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    • 专利摘要:
    absorbent toiletries with protective tabs and strips. an absorbent toiletries article, such as a sanitary pad or incontinence pad, is described having a longitudinal centerline and a transverse centerline, and including a pair of opposing first and second flaps extending along the longitudinal sides of the article. . the article further includes first and second protective strips joined to the sides of the article such that when the flaps are folded under the article and around the wearer's underwear, the first and second protective strips extend laterally away from the article and the edges of the wearer's underwear to provide additional protection against leakage from bodily fluids deposited on the absorbent article of personal hygiene.
    公开号:BR112015027468B1
    申请号:R112015027468-4
    申请日:2014-05-12
    公开日:2022-01-04
    发明作者:SeongDae Roh；HyungWoo Park；HyongBom Kim；SeoYeon Son
    申请人:Kimberly-Clark Worldwide, Inc；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [0001] The present invention is generally directed to absorbent articles of personal hygiene. More particularly, it relates to absorbent toiletries provided with flaps and protective strips placed on the sides of the articles, which work in conjunction with the flaps to increase protection against leakage of bodily fluids onto clothing or other articles of clothing. HISTORIC
    [0002] Absorbent toiletries such as sanitary pads, panty liners, and incontinence pads generally utilize a pair of tabs, used to help secure the article in place on the wearer's underwear. Generally, the flaps are folded on the outside around the wearer's underwear and either attach to the outside of the underwear or are secured to each other through adhesive, mechanical fasteners or other fastening means. Once attached to underwear, the flaps help reduce the likelihood that the article will shift out of position. Examples of such folding flap fasteners are shown and described in US Patent Nos. US4589876 Van Tilberg; EP051190B1 Pigneul; US5401268 Rodier; and EP1208823A1 Hohmann. In addition to securing the article to the wearer's panties, the flaps are also designed to assist in preventing lateral leakage of bodily exudates received by the article. Unfortunately, it has been determined that these two functions may contradict each other.
    [0003] An advantage of the tabs is the feeling of security they provide to the user of the product, that the product will be in its place. As a result, users often over-tighten tabs. This, in turn, tends to pull the flaps downward, which is counterproductive to leak protection, as it distorts the flat or, preferably, upward-curving nature of the product to a point where the side edges begin to curve downwards, which facilitates the flow of body fluids that have been deposited on the top sheet or the layer in contact with the body of the product.
    [0004] On the other hand, if tab tension is reduced when the tabs are not wrapped so tightly over the genital region of the underwear, leakage protection will increase, but at the expense of the sense of security the wearer obtains from a procedure. tighter wrapping. One possible solution is to increase the size of the tabs. While this alternative can increase leakage protection, it can also make the product more uncomfortable to use. Yet another solution is to increase the overall dimensions of the base product, making it longer and/or wider. This can make the product more uncomfortable to use.
    [0005] There is, therefore, a need for an improved product design that results in a product that allows the user to wrap the flaps around underwear of the most varied sizes, to the desired degree, to provide assurance that the product will remain in place during use and will not shift during periods of increased activity. At the same time, there is also a need for a product that will still provide the necessary body contact surface area that would normally be provided at the side edges of the product, despite the flaps being joined so as to cause a downward force on the sides. of product. SUMMARY OF THE INVENTION
    [0006] The present invention addresses the problems experienced with prior art flap designs by providing an absorbent toiletries that includes flaps on both sides of the product supplemented with protective strips of material that are separated from the flaps, so that when the flaps are folded down, there is still material along the sides of the product that can facilitate good fit and reduce leakage from body exudates deposited on and into the product.
    [0007] In one embodiment, the absorbent toiletry article comprises an elongate shape defined by first and second side ends, opposite front and rear ends. The article defines a longitudinal axis, a transverse axis and a vertical axis perpendicular to the longitudinal axis and transverse axis. The article has a liquid pervious topsheet defining a top surface and a bottom surface, together with a liquid impervious backsheet and an absorbent core positioned between the liquid pervious topsheet and the liquid impervious backsheet. A first flap extends from the first side and has a proximal flap edge and a flap distal edge. Similarly, the article includes a second flap extending from the second side and having a proximal edge and a flap at the distal edge of the edge. To allow the article to be secured to the wearer's underwear, a fastener is positioned over at least one of the first and second flaps. The first flap and the second flap are each, respectively, joined to the first side and the second side of the article; the first flap has a first fold line and the second flap has a second fold line. The first flap and the second flap are adapted in use to be folded down along respective first and second fold lines with respect to the vertical axis and thus towards the back sheet.
    [0008] To protect against side leakage, the article further includes a first guard strip and a second guard strip each defining a proximal edge and a distal edge and a width therebetween. The first and second guard strips each define a leading edge part and a trailing edge part with an intermediate part disposed between the leading edge part and the trailing edge part. The leading edge part is separated from the middle part by a leading transition part and the trailing edge part is separated from the middle part by a trailing transition part. The first guard strip is located adjacent the first side of the article and the second guard strip is located adjacent the second side of the article such that at least a portion of the first guard strip, including at least a part of the distal edge extends beyond the first fold line and at least a portion of the second guard strip including at least a portion of the distal edge extends beyond the second fold line with the first and second fold lines being located below of the respective protection bands first and second in relation to the vertical axis. The mid-parts of the first and second guard strips each have a distal edge, wherein at least a part of the far edge is linear with the front transition part and the rear transition parts each having a width that is smaller than the width of the leading edge part, the middle part and the trailing edge part.
    [0009] If desired, the absorbent toiletry article may have at least a portion of the leading edge and portion of the trailing edge of the first and second guard strips being non-linear. For example, they can be convex, as seen in relation to the proximal edges of guardrails, but they can also have other non-linear models or combinations of linear and non-linear designs.
    [0010] To increase the rigidity of the guardrails, the first and second guardrails may be embossed or employ other means of reinforcement to increase the peak load rigidity of the bands.
    [0011] Typically, the first and second protective strips will each be joined to the upper surface of the top sheet, but the strips may also be attached to other layers or proximal edges of the strips may be incorporated between the layers to secure them. to the article. In other situations, the protective strips may be formed in whole or in part from other components of the absorbent article.
    [0012] In order to maintain the comfort of the article, the distal edges of the front edge part and the rear edge part of the first and second protective strips do not extend beyond the respective first side and the second side of the article. In doing so, the overall presence of the article is not increased by these parts, thus maintaining the comfort and size of the article. However, in some applications, it may be desirable for such portions of the article to extend beyond the periphery of the article formed by layers or other components of the article.
