray surface, on the left side of load cell 203, with one of its 4 inch by 3/4 inch sides facing the load cell 203, positioned 1.125 inch (2.8575 cm) from the far left end of the load cell arm 202, as shown in Figures 13 and 15. Sixteen test sleds 204 are required to perform this task. test (32 different sled surface faces). Each is manufactured using a wide-sided double sided diamond file 206 (25mm x 25mm, 120/140 grain, 1.2mm thick, part number McMaster-Carr 8142A14) with 2 flat metal washers 208 (approximately 11 / 16th of an inch (1.74625 cm) in outer diameter and approximately 11 / 32nd of an inch (0.8731 cm) in inner diameter). The combined weight of the diamond file 206 and the two washers 208 is 11.7 grams +/- 0.2 gram (choose different washers until the weight is in this range). Using a metal bonding adhesive (Loctite 430, or the like), adhere the 2 washers 208 to the c-shaped end 210 of the diamond file 206 (one on each side), aligned and positioned so that the opening 212 is large enough that the screw cap 214 fits easily, and to ensure that the total length of the sled 204 is approximately 3 inches (7.62 cm). Clean the 204 sled by dipping it, diamond face end 216 only, in an acetone bath, while gently brushing at the same time with a soft-bristled toothbrush, 3 to 6 times on each side of the diamond file 206 Remove acetone and dry by tapping each side with Kimwipe paper towel (do not rub the paper towel on the diamond surface, as this may loosen pieces of paper towels on the sled surface). minus 15 minutes before using sled 204 in a test. Label each side of the sled 204 (on the arm or washer, not on the diamond face) with a unique identifier (ie, the first sled is marked "la" on one side, and "lb" on his other side). When all 16 sleds 204 are created and marked, there are then 32 different diamond-faced surfaces available for testing, marked la and lb at 16a and 16b. These sleds 204 must be treated as fragile (especially diamond surfaces) and handled carefully; thus, they are stored in a pull box, or a similar protective container. Sample preparation If the test sample is an absorbent toilet paper, in the form of a perforated roll, then gently remove 8 sets of 2 connected roll sheets, touching only the corners (not the areas where the test sled will come into contact). If necessary, use scissors or other cutters. If the sample is in another form, cut 8 sets of samples approximately 8 inches (20.32 cm) in length, in a machine direction, approximately 4 inches (10.16 cm) long. ) in the transverse direction, of a thickness of one usable unit each. Make a note and / or a mark that differentiates between the front sides of each sample (for example, fabric side or canvas side, top or bottom, etc.). When the preparation of the sample is complete, there are 8 sheets prepared with an appropriate marking which differentiates one side of the other. These will be referred to hereafter as sheets 1 to 8, each with an upper side and a lower side. Performing the test Press the "Return" button to ensure that the cross member 201 is in its starting position.
[0050] Without touching the test area of the sample, place Sheet No. 1218 on the test platform 200, upper side facing up, aligning one of the cross-sided edges of the sheet (ie ie the edge which is parallel to the cross direction) along the edge of the platform 218 closest to the load cell 202 (+/- 1 mm) This first test (traction), out of a total of 32 , will be in the direction of the machine direction on the upper side of the sheet 218. Place a brass ballast bar or equivalent 220 (1 inch (2.54 cm) in diameter, 3.75 inches (9.525 cm) long) on the sheet 218, near its center, aligned perpendicular to the draw direction of the sled, to prevent the sheet 218 from moving during the test. Place a "la" test sled 204 on the bolted cap head 214 (ie, the sled washer opening 212 on the bolted cap head 214, and the sled side is downwardly facing it. ) so that the surface of the diamond file 206 is flat and parallel on the surface of the sheet 218 and the screwed cap 214 touches the inner edge of the washers 208.
[0051] Gently place a 20 gram (+ / 0.01 gram) brass cylindrical weight 222 over the sled 204, with its edge aligned and centered with respect to the trailing end of the sled. Begin sled movement and data acquisition by pressing the 'Test' button on the instrument. The configuration of the test is shown in Figure 15. The computer collects the force data (grams) and, after approximately 10 seconds of test time, this first pull among the 32 test pulls of the overall test is completed. test pattern has been correctly configured, the face of the diamond file 206 (25 mm square by 25 mm) remains in contact with the sheet 218 during the entire test time of 10 seconds (i.e. does not exceed the edge of the sheet 218 or the test platform 200). Similarly, if at any time during the test, sheet 218 moves, the test is invalid, and must be restarted on another unaffected part of sheet 218, using a brass ballast bar or equivalent 220 heavier to keep the sheet 218 down. If the sheet 218 is tearing or tearing, repeat the test on another unaffected part of the sheet 218 (or create a new sheet 218 from the sample). If it pulls again, replace the sled 204 with a different sled (giving it the same sled name as the one it replaced). These instructions apply to all 32 test drives. For the second of the 32 test pulls (also a machine direction pull, but in the opposite direction on the sheet), first remove the 20 gram weight 222, the sled 204, and the brass ballast bar or 220 equivalent of the sheet 218. Press the "Return" button on the instrument to bring the cross 201 to its starting position. Rotate the sheet 218 by 180 ° (with the upper side still facing upwards), and return the ballast brass bar or equivalent 220 on the sheet 218 (in the same position as described above). Place the test sled "lb" 204 on the bolted cap head 214 (i.e., the sled washer opening 212 on the bolted cap head 214, and the sled side lb is facing the bottom) and the weight of 20 grams 222 on the sled 204, in the same manner as previously described. Press the "Test" button to collect the data for the second test pull. The third test pull will be in the direction of the cross direction. After removing the sled 204, the weights 220, 222, and returning the cross member 201, the sheet 218 is rotated 90 ° from its previous position (with the upper side still facing upwards), and positioned so that its edge in the machine direction is aligned with the edge of the test platform 200 (+/- 1 mm). Position the sheet 218 so that the sled 204 does not touch any perforations, if any, or touch the area where the brass ballast