    [0013] To further maintain the comfort of the article, in certain embodiments, it is desirable that the width of the middle part of the first and second protective strip is between ten percent of the width of at least one part of the leading edge and the part of the back edge of the strip. In another embodiment, the leading and trailing edge parts can be the same width as the middle part of the strip, and all three parts are wider than the front transition part and the rear transition part. To maximize protection against side leakage it is desirable that the middle part has a width that is greater than the width of the leading edge part and the trailing edge part. As a result, during use, when the article is joined to the genital region of an underwear by wrapping the flaps around the side edges of the underwear, at least a portion of the protective strips will be laterally beyond the side edges of the underwear. , thus providing extra protection against leakage of bodily fluids received by the article.
    [0014] Although the base weight of guardrails can be varied depending on the overall parameters of a particular design, generally the first and second guardrails will have a base weight of between about 15 and about 200 grams per square meter. It was found, however, that when using the stiffening means described here, the base weight of the protection strips in some applications can be reduced, as the global rigidity is increased, by acting on the material that forms the protection strips, such as embossing, coating or treating with adhesives and other materials. Another means of increasing the effective stiffness of guardrails is to make the distal ends of the first and second guardrails stiffer than the rest of the guardrails.
    [0015] When the first and second protective strips are separate pieces of material, they can be joined to the article by means of an attachment zone. This attachment zone is typically within the first and second fold lines of the respective first and second guard strips.
    [0016] In certain embodiments, it has been found to be desirable that the proximal edges of the intermediate parts of the first and second guard strips do not overlap the absorbent core.
    [0017] The absorbent personal hygiene article is designed in such a way that the distal ends of the first and second protective strips are not coupled to the article. In this regard, the entire distal edge of the protective bands can be detached from the article or from selected parts only. For example, the middle part of the first and second guard strips are not attached to the article as this allows the flaps to be folded down, while still allowing the middle part of the strips to remain in the same general plane formed by the X and Y axes. of product.
    [0018] The degree of stiffness of the protective strips can be expressed in terms of their stiffness at peak load according to the test on cylindrical specimens. The strips will have a peak load stiffness when compared to the product flaps themselves, which is 20 percent, desirably at least about 50 percent, and more desirably at least about 100 percent greater than the flaps themselves. The percentage increase in stiffness of the guard strips compared to the flaps themselves should range from about 20 percent to about 260 percent, desirably from about 20 to about 160 percent, and most desirably from about 50 to about 50 percent. about 160 percent. If the protective bands are too tight, problems can arise, such as irritation of the wearer's skin, which is an undesirable attribute.
    [0019] In an alternative embodiment, the absorbent toiletries can be equipped with protective strips, characterized in that the leading edge part, the trailing edge part and the front and rear transition parts of the strips have been removed, and so they form a truncated version of the protection strips. In this way, it is possible to reduce expenses, materials and processing steps can be reduced and the protection strips have a length, measured in the longitudinal direction (X axis), which is approximately equal to the length of the flaps in the longitudinal direction. In this embodiment, the article will again have an elongated shape defined by opposing first and second sides, and opposite front and rear ends with the article defining a longitudinal axis, a transverse axis, and a vertical axis perpendicular to the longitudinal axis. and the transverse axis. The article will include a liquid pervious topsheet defining a top surface and a bottom surface, a liquid impervious backsheet and an absorbent core positioned between the liquid pervious topsheet and the liquid impervious backsheet.
    [0020] A first flap extending from the first side having a proximal edge of the flap and a distal edge of the flap and a second flap extending from the second side having a proximal edge of the flap and a distal edge of the flap tab. A fastener is positioned on at least one of the first and second flaps with the first and second flaps each, respectively, being joined to the first side and the second side of the article. The first flap has a first fold line and the second flap has a second fold line with the first flap and second flap being adapted in use to be folded downwardly along respective first and second fold lines with respect to the vertical axis, towards the back sheet.
    [0021] In this embodiment, the article includes a first guard band and a second guard band each defining a proximal edge and a distal edge and a width therebetween, characterized by at least a portion of the distal edge that is linear. The first and second guard strips are each in vertical juxtaposition with the respective first flap and second flap. The first guard strip is located adjacent the first side and the second guard strip is located adjacent the second side of the article such that at least a portion of the first guard strip, including at least a portion of the distal edge extends beyond the first fold line and at least a portion of the second guard strip, including at least a portion of the distal edge, extends beyond the second fold line with the first and second fold lines located below their respective first and second protection strips in relation to the vertical axis of the article. BRIEF DESCRIPTION OF THE DRAWINGS
    [0022] FIGURE 1 is a top plan view of a form of an absorbent toiletries article in accordance with the present invention, in this case a sanitary pad, which is shown in a flat, unfolded state.
    [0023] FIGURE 2 is a top plan view of another embodiment of an absorbent toiletries article of the present invention in a flat, unfolded state.
    [0024] FIGURE 3 is a cross-sectional view of the article of the present invention, taken along line 3-3 of Figure 1.
    [0025] FIGURE 4 is an exploded perspective view of the article of the present invention in Figure 3.
    [0026] FIGURE 5 is a top plan view of a protective strip of the present invention and the cutting pattern for forming a pair of such strips from a single piece of material.
    [0027] FIGURE 6 is a bottom perspective view of an article of the present invention showing the flaps folded over to the bottom layer of the article thus exposing the underside of the protective strips.
    [0028] Figure 7 is a top plan view of an embodiment of an absorbent toiletries article according to the present invention, in this case, a sanitary pad that is shown in a flat, unfolded state. In this embodiment, the sample cutting location is illustrated. DESCRIPTION OF THE INVENTION
    [0029] Referring to figures 1, 2, 3, 4 and 6 of the drawings, absorbent toiletries are shown in a flat, unfolded state. Unless otherwise indicated, discussion of article dimensions and/or positions of individual components thereof is made with reference to the article in a flat, unbent state, and further, if elasticized components are used, dimensions refer to the article in an uncontracted state. Furthermore, as used herein, the terms "comprising" or "including" are inclusive or open-ended and do not exclude additional unmentioned elements, components or method steps. Accordingly, the terms "comprising" or "including" embrace the more restrictive terms "consisting essentially of" and "consisting of".
    [0030] Referring to Figures 1, 2, 3, 4 and 6, there is provided an absorbent toiletries article 20 comprising a liquid pervious topsheet 40, a liquid impervious backsheet 50 and an absorbent core 60. absorbent 20 has a longitudinal or lengthwise direction and an X axis 30, a transverse or width direction and Y axis 32 and a vertical direction and Z axis 34 perpendicular to the plane defined by the X and Y axes. The centerline length of article 20 is also represented by axis X 30 and the transverse centerline is represented by axis Y 32. The absorbent article 20 may comprise any number of elongate shapes, including, but not limited to, triangular, rectangular, bone and ellipticals. In addition, it will often be desirable for the article to have rounded corners and/or generally convex ends. Article 20 defines an opposing first side 22 and longitudinal second side 24 and opposing front 26 and rear 28 ends.
    [0031] The absorbent article 20 desirably has a length of between about 80 millimeters (mm) and about 450 mm, and even more desirably, a length of between about 150 mm to about 290 mm. The absorbent article 20 desirably has a maximum width (excluding the flaps) of between about 40 and about 160 mm, and even more desirably a maximum width of between about 51 mm and about 95 mm.
    [0032] The absorbent article 20 further includes a first flap 70 and second flap 80 extending from opposing longitudinal sides 22 and 24 of the article 20. Each flap has a proximal edge 72, 82 and a distal edge 74, 84. The first and second flaps 70, 80 desirably extend from about 20% to about 75% of the length of the article 20. In another aspect, the flaps desirably have a length in the longitudinal direction X of from about 40 mm to about 160 mm, even more desirably, a length of from about 80 mm to about 100 mm. The flaps 70 and 80 are designed to be folded downwards along a fold line 71 and 81 so that they can be attached to the wearer's underwear or to each other. See Figures 1 and 6. In Figure 6, the edge contour of an example of representative underwear is represented by the dashed line 142. The location of these fold lines will sometimes depend on the shape and width of the underwear to which will be joined or rolled.
    [0033] The flaps may be positioned over the transverse centerline (Y axis 32) or may be positioned at a distance in front of or behind the transverse centerline, as may be desired to better accommodate the particular shape of the article and/or use in a particular style of garment. Furthermore, although not shown, it is noted that absorbent articles may, if desired, contain more than one pair of opposing flaps along the longitudinal sides of the product.
    [0034] A portion of the outward facing surface or garment of the flaps 70, 80 includes one or more fasteners 90. See Figure 2. Fasteners 90 will be selected to detachably fit a garment or a part of the overlap of an opposite tab. A number of adhesives and mechanical hook fasteners that detachably attach to one another or attach to a wearer's garments are well known in the art and suitable for use with the present invention. Pressure sensitive adhesives are particularly suitable for use with the present invention. However, in order to protect the adhesive from contamination or drying out, prior to use, the adhesive is generally protected by one or more tear-off strips 92, as are known in the art. A suitable tear-off strip is white Kraft paper with a silicone coating on one side so that it can be easily detached from the adhesive. Furthermore, with respect to the joint between the flaps, examples of specific mechanical hooks, adhesive and other fastening systems include, but are not limited to, those described in WO03/015682 to Hammonds et al.; WO03/015684 to Hammonds et al. and US2004013317 to Steger et al.
    [0035] The shape of each flap 70, 80 can be symmetrical or asymmetrical as desired. For example, in the embodiments shown in Figures 1, 2, 4 and 6, the flaps are symmetrical and symmetrical about the transverse centerline 32. This is generally desirable when the absorbent core 60 is also symmetrical about the transverse centerline. 32. In an alternative embodiment (not shown), the absorbent core 60 may be shaped to have a wider front section and a narrower back section in order to better conform to a thong-type underwear or thong. as well as a wider back section and a narrower front section for use in connection with certain nighttime feminine hygiene product designs. In those designs, which are widely available, pairs of flaps may be used on either side of the article 20. When this is the case, the article 20 will have a front flap and a rear flap (not shown) on each side of the article. In this type of configuration, the pairs of flaps on either side of the article may be centered over the transverse centerline 32 and/or offset to a greater or lesser degree, either forwards or backwards, with respect to the transverse centerline.
    [0036] With respect to the general function and composition of the article 20, the backsheet or outer covering 50 functions to isolate the absorbed fluids from the wearer's garments and thus comprises a liquid impermeable material. In one aspect, the backsheet 50 may optionally comprise a material that prevents the passage of liquids, but allows air and water vapor to pass therethrough. The backsheet 50 may comprise a single layer or multiple layers, and these one or more layers may include similar or different materials. Suitable backsheet materials include, but are not limited to, polyolefin films, nonwovens and film/nonwoven laminates. The particular structure and composition of the backsheet can be selected from a variety of known films and/or fabrics, with the particular material being selected as appropriate, to provide the desired level of liquid barrier, strength, abrasion resistance, tactile properties, aesthetics, etc. Suitable backsheets include, but are not limited to, those described in US4578069 Whitehead et al.; US4376799 to Tusim et al.; US5695849 to Shawver et al; US6075179 to McCormack et al. and US6376095 to Cheung et al.
    [0037] The topsheet 40 acts to receive and absorb fluids such as urine or menstruation and therefore comprises a liquid permeable material. Additionally, the topsheet can also help to isolate the wearer's skin from fluids held in the absorbent core 60. The backsheets 40 can comprise a single layer or multiple layers, and these one or more layers can include similar or different materials. Topsheets are well known in the art and can be manufactured from a combination of a wide variety of materials, such as, for example, porous foams, reticulated foams, perforated plastic films, woven materials, nonwovens, perforated nonwovens. and their laminates. It is also well known that one or more chemical treatments can be applied to the topsheet materials in order to enhance or slow down the circulation of fluid through the topsheet and into the article. Suitable backsheets include, but are not limited to, those described in US4397644 to Matthews et al.; US4629643 to Curro et al.; US5188625 Van Iten et al.; US5,382,400 to Pike et al.; US5533991 to Kirby et al.; and US6,410,823 to Daley et al.
    [0038] The top sheet 40 has a top surface 27 and a bottom surface 29. The top sheet 40 shown in Figures 1, 2, 3 and 4 is often called a double layer cover as it has a central portion or strip 40A attached to it. by two opposing side strips of material 40B which may be the same material or a different material as the central portion 40A, and may be joined by adhesive 40C or other fastening means, including but not limited to thermal and ultrasonic bonding. Such a two-layer or double-layer configuration is described, for example, in Patent No. 5,961,505 to Coe, Patent No. 5,415,640 to Kirby and Patent No. 6,117,523 to Sugahara, each of which is herein incorporated by reference in its entirety. It is also contemplated that such a two-ply topsheet material material may include elastic components along its side edges to lift portions of the side materials during use, thereby forming physical barriers or retention characteristics in the product so as to fit it more to a user's body.
    [0039] Between the liquid-permeable topsheet 40 and the liquid-impervious backsheet 50, an absorbent core 60 is positioned. The absorbent core 60 functions to absorb and preferably "lock in" bodily fluids passing into the absorbent article. 20 through the topsheet 40. The absorbent core 60 may comprise a single layer or multiple layers, and these one or more layers may include similar or different materials. To efficiently and effectively use the absorbent capacity of the article 20, it is common for the absorbent core 60 to include one or more liquid distribution layers or drainage layers in combination with a highly absorbent layer that preferably absorbs and retains the liquids. Suitable drainage layers include, but are not limited to, bonded-carded wefts, hydroentangled non-woven wefts, or spunbond wefts containing treated fibers or containing one or more topical agents that improve the contact angle with body fluid and/or modify the fluidity properties of body fluid. Highly absorbent layers generally include, but are not limited to, wefts or webs that contain cellulose fiber, superabsorbent particles, synthetic cellulose fibers, synthetic fibers, and combinations thereof. The absorbent core 60 may comprise any number of materials and structures, the particular selection of which will vary depending upon the desired load carrying capacity, flexibility, body fluid to be absorbed and other factors known to those skilled in the art. By way of example, suitable materials and/or structures for the absorbent core include, but are not limited to, those described in US Patent No. US4610678 to Weisman et al.; US6060636 to Yahiaoui et al.; US6610903 to Latimer et al.; US20100174260 to Di Luccio et al.; and US7358282 to Krueger et al.