bar or equivalent 220 has stopped in previous test drives. Place the ballast brass bar or equivalent 220 on the sheet 218 near its center, aligned perpendicular to the sled pulling direction m. Place the test sled "2a" 204 on the bolted head cap 214 (i.e., the sled washer opening 212 on the bolted head cap 214, and the sled side 2a is facing the bottom) and the weight of 20 grams 222 on the sled 204, in the same manner as previously described. Press the "Test" button to collect data for the third test pull. The fourth test pull will also be in the cross direction, but in the opposite direction and on the opposite half-section of the sheet 218. After removing the sled 204, the weights 220, 222, and returning the cross member 201, the sheet 218 is rotated 180 ° from its previous position (with the upper side still facing upwards), and positioned so that its edge in the machine direction is again aligned with the edge of the test platform 200 (+/- 1 mm) Position the sheet 218 so that the sled 204 does not touch any perforation, if any, or touch the area where the ballast brass bar or equivalent 220 has stopped in the tractions of previous test. Place the ballast brass bar or equivalent 220 on the sheet 218 near its center, aligned perpendicular to the sled pulling direction m. Place test sling "21" 204 on bolted head cap 214 (i.e., sled washer opening 212 on bolted head cap 214, and sled side 2b is turned down) and the weight of 20 grams 222 on the sledge 204, in the same manner as described above. Press the "Test" button to collect the data for the fourth test pull. After the fourth test pull is complete, remove sled 204, weights 220, 222 and return crossbar 201 to the starting position. Sheet No. 1218 is discarded.
[0052] The pulls of test 5 to 8 are executed in the same manner as 1 to 4, except that sheet No. 2118 has its lower side now facing upwards, and that the sleds 3a, 3b, 4a and 4b are used.
[0053] Test tractions 9 to 12 are executed in the same manner as 1 to 4, except that sheet 3 has its upper side facing upwards, and sleds 5a, 5b, 6a and 6b are used. The test tractions 13 to 16 are executed in the same manner as 1 to 4, except that the sheet No. 4 218 has its bottom side facing upwards, and the sleds 7a, 7b, 8a and 8b are used. The test tractions 17 to 20 are executed in the same manner as 1 to 4, except that the sheet No. 218 has its upper side facing upwards, and the sleds 9a, 9b, 10a and 10b are used. The test tracks 21 to 24 are executed in the same manner as 1 to 4, except that the sheet No. 6 218 has its bottom side facing upwards, and the sleds 11a, 11b, 12a and 12b are used. The test tracks 25 to 28 are executed in the same manner as 1 to 4, except that the sheet No. 7 218 has its upper side facing upwards, and the sleds 13a, 13b, 14a and 14b are used. The test tracks 29 to 32 are executed in the same manner as 1 to 4, except that the sheet No. 8 218 has its bottom side facing upwards, and that the sleds 15a, 15b, 16a and 16b are used. Calculations and Results The collected force data (grams) are used to calculate the slip stick coefficient for each of the 32 test pulls, and subsequently the slip stick coefficient of the overall mean friction. for the sample that is tested. In order to calculate the slip stick coefficient for each test pull, the following calculations are made. First, the standard deviation is calculated for the force data centered on the 131st data point (which is 2.5 seconds after the start of the test) + 1- 26 data points (i.e. 53 data points that span the range from 2.0 to 3.0 seconds). This standard deviation calculation is repeated for each subsequent data point, and stopped after the 493th point (approximately 9.5 s). The numerical average of these 363 standard deviation values is then divided by the sled weight (31.7 g) and multiplied by 10,000 to generate the slip stick coefficient of 10,000 for each pull. test. This calculation is repeated for all 32 test drives. The numerical average of these 32 slip stick coefficient values of the 10,000 friction is the indicated value of the slip stick coefficient (a-slip-slip) of 10,000 for the sample. For the sake of simplicity, it is simply referred to as slip-stick coefficient (friction-slip), or more simply adhesion-slip, without unit (dimensionless), and is indicated at plus or minus 1.0. Aberrant values and noise It is not unusual, with this method described, to observe that about one of the 32 test tractions has force data with a harmonic wave of vibrations superimposed on it. For whatever reason, the pulled sled periodically enters a relatively high frequency oscillating "shake" mode, which can be seen in the force versus time graph. It has been found that the sine wave noise has a frequency of about 10 s-1 and an amplitude in the force range of 0.03 to 0.05 N (3 to 5 grams). This adds a systematic discrepancy to the actual slip-slip result for this test; thus, it is appropriate that this test pull be treated as an aberrant result, that the data be eliminated and replaced by a new test of the same scenario (for example, upper side in the cross direction) and same sled number (eg , 3a). To obtain an estimate of the overall measurement noise, "blanks" were run on the test instrument without any contact of the load cell (i.e., no sled). The average force obtained by these tests is zero gram, but the slip stick coefficient of the calculated friction was 66. Thus, it has been hypothesized that, for this instrument measuring system, this value represents this absolute lower limit for the coefficient slip stick (adhesion-slip) friction.
[0054] The dimensions and values described here should not be understood as strictly limited to the exact numerical values quoted. Instead, unless otherwise indicated, each such dimension means both the quoted value and the functionally equivalent range surrounding that value. For example, a dimension described as "40 mm" means "about 40 mm" The citation of any document is not an admission that it is a prior art compared to any invention described or claimed herein or that alone, or in any combination with any other reference or reference, it teaches, proposes or describes any such invention. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in any other document, the meaning or definition attributed to that term in this document document will have to prevail. While particular embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various other variations and modifications may be made without departing from the scope of the invention. It is intended, therefore, to cover in the appended claims all such variations and modifications which belong to the scope of the present invention.