    [0040] The shape of the absorbent core 60 can be varied as desired and can comprise any of several shapes, including, but not limited to, generally triangular, rectangular, bone-shaped, elliptical and asymmetrical shapes. Asymmetric shapes, whose back or article 60 is larger than the front, are commonly used in articles that are designed for night use, where a larger storage capacity is required. In one embodiment, the absorbent core layer 60 has a shape that generally corresponds to the overall shape of the article 20, such that the absorbent core 60 terminates near the edge sealing region 42 and flaps 70, 80. absorbent core 60 may be substantially similar to those cited above with respect to sanitary napkin 20; however, it will be appreciated that the dimensions of the absorbent core 60, while similar, will often be somewhat smaller than those of the absorbent article 20 generally, in order to be properly contained therein.
    [0041] As indicated above, the absorbent core 60 is positioned between the topsheet 40 and the backsheet 50. The individual layers that make up the article 20 can be joined together using means known in the art, such as adhesive, heat bonding/ pressure, ultrasonic bonding and other suitable mechanical couplings. Commercially available construction adhesives usable in the present invention include, for example, Rextac adhesives available from Huntsman Polymers of Houston, Texas, as well as adhesives available from Bostik Findley, Inc., of Wauwatosa, Wisconsin. In one embodiment, and with reference to Figure 1, the absorbent core 60 may be sealed between the topsheet 40 and the backsheet 60 along the perimeter of the absorbent core 60 along the edge seal 42 formed by applying heat and pressure to melt the thermoplastic polymers located in the topsheet 40 and/or backsheet 50, alternatively, the seal 42 may be formed by adhesive or a combination of adhesive, heat and pressure. For example, all or part of the seal 42 may comprise a thermal bond using a calendered bonding pattern, such as the cross-hatch bonding pattern 42A. See Figures 1 and 6. For example, the seal 42A may extend around the entire periphery of the article 20 or only in selected parts, such as the front 26, the back 28 and the distal edges of the article. tab 74 and 84. In addition, the 42A cross-hatch joining pattern is for illustrative purposes only and it should be understood that other embossing patterns are also possible.
    [0042] To further aid fluid handling, one or more optional layers (not shown) may be used between the topsheet 40 and the absorbent core 60 and, if desired, between the absorbent core 60 and the backsheet 50. In addition, the absorbent core 60 may be wrapped with what is commonly known as a core wrap (not shown), such as a tissue wrap, a meltblown fibrous nonwoven layer, or a combination of spunbond nonwoven fibrous weft materials. and meltblown.
    [0043] The flaps 70 and 80 may be made of the materials described above, with respect to the top sheet 60 and the back sheet 50. In one embodiment, as shown in cross-section of Figure 3, flaps 70 and 80 may comprising an extension of the layers of material which form the top sheet 40 and/or the back sheet 50 and which can be welded together along the sealing edge 42A. In addition, their inner surfaces may be adhered to each other, for example, by a layer of adhesive 40C similar to that used to join parts 40A and 40B of the topsheet 40. Such flaps may be integrally formed with the main part of the absorbent article. 20. Alternatively, the flaps 70 and 80 may be independently formed and separately joined to an intermediate section of the article 20. The flaps 70 and 80 made independent of other components of the absorbent article 20 may be welded or adhesive bonded to a portion of the top sheet 40 and/or back sheet 50. Furthermore, as is known in the art, when cutting materials into the desired shape, it is preferable to arrange the components so as to minimize waste. Examples of manufacturing processes for absorbent articles and flaps include, but are not limited to, those described in US Patent No. US4059114 to Richards; US4862574 to Hassim et al. WO1997040804 to Emenaker et al.; US5342647 to Heindel et al.; US20040040650 to Venturino et al.; and US7070672 to Alcantara et al.
    [0044] As noted, in order to further assist with keeping the article 20 in the desired location on the undergarment, garment adhesive 94 or other means of attachment may be applied to the garment-facing side of the garment. backsheet 50. To protect the garment adhesives 94 prior to use, the release strips 96 may be releasably adhered to the garment facing side of the adhesives, which may subsequently be removed prior to use and installation of the garment. item 20 on wearer's underwear (not shown). The use of garment adhesive 94 on the backsheet 50 to assist in securely placing an absorbent article 20 on the garment is well known in the art and there are numerous adhesive patterns and release strips suitable for use with the present invention. . Examples of suitable garment adhesives, patterns and tear-off strips include, but are not limited to, those described in DE700225U1; US3881490 to Whitehead et al.; US 3913580 Ginocchio; US 4337772 to Roeder et al.; GB1349962 Roeder; US4556146 to Swanson et al.; and US20070073255A1 to Thomas et al.
    [0045] The absorbent articles of the present invention may further include one or more components or elements as desired. By way of example, the absorbent article 20 may optionally include slits, voids or embossments on the topsheet and/or absorbent core, in order to improve fluid absorption, liquid distribution, rigidity (bending strength) and/or or aesthetic appeal. As a specific example and with reference to Figures 1, 2, 3 and 4, the embossing 25 may extend either into the topsheet 40 and the absorbent core 60, or into the intermediate layers. Examples of suitable additional embossing patterns and embossing methods include, but are not limited to, those described in US Patent Nos. US4781710 Megison et al.; EP769284A1 to Mizutani et al.; US20050182374 to Zander et al.; and US7686790 to Rasmussen et al.
    [0046] In order to facilitate protection against leakage along the first side 22 and the second side 24 of the article 20, the article is equipped with pieces of material that form protective strips, whose function is to remain more generally in the plane defined by the X and Y axes when the flaps 70 and 80 are folded down to secure the article 20 to the wearer's underwear. Referring to Figures 1, 2, 3 and 4, the first guard strip 100 and the second guard strip 110 each define a proximal edge 101 and distal edge 102 with a width of 103 therebetween. The first and second protective strips 100, 110 each define a respective front part 104, a rear part 106 and an intermediate part 108 arranged between the front part 104 and the rear part 106. Each front part 104 is respectively separated from the intermediate parts 108 by a front transition part 105, while each rear part 106 is separated by its respective intermediate part 108 by a rear transition part 109.
    [0047] The distal edges 102 may be divided into a front distal edge 102A, a rear distal edge 102B, and a mid portion distal edge 102C. The distal edge of the front part 102A and the distal edge of the middle part 102C are separated by a distal edge of the front transition part 102D while the distal edge of the rear part 102B and the distal edge of the middle part 102C are separated by a distal edge of the front part 102B. rear transition part 102E. The proximal edges 101 of the first and second guardrails 100 and 110 are shown to be linear or straight, as are the distal edges of the intermediate portion 102C and therefore are parallel to each other. Alternatively, the edges can be generally parallel, meaning the respective edges are parallel at ten degrees to each other. In other embodiments the proximal edge may be non-linear, if desired. In contrast, the respective distal edges of the leading part 102A of the leading edge parts 104 and the distal edges of the trailing edge 102B of the trailing edge parts 106 are not linear as are the distal edges 102D of the leading transition parts 105 and the distal edges. 102E of the trailing edge portions 109. Specifically, the respective distal edges 102A and 102B of the leading edge portions 104 and the trailing edge portions 106 are generally convex with respect to the proximal edges 101, while the distal ends 102D of the front transition portions 105 and the distal edges 102E of the rear transition portions 109 are generally concave with respect to the proximal edges 101.
    [0048] The widths 103 of the first and second guardrails 100 and 110 will vary as can be seen in Figures 1, 2, 4 and 5. By "width" is meant a measurement in the direction of the transverse axis Y. Referring to Figure 4, in some applications, the first guard strip 100 and the second guard strip 110 will each have an intermediate portion 103C width that is generally equal to one or both of their respective front portion widths 103A and the respective widths of the back 103B. By generally equal, it is meant that the widths (as measured by their largest values perpendicular to the proximal edges of the strips) of comparative sections are within about ten percent of each other. In other and more preferred embodiments, the width of the intermediate part 103C will be greater than the width of the front part 103A and the width of the rear part 103B. For most article 20 configurations, these front, rear and middle widths will vary between about 5 mm and about 25 mm, and more particularly between about 15 mm and about 22 mm.
    [0049] The widths of the front transition 103D of the respective portions of the front transitions 105 will be smaller than the widths of the front portions 103A and intermediate portions 103C. Similarly, the widths of the back transition 103E of the respective portions of the back transitions 106 will be smaller than the widths of the back portions 103B and the intermediate portions 103C. For most item 20 configurations, such widths of transition portions 103D and 103E will range from about 5mm to about 22mm, and more particularly from about 10mm to about 15mm. Again such comparisons are made using the maximum widths in the respective parts measured normal to the proximal edges of the strips.
    [0050] One of the advantages of the present design is that the protection provided by protection bands 100 and 110 can be performed without increasing the overall dimensions of article 20. As can be seen from, for example, Figures 1, 2 and 4 , protective strips 100 and 110 do not extend beyond the full length or width of article 20 as the distal edges 102 of strips 100 and 110 do not extend beyond the lateral or longitudinal dimensions of the overall product and sides 22 and 24 and end 26 and 28 of article 20. The front and rear edges 104 and 106 have distal edges that are in vertical alignment with the edges of the underlying product and therefore do not extend beyond the first side edge 22 and second side edge 24. Furthermore, the intermediate portions 108 of the strips 100 and 110 do not extend beyond the side edges of the respective flaps 70 and 80 when the product is in a flattened state as shown in the drawings. Generally, the maximum width of the intermediate portion 103C will be less than the maximum width of the tabs 70 and 80, as indicated by the reference numeral 103F, which is the distance between the proximal edge 101 and the distal edge flap 74, 84. In making this determination, the proximal edge 101 should be used as the reference point for both distal measurements. More desirably, the maximum width of the intermediate portion 103C will be between about 20 and about 60 percent of the maximum width 103F of the tabs 70 and 80, and more preferably between about 30 and about 50 percent and, alternatively, between about 20 and about 40 percent or between about 40 and about 60 percent.
    [0051] To maintain good side leakage protection, it is also desirable that the middle portion of the distal edge 102C extends an adequate distance beyond the fold lines 71 and 81 of the flaps 70 and 80 such that when the flaps 70 and 80 are folded down as shown in Figure 6, guard strips 100 and 110 continue to be exposed and remain generally in the plane created by the longitudinal and transverse axes X and Y. As a result, it is desirable that the middle portion of the distal edge 102C extends from about 1 to about 20 millimeters beyond respective fold lines 71 and 81 of flaps 70 and 80 and more preferably from about 5 to about 15 mm beyond respective fold lines 71 and 81 of flaps 70 and 80.
    [0052] Referring to Figure 5, in order to maximize the cost-effectiveness of forming the first guard strip 100 and the second guard strip 110, which can be formed from a single sheet of material 130. As shown in Figure 5, the intermediate parts 108 have a common cut line 132, while the respective front parts 104 and front transition parts 105 can be formed from a single front cut line 134 which results in a part of the front residue. 136. Likewise, the respective trailing edge portions 106 and trailing transition portions 109 may be formed from a single trailing cut line 138 which results in a portion of trailing residue 140. Since the first strip of guard 100 and the second guard strip 110 have been cut, they can be inverted and fixed in place on article 20.
    [0053] One of the fundamental aspects of the present invention is the fact that the guard strips 100 and 110 are stiffer than the first and second flaps or flaps 70 and 80. The stiffness of the strips can be affected in a number of ways. First, because of the material chosen for the manufacture of the tracks. It is generally desirable for the strips to be soft to the touch as they will be in contact with the skin of the wearer of the article 20. Protective strips 100 and 110 can be made from a variety of materials, including the materials used to make the top sheet. 40, backsheet 50 and flaps 70 and 80. They may be composed of non-woven fibrous webs such as airflow processed spunlace materials such as airflow bonded carded batts, chemically bonded carded batts , heat bonded carded mats, spunbond mats and meltblown mats, as well as films and laminates of these materials. The bands can also be formed from laminates in which the outer body contacting surfaces are made from softer materials, while the inner layer(s) are made from harder materials. In addition, other materials such as films, reinforcing fabrics, nets and other materials can be used alone or in combination with the other materials listed herein to obtain a band of material that is soft and rigid enough to resist bending. during use. Furthermore, they can be treated to be more or less hydrophilic or hydrophobic. Generally, the basis weight of the protective tapes will be from about 15 to about 200 grams per square meter (g/m2), alternatively from about 20 to about 50 g/m2. It is also preferred that the material used to form the protective strips is not elastic or stretchable.
    [0054] Generally, it is desirable that the bands 100 and 110 have a stiffness between about 1.0 and about 10.0 grams-force, and more desirably, between about 2.5 and about 6.3 grams-force. force. When comparing the stiffness of bands 100 and 110) to the stiffness of the first and second tabs (70 and 80), it is generally desirable for the bands to have a stiffness value that is at least about 20 percent greater than the stiffness of the first and second tabs alone, desirably at least about 50 percent and more desirably at least about 100 percent.