权利要求:
Claims (12)
[0001]
REVENDICATIONS1. A sanitary tissue product characterized in that it comprises a plurality of paper pulp fibers, wherein the sanitary tissue product has a slip stick coefficient (friction slip) of less than 625 (Coefficient of friction) 10000) as measured by the slip stick test method (adhesion-slip) and compressibility greater than 36 mils / (log (g / in)) as measured by the method of compressibility test of the stack.
[0002]
A sanitary tissue product as claimed in claim 1, characterized in that the pulp fibers comprise wood pulp fibers.
[0003]
A sanitary tissue product according to claim 1 characterized in that the pulp fibers comprise fibers which are not wood pulp.
[0004]
A sanitary tissue product according to any one of the preceding claims characterized in that the sanitary tissue product comprises an embossed fibrous structure layer.
[0005]
A sanitary tissue product as claimed in any one of the preceding claims characterized in that the sanitary tissue product comprises a three dimensional patterned fibrous structure layer.
[0006]
A sanitary tissue product as claimed in claim 5, characterized in that the three-dimensional patterned fibrous structure layer comprises a fibrous structure layer dried by air circulation.
[0007]
A sanitary tissue product according to claim 6, characterized in that the air-dried fibrous structure layer is a layer of fibrous structure dried by creped air circulation.
[0008]
A sanitary tissue product as claimed in claim 6, characterized in that the air-dried fibrous structure layer is a layer of fibrous structure dried by uncreped air circulation.
[0009]
9. A sanitary tissue product as claimed in claim 5, characterized in that the three-dimensional patterned fibrous structure layer comprises a fabric-crimped fibrous structure layer.
[0010]
A sanitary tissue product according to claim 5, characterized in that the three-dimensional patterned fibrous structure layer comprises a belt-crimped fibrous structure layer.
[0011]
A sanitary tissue product as claimed in any one of the preceding claims characterized in that the sanitary tissue product comprises a conventional fibrous structure layer in a wet press. 10
[0012]
A toilet tissue product as claimed in any one of the preceding claims characterized in that the sanitary tissue product comprises a fibrous structure layer not impregnated with lotion.