    [0055] Additional processing measures can be taken to further improve the rigidity of tracks 70 and 80. Referring to Figures 2, 4 and 5, it is possible to see that tracks 100 and 110 are embossed with a series of engravings. in relief by sinusoidal point, whose purpose is to compress the material(s) that form the bands and increase the general rigidity of the material. Such embossing can be made using shaped rolls which are preferably heated in order to melt and partially bond the materials/fibers. It is also to be understood that the embossing pattern shown in the indicated drawings is for illustrative purposes only, and that other embossing patterns and techniques may be used with the present invention. For example, ultrasonic bonding can also be used, as well as continuous embossing lines that run parallel to the longitudinal axis X and the transverse axis Y, as well as at angles relative to these axes. In addition, selected parts of tracks 100 and 110 may be manufactured more rigidly than other parts. For example, the intermediate part 108 can be made more rigidly on the front part 104 and/or the rear part 106 or vice versa. Alternatively, selected areas of a particular part 104, 105, 106, 108 and 109 can be manufactured more rigid than other areas of the same part or other parts.
    [0056] Other processing steps to increase the rigidity of the bands 100 and 110 may include, but are not limited to, the use of adhesives or other coatings, such as waxes and polymeric coatings on the top and/or bottom sides of the bands or between the layers. , when the bands comprise laminates of individual layers. As with embossing, the adhesive can be affixed in the same types of patterns described with embossing or in different patterns. In addition, the adhesive method for curing the strips can be used in conjunction with embossing to further harden strips 100 and 110. In addition, printing strips 100 and 110, especially with higher viscosity inks can be used to complement the rigidity of the bands. Such stamping, polymeric coatings, waxes, adhesives, printing inks and other hardening techniques may collectively be referred to as reinforcing means.
    [0057] The union of bands 100 and 110 to article 20 can be achieved in several ways. Referring to Figures 1, 3 and 6, the first flap 70 and the second flap 80 are joined or formed from other layers of the article 20 (such as the top sheet 40 and the back sheet 50) such that each of the flaps 70 and 80 preferably fold over a respective first fold line 71 and second fold line 81. The strips 100 and 110 should be joined to the article 20 at an innermost location (i.e. closer to the longitudinal axis X) than fold lines 71 and 81. See Figure 1. As a result, when flaps 70 and 80 are folded down (as shown in Figure 6), they are free to do so since the fold lines 71 and 81 are located below the bands 100 and 110 with respect to the vertical axis Z. Consequently, when the flaps 70 and 80 are folded around the edges of an undergarment (see reference numeral 142 in Figure 6), the guardrails 100 and 110 are free to remain in an unfolded state.
    [0058] Referring again to Figure 1, the first protective strip 100 is joined to the top sheet 40 by a first joining zone 150 and the second protective strip 110 is joined to the top sheet 40 by a second joining zone 160, each of which can be run along the entire longitudinal length of the article 20. The bands can be secured by a number of means, including adhesives, thermal, pressure, ultrasonic, and combinations thereof. Referring to Figure 3, the respective bands 100 and 110 are each joined to the topsheet 40 by means of adhesive bands 151 and 161. In general, these fastening zones 150 and 160 will have a width along the Y axis. cross-sectional between about 1 and about 10 mm, and more desirably, between about 2 and about 6 mm. If desired, the embossing can also be continuous in nature or discontinuous, either in the longitudinal, transverse or both directions.
    [0059] As can be seen in Figures 1 and 3, as the bands 100 and 110 are only joined to the article 20 in the attachment zones 150 and 160, with the remainder of the bands 100 and 110, including the distal edges 102 and areas of the width 103 adjacent thereto will not be secured to the article 20. In alternative embodiments (not shown), it is possible to have only the intermediate portions 108 out of the fold lines 71 and 81 detached from the article 20. In such embodiments, some or all of the leading edge portions 104, trailing edge portions 106, front transition portion 105 and rear transition portion 109 may be joined to the underlying areas of article 20.
    [0060] Referring again to Figure 3, it is possible to see that the proximal edge 101 of the protective strips 100 and 110 do not overlap the absorbent core 60, when viewed along the vertical axis Z, at least in the intermediate parts 108 ranges 100 and 110. As a result of this lack of overlap, the general article 20 has a better fit and is more comfortable to wear. While this is a preferred embodiment, it is also possible for the proximal edges 101 to overlap the absorbent core 60. Furthermore, it should be noted that while the guard strips 100 and 110 are shown as separate pieces of material, they are also may be formed from extensions of other layers of the article 20. For example, although not shown, bands 100 and 110 may be formed from extensions of the topsheet 40. In such situations, it may be desirable to treat portions of the topsheet 40 that form strips 100 and 110 with one or more of the above curing means such as embossing, curing with adhesives or inks, and combinations thereof. If bands 100 and 110 are made from an extension of another layer, bands 100 and 110 will not have actual proximal edges 101. In this case, article 20 can be assumed to have a virtual proximal edge 101, which is to be interpreted as a imaginary line equivalent to reference numeral 101, which is inside fold lines 71 and 81 (i.e. closer to longitudinal centerline 30 and X axis) by a distance of 5 mm, measured from fold lines 71 and 81. Furthermore, in the context of the claims, in connection with such constructions without an actual proximal edge, the terms "linked" or "joined" and variants thereof are to be interpreted as the site of attachment or joining of bands 100 and 110 to the article 20, which is the location of the imaginary line associated with the reference number 101.
    [0061] In an alternative embodiment, the guard strips 100 and 110 can be reduced in size, such that they only cover the middle part 108. See Figures 1 and 2. In this configuration, the guard strips can be terminated , for example, at breakpoints 107 which are located at the front transition parts 105 and rear transition parts 109 of the guard strips 100 and 110. Otherwise, all other aspects of the strips remain the same, as the strips are devoid of material outside the breakpoints 107, thus allowing the production of an article 20 with reduced use of material and, therefore, a reduced cost. Furthermore, although the breakpoint 107 has been shown at the transition parts 105 and 109, it should be noted that they may be located closer to or further away from the transverse axis 32 by increasing or decreasing the longitudinal length of the guard strips 100 and 110, and thus increasing or decreasing its overall size and cost.