类似技术:

---

公开号 | 公开日 | 专利标题

---

FR3015214A1|2015-06-26|

---

FR3015213A1|2015-06-26|

---

FR3015212A1|2015-06-26|

---

FR3015215A1|2015-06-26|

---

FR3015531A1|2015-06-26|

---

US10240296B2|2019-03-26|Sanitary tissue products

---

FR2974494A1|2012-11-02|HYGIENIC PAPER PRODUCTS AND METHODS OF PRODUCING THE SAME

---

FR2978972A1|2013-02-15|FIBROUS STRUCTURES

---

FR2978971A1|2013-02-15|FIBROUS STRUCTURES

同族专利:

---

公开号 | 公开日

---

CA2932868C|2021-06-08|

---

GB201610635D0|2016-08-03|

---

US10151065B2|2018-12-11|

---

GB2535412A|2016-08-17|

---

MX2016008140A|2016-09-16|

---

US20150176216A1|2015-06-25|

---

US9404222B2|2016-08-02|

---

DE112014005895T5|2016-09-08|

---

US20190071823A1|2019-03-07|

---

US20170254024A1|2017-09-07|

---

US9896806B2|2018-02-20|

---

US20160319489A1|2016-11-03|

---

WO2015095432A1|2015-06-25|

---

US11162225B2|2021-11-02|

---

US10648136B2|2020-05-12|

---

CA2932868A1|2015-06-25|

---

US9683331B2|2017-06-20|

---

US20160355989A1|2016-12-08|

---

US20150176217A1|2015-06-25|

---

US20200270817A1|2020-08-27|

---

US9435080B2|2016-09-06|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

US9683331B2|2013-12-19|2017-06-20|The Procter & Gamble Company|Sanitary tissue products|