    [0062] In a further embodiment (not shown), the protective strips can be manufactured from a part of one of the layers, such as, for example, the strips or sides 40B of the top sheet 40. As opposed to having separate sheets of material 100 and 110, which are joined to the sides 40B via adhesive 40C (see Figure 3), the adhesive 40C can be eliminated and the two layers can be replaced with a single piece of material with a fold line (not shown) in place of adhesive 40C such that the material is folded back on itself and the fold line becomes proximal edge 101. As with other embodiments, part of this Combined and folded material that forms the bands 100 and 110 can be altered to increase their rigidity, using, for example, the aforementioned hardening means such as, for example, embossing and adhesive. Samples and Tests
    [0063] The stiffness of protective bands 100 and 110 can be measured by determining the peak load flexural stiffness at peak load of the materials. This stiffness can be determined using ASTM test procedure D4032-82 TEST ON CYLINDRICAL TESTS, as modified herein. This modified test is used for the purposes of the present invention and is hereinafter referred to as "Test Procedure on Cylindrical Specimens". The Cylindrical Specimen Test Procedure is a simultaneous multidirectional deformation of a material in which one side of the specimen becomes concave and the other side becomes convex. The Cylindrical Specimen Test Procedure provides a force value related to flexural strength, at the same time determining the average stiffness in all directions, and the values are reported as stiffness at peak load in grams-force.
    [0064] The plunger and plate of the apparatus in the above-mentioned test procedure is modified as follows: The platform is of the flat and polished steel plate platform type with dimensions of 102.0 mm x 102.0 mm x 6, 35 (thickness) mm. The circular hole measures 18.75 mm in diameter and is located in the center of the plate. The edge of the hole turn is cut at a 45 degree angle to a depth of 4.75 mm for easy sample and plunger entry. The plunger has an overall length to the ball point of 72.2 mm, a diameter of 6.25 mm, a flat rear end, a ball point with a radius of 2.97 mm and a needle point extending 0. 88 mm from there, with a base diameter of 0.33 mm and a point having a radius of less than 0.5 mm. The test plate is flush and the plunger mounted is concentrically with the bore having equal clearance on all sides. Note that the purpose of the needle tip is to prevent lateral movement of the test sample during testing. Therefore, if the needle tip significantly impairs the test sample (for example, by puncturing an inflatable structure contained in the sample), then the needle tip should not be used. The ball end of the plunger is just above the top of the orifice plate. From this position, the downward stroke of the ball end of the plunger is the exact bottom of the plate hole. An MTS Insight Electromechanical 5kN Standard Length Tensile Tester, manufactured by MTS Systems Corp, of Eden Prairie, Minnesota, or equivalent device with a compression load cell, is used to measure bending force.
    [0065] The sample preparation procedure for the Test Procedure on cylindrical specimens is as follows: With reference to Figure 7 of the drawings, a sanitary napkin 20 is removed from its packaging and placed open. A sampling square designated 170 in Figure 7 measuring 37.5 mm x 37.5 mm (1.47 in. x 1.47 in.) is cut to form a portion of each of the tabs 70, 80, preferably along of the transverse center line of each flap. The cut samples are conditioned in a room at 21.0 +/-0.1°C and a percent relative humidity of 50.0 +/-0.2 for a minimum of two hours. After cutting, the specimen must not be flexed, bent, pinched or otherwise deformed before being placed on the testing platform.
    [0066] The measurement procedure for the Test Procedure on cylindrical specimens is as follows: The piston speed is set at 50.0 centimeters per minute per total stroke length. A sample 170 is centered on the orifice platform below the plunger such that the top sheet 40 of the sample faces the plunger and the back sheet 50 of the sample faces the platform. Prior to placing the sample on the platform, the release strip 92, if present, is removed from any adhesive 90 on the surface of the sample garment, and the adhesive 90 is blocked by a coating of cornstarch, talc, or any other material. other composition suitable for detacking the adhesive. During testing, avoid touching the sample unnecessarily. The maximum force reading to the nearest 0.1 gram-force is recorded and presented as the stiffness at peak load.
    [0067] Once the testing of a sample has been completed, the protective strip is removed from the sample and the sample is retested. When removing the protective strip, care must be taken not to damage the rest of the sample. With the 100/110 protection band removed, the second sample stiffness measurement without the 100 protection band is done in the same manner as described above. The plunger contact point for both measurements (with and without the 100/110 protection range) must be in the same position on both samples. The difference in the two stiffness measurements (with and without the guard band) is the stiffness of the guard band 100/110.
    [0068] To determine the rigidity of the protective bands 100, 110, a series of samples were prepared and tested. As the laboratory samples were being prepared, sanitary napkins of the shape and design shown in Figure 2 were prepared with and without the protective strips, so the strip removal step did not have to be performed. Flaps 70 and 80 were composed of topsheet material 40B and backsheet material 50. The topsheet material was a 30 grams per square meter air flow processed bonded carded batt using bicomponent fibers of 1 .5 denier for the polyethylene sheath/polypropylene core. The backsheet was a polyethylene film with a basis weight of 24 g/m 2 and a thickness of 0.03 mm. The two layers were adhesively laminated together using about 28 g/m2 of hot-melt adhesive. In samples with a protective strip, the strip was joined to the upper surface of the flap and was manufactured from a 40 grams per square meter TABW weft using 2.0 denier bicomponent staple fibers for the polyethylene/polypropylene core sheath. . The protective strip has been embossed with a pattern as shown in Figure 2. Its proximal edge 101 has been joined to the top sheet 40B with a 4 mm wide strip of hot-melt adhesive in a complement of about 41 g/m2.
    [0069] Samples were cut from both flaps 100 and 110 as described above, and the peak load stiffness test was determined for each sample. The peak load stiffness of the bands is calculated by subtracting the peak load value of a sample without the protection band (B) from the peak load value of the same sample with the protection band (A). The percentage increase in stiffness in samples with protection bands compared to samples without protection bands was calculated using the equation [(AB)/B]x100 = % increase. In evaluating the products, if any of the protection bands have a prescribed percentage increase value that is within a limitation of the claim, then the product as a whole is considered to have this value, even if the other protection band of the same product has a lower value. The values obtained for the tested samples are shown in Table 1 below. As each product sample has two tabs, each product is indicated as having an "a" sample and a "b" sample.

    [0070] Generally speaking, side leakage protection with the designs described here has been found to provide better results when the percentage increase in stiffness at peak load is at least 20 percent, desirably by at least about 50 percent. percent and more desirably at least about 100 percent, and should be between about 20 percent and about 260 percent, desirably between about 20 and about 160 percent, and more desirably, between about 50 and about 50 percent. about 160 percent. The peak load of the protection band will desirably range between about 1.0 and about 10.0 grams of force, and more desirably, between about 2.5 grams of force and about 6.3 grams of force, although the values outside this range may also be used, depending on the particular end-use requirements. If the protective bands are too tight, problems can arise, such as irritation of the wearer's skin, which is an undesirable attribute.