---

US10351997B2|2013-12-19|2019-07-16|The Procter & Gamble Company|Sanitary tissue products|US3432936A|1967-05-31|1969-03-18|Scott Paper Co|Transpiration drying and embossing of wet paper webs|

---

US3994771A|1975-05-30|1976-11-30|The Procter & Gamble Company|Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof|

---

US4300981A|1979-11-13|1981-11-17|The Procter & Gamble Company|Layered paper having a soft and smooth velutinous surface, and method of making such paper|

---

US4637859A|1983-08-23|1987-01-20|The Procter & Gamble Company|Tissue paper|

---

US4529480A|1983-08-23|1985-07-16|The Procter & Gamble Company|Tissue paper|

---

US5549790A|1994-06-29|1996-08-27|The Procter & Gamble Company|Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same|

---

US6436234B1|1994-09-21|2002-08-20|Kimberly-Clark Worldwide, Inc.|Wet-resilient webs and disposable articles made therewith|

---

US5690788A|1994-10-11|1997-11-25|James River Corporation Of Virginia|Biaxially undulatory tissue and creping process using undulatory blade|

---

DE69623477T2|1995-06-28|2003-06-05|Procter & Gamble|CREPED TISSUE PAPER THAT HAS A UNIQUE COMBINATION OF PHYSICAL ATTRIBUTES|

---

FI102623B1|1995-10-04|1999-01-15|Valmet Corp|Procedure and apparatus in a paper machine|

---

US6119362A|1996-06-19|2000-09-19|Valmet Corporation|Arrangements for impingement drying and/or through-drying of a paper or material web|

---

US5968590A|1996-09-20|1999-10-19|Valmet Corporation|Method for drying a surface-treated paper web in an after-dryer of a paper machine and after-dryer of a paper machine|

---

US6001421A|1996-12-03|1999-12-14|Valmet Corporation|Method for drying paper and a dry end of a paper machine|

---

US5851353A|1997-04-14|1998-12-22|Kimberly-Clark Worldwide, Inc.|Method for wet web molding and drying|

---

US6162327A|1999-09-17|2000-12-19|The Procter & Gamble Company|Multifunctional tissue paper product|

---

US7118796B2|1999-11-01|2006-10-10|Fort James Corporation|Multi-ply absorbent paper product having impressed pattern|

---

US6432267B1|1999-12-16|2002-08-13|Georgia-Pacific Corporation|Wet crepe, impingement-air dry process for making absorbent sheet|

---

NZ508817A|2000-12-12|2002-10-25|Humatro Corp|Flexible structure comprising starch filaments|

---

USD464203S1|2001-05-11|2002-10-15|The Procter & Gamble Company|Paper product|

---

US7494563B2|2002-10-07|2009-02-24|Georgia-Pacific Consumer Products Lp|Fabric creped absorbent sheet with variable local basis weight|

---

US20040221975A1|2003-05-05|2004-11-11|The Procter & Gamble Company|Cationic silicone polymer-containing fibrous structures|

---

AU2005215627A1|2004-02-17|2005-09-01|The Procter & Gamble Company|Deep-nested embossed paper products|

---

US20060088696A1|2004-10-25|2006-04-27|The Procter & Gamble Company|Reinforced fibrous structures|

---

US20060086472A1|2004-10-27|2006-04-27|Kimberly-Clark Worldwide, Inc.|Soft durable paper product|

---

US7419569B2|2004-11-02|2008-09-02|Kimberly-Clark Worldwide, Inc.|Paper manufacturing process|

---

US20070137814A1|2005-12-15|2007-06-21|Kimberly-Clark Worldwide, Inc.|Tissue sheet molded with elevated elements and methods of making the same|

---

US7744981B2|2006-03-06|2010-06-29|The Procter & Gamble Company|Embossed multi-ply fibrous structure product|

---

US7744723B2|2006-05-03|2010-06-29|The Procter & Gamble Company|Fibrous structure product with high softness|

---

US8152959B2|2006-05-25|2012-04-10|The Procter & Gamble Company|Embossed multi-ply fibrous structure product|

---

US7799411B2|2006-10-31|2010-09-21|The Procter & Gamble Company|Absorbent paper product having non-embossed surface features|

---

US20090117331A1|2007-11-05|2009-05-07|Joshua Thomas Fung|Textured Multi-Ply Sanitary Paper Product Having Optimized Emboss Patterns|

---

US8216427B2|2008-09-17|2012-07-10|Albany International Corp.|Structuring belt, press section and tissue papermaking machine for manufacturing a high bulk creped tissue paper web and method therefor|

---

WO2009067079A1|2007-11-20|2009-05-28|Metso Paper Karlstad Ab|Structuring belt, press section and tissue papermaking machine for manufacturing a high bulk creped tissue paper web and method therefor|

---

US20090220741A1|2008-02-29|2009-09-03|John Allen Manifold|Embossed fibrous structures|

---

US20090220769A1|2008-02-29|2009-09-03|John Allen Manifold|Fibrous structures|

---

US7704601B2|2008-02-29|2010-04-27|The Procter & Gamble Company|Fibrous structures|

---

US7960020B2|2008-02-29|2011-06-14|The Procter & Gamble Company|Embossed fibrous structures|

---

US8025966B2|2008-02-29|2011-09-27|The Procter & Gamble Company|Fibrous structures|

---

US20100040825A1|2008-08-18|2010-02-18|John Allen Manifold|Fibrous structures and methods for making same|

---

US7939138B2|2009-06-01|2011-05-10|Polymer Ventures, Inc.|Grease resistant coatings, articles and methods|

---

US8034463B2|2009-07-30|2011-10-11|The Procter & Gamble Company|Fibrous structures|

---

US8334049B2|2010-02-04|2012-12-18|The Procter & Gamble Company|Fibrous structures|

---

US20110189451A1|2010-02-04|2011-08-04|John Allen Manifold|Fibrous structures|

---

US8211271B2|2010-08-19|2012-07-03|The Procter & Gamble Company|Paper product having unique physical properties|

---

US8163130B2|2010-08-19|2012-04-24|The Proctor & Gamble Company|Paper product having unique physical properties|

---

WO2012047992A1|2010-10-07|2012-04-12|The Procter & Gamble Company|Sanitary tissue products and methods for making same|

---

US8257553B2|2010-12-23|2012-09-04|Kimberly-Clark Worldwide, Inc.|Dispersible wet wipes constructed with a plurality of layers having different densities and methods of manufacturing|

---

FR2978972A1|2011-08-09|2013-02-15|Procter & Gamble|FIBROUS STRUCTURES|

---

WO2013082240A1|2011-12-02|2013-06-06|The Procter & Gamble Company|Fibrous structures and methods for making same|

---

FR2985273B1|2012-01-04|2021-09-24|Procter & Gamble|FIBROUS STRUCTURES CONTAINING ACTIVE INGREDIENTS AND HAVING MULTIPLE REGIONS|

---

WO2013126531A1|2012-02-22|2013-08-29|The Procter & Gamble Company|Embossed fibrous structures and methods for making same|

---

US8574400B1|2012-05-25|2013-11-05|Kimberly-Clark Worldwide, Inc.|Tissue comprising macroalgae|

---

US9011641B2|2012-06-01|2015-04-21|The Procter & Gamble Company|Fibrous structures and methods for making same|

---

US8764940B2|2012-06-08|2014-07-01|The Procter & Gamble Company|Embossed fibrous structures|

---

US8834677B2|2013-01-31|2014-09-16|Kimberly-Clark Worldwide, Inc.|Tissue having high improved cross-direction stretch|

---

US9206555B2|2013-01-31|2015-12-08|Kimberly-Clark Worldwide, Inc.|Tissue having high strength and low modulus|

---

GB2536382A|2013-12-19|2016-09-14|Procter & Gamble|Sanitary tissue products|

---

DE112014005955T5|2013-12-19|2016-09-22|The Procter & Gamble Company|Sanitary paper products|

---

MX2016008140A|2013-12-19|2016-09-16|Procter & Gamble|Sanitary tissue products.|

---

GB2535414A|2013-12-19|2016-08-17|Procter & Gamble|Sanitary tissue products with superior machine direction elongation and foreshortening properties and methods for making same|

---

DE112014005959T5|2013-12-19|2016-09-22|The Procter & Gamble Company|Sanitary tissue products and process for their preparation|

---

DE112014005936T5|2013-12-19|2016-09-29|The Procter & Gamble Company|Free tissue sanitary paper products and process for making same|

---

CA2875801A1|2013-12-20|2015-06-20|Lynne Cheryl Hannen|Sanitary tissue products comprising a surface pattern|

---

US9469942B2|2014-01-30|2016-10-18|The Procter & Gamble Company|Absorbent sanitary paper products|

---

US9051693B1|2014-01-30|2015-06-09|The Procter & Gamble Company|Process for manufacturing absorbent sanitary paper products|

---

US9464387B2|2014-01-30|2016-10-11|The Procter & Gamble Company|Absorbent sanitary paper product|

---

EP3177296B1|2014-08-04|2019-12-18|Auburn University|Enantiomers of the 1',6'-isomer of neplanocin a|

---

US20170009401A1|2015-07-10|2017-01-12|The Procter & Gamble Company|Fibrous Structures and Methods for Making Same|

---

EP3325715A1|2015-07-24|2018-05-30|The Procter and Gamble Company|Sanitary tissue products|

---

WO2017189665A1|2016-04-26|2017-11-02|The Procter & Gamble Company|Sanitary tissue products|

---

US11219100B2|2018-03-20|2022-01-04|Ngk Insulators, Ltd.|Fluid heating component, fluid heating component complex, and manufacturing method of fluid heating component|US8871059B2|2012-02-16|2014-10-28|International Paper Company|Methods and apparatus for forming fluff pulp sheets|

---

US9416496B2|2013-10-16|2016-08-16|Georgia-Pacific Consumer Products Lp|Method for reducing the bulk and increasing the density of a tissue product|

---

GB2536382A|2013-12-19|2016-09-14|Procter & Gamble|Sanitary tissue products|

---

DE112014005959T5|2013-12-19|2016-09-22|The Procter & Gamble Company|Sanitary tissue products and process for their preparation|

---

EP3325715A1|2015-07-24|2018-05-30|The Procter and Gamble Company|Sanitary tissue products|

---

WO2017106270A1|2015-12-18|2017-06-22|The Procter & Gamble Company|Methods for liberating trichome fibers from portions of a host plant|

---

WO2017106299A2|2015-12-18|2017-06-22|The Procter & Gamble Company|Flushable fibrous structures|

---

WO2017205229A1|2016-05-23|2017-11-30|The Procter & Gamble Company|Process for individualizing trichomes|

---

CA3036897C|2016-10-25|2021-11-16|The Procter & Gamble Company|Fibrous structures|

---

WO2018081190A1|2016-10-25|2018-05-03|The Procter & Gamble Company|Fibrous structures|

---

JP6576972B2|2017-03-31|2019-09-18|大王製紙株式会社|Film packaging tissue|

---

US11180888B2|2018-06-29|2021-11-23|The Procter & Gamble Company|Fibrous structures comprising trichome compositions and methods for obtaining same|

---

US20210140116A1|2019-11-08|2021-05-13|The Procter & Gamble Company|Discrete cells forming distinct pillow regions|

法律状态:
2015-11-24| PLFP| Fee payment|Year of fee payment: 2 |

---

2016-11-17| PLFP| Fee payment|Year of fee payment: 3 |

---

2018-09-28| ST| Notification of lapse|Effective date: 20180831 |

优先权:

---

申请号 | 申请日 | 专利标题

---

US201361918404P| true| 2013-12-19|2013-12-19|

---