    [0071] The toiletries may optionally contain one or more additional elements or components as are known and used in the art, including but not limited to the use of fold lines, individual wrappers, elastic flaps that extend above the plane of the backsheet in use, additional independent flaps such as over the edges, odor control agents, perfumes, and the use of ink printing on one or more surfaces of the topsheet, backsheet, flaps, absorbent core and others layers. In addition, other additional features and various constructs are known in the art. Thus, while the invention has been described in detail with respect to specific representations, it will be apparent to those skilled in the art that various alterations, modifications and other alterations may be made to the invention without departing from the spirit and scope thereof. Therefore, the claims are intended to encompass all such modifications, alterations and other changes.
    权利要求:
    Claims (18)
    [0001]
    1. An absorbent personal care article (20) comprising: an elongate shape defined by opposing first and second sides, and opposing front and rear ends; the article defining a longitudinal axis, a transverse axis and a vertical axis perpendicular to the longitudinal axis and the transverse axis; a liquid permeable top sheet (40) defining a top surface (27) and a bottom surface (29), a back sheet (50) liquid impermeable (50) and an absorbent core (60) positioned between the liquid pervious topsheet (40) and liquid impervious backsheet (50) (50); a first flap (70) extending from the first side (22) and having a proximal edge (72, 82) of the flap and a distal edge (74, 84) of the flap; a second flap (80) extending from the second side (24) and having a proximal edge (72, 82) of the flap and a distal edge (74, 84) of the flap; characterized in that it further comprises a fastening element (90) positioned at one of said first (70) and second (80) flaps; the first flap (70) having a first fold line (71, 81) and the second flap (80) having a second fold line (71, 81); the first flap (70) and the second flap (80) are adapted in use folded down and along respective first and second fold lines with respect to the vertical axis towards the backsheet (50); the article further including a first guard band and a second guard band, each defining a proximal edge (72, 82) and a distal edge (74, 84) and a width therebetween; the first and second guard strips each defining a leading edge part and a trailing edge part with an intermediate part disposed between the leading edge part and the trailing edge part; the leading edge part is separated from the middle part by a front transition part, the trailing edge part is separated from the middle part by a rear transition part; the first protective strip is located adjacent to the first side (22) of the article and the second guard strip is located adjacent the second side (24) of the article such that a portion of the first guard strip, including a portion of the distal edge (74, 84), extends beyond the first fold line ( 71, 81) and a portion of the second guard strip, including a portion of the distal edge (74, 84) extending beyond the second fold line (71, 81); the first and second fold lines (71, 81) are located below the respective first and second guard strips, with respect to the vertical axis; the middle part of the first and second guard strips, each having a distal edge (74, 81). 84), a part of which is linear, the front transition part and the rear transition part having a width less than the width of the front part, the middle part and the rear part; and wherein the distal edge (74, 84) of the first and second guard strips is not secured to the article.
    [0002]
    2. The absorbent article (20) of personal hygiene of claim 1 characterized in that a front part and a rear part of the first and second protective strip are non-linear.
    [0003]
    3. The absorbent article (20) of personal hygiene of claim 1, characterized in that the first and second protective strips are embossed (25).
    [0004]
    The absorbent personal care article (20) of claim 1 characterized by the first and second protective strips that are attached to the top surface (27) of the top sheet (40).
    [0005]
    The absorbent personal care article (20) of claim 1, characterized by the distal edges of the front and rear of the first and second protective strips that do not extend beyond the respective first and second sides of the article.
    [0006]
    The absorbent personal care article (20) of claim 1 characterized in that the width of the middle part of the first and second protective strip is within ten percent of the width of a front and rear portion of the respective strips.
    [0007]
    The absorbent personal care article (20) of claim 1, characterized by the first and second protective strip having a basis weight of between about 15 and about 200 grams per square meter.
    [0008]
    The absorbent personal care article (20) of claim 1, characterized in that the distal edge (74, 84) of the first and second protective band is more rigid than the rest of the respective bands.
    [0009]
    9. The absorbent article (20) of personal hygiene of claim 1, characterized in that the first and second protective strips are joined to the article by the joining zone.
    [0010]
    The absorbent personal care article (20) of claim 9, characterized in that the seams are within the first and second fold lines (71, 81) of the respective first and second protective strips.
    [0011]
    The absorbent personal care article (20) of claim 1, characterized in that the proximal edge (72, 82) of the middle part of the first and second guard strips does not overlap the absorbent core (60).
    [0012]
    12. The absorbent article (20) of claim 1, characterized by the distal edge (74, 84) of the middle part of the first and second protective strip that is not attached to the article.
    [0013]
    13. The absorbent article (20) of personal hygiene of claim 1, characterized in that, during use, the article is attached to a genital region of an underwear, the underwear having side edges, a part of the protective bands extends laterally beyond the side edges of the underwear.
    [0014]
    The absorbent personal hygiene article (20) of claim 1, characterized in that a portion of the first protective strip and the second protective strip have been reinforced by a stiffening means.
    [0015]
    15. The absorbent article (20) of claim 1, characterized in that the middle part of the protective strips individually has a peak load stiffness of between about 1.0 and about 10.0 grams of force.
    [0016]
    16. The absorbent article (20) of claim 1, characterized by one of the first protective band and the second protective band having a percentage increase in peak load stiffness of 20 percent.
    [0017]
    An absorbent personal care article (20) as claimed in claim 1 comprising: an elongate shape defined by opposing first and second sides, and opposing front and rear ends; the article defining a longitudinal axis, a transverse axis and a vertical axis perpendicular to the longitudinal axis and the transverse axis; a liquid permeable top sheet (40) defining a top surface (27) and a bottom surface (29), a back sheet (50) liquid impermeable (50) and an absorbent core (60) positioned between the liquid pervious topsheet (40) and liquid impervious backsheet (50) (50); a first flap (70) extending from the first side (22) and has a proximal edge (72, 82) of the flap and a distal edge (74, 84) of the flap; a second flap (80) extending from the second side (24) and has a proximal edge (72, 82) of the flap and a distal edge (74, 84) of the flap; an attachment member (90) positioned on one of said first (70) and second (80) flaps; the first flap ( 70) having a first fold line (71, 81) and the second flap (80) having a second fold line (71, 81); the first flap (70) and the second flap (80) are adapted for use folded down and along respective first and second fold lines with respect to the vertical axis towards the backsheet (50); the article further includes a first guard strip and a second guard strip, each defining a proximal edge (72, 82) and a distal edge (74, 84) and a width therebetween characterized by a portion of the distal edge (74, 84) which is straight, the first and second guard strips are in vertical overlap with the respective first flap (70) and second flap (80); the first guard strip is located adjacent to the first side (22) of the article and the second protective strip is located adjacent the second side (24) of the article, so that a portion of the first protective strip, including a portion of the distal edge (74, 84), extends beyond the first fold line (71, 81). ) and a part of the second protection strip, including a part of the border the distal (74, 84) extends beyond the second fold line (71, 81); the first and second fold lines (71, 81) are located below the respective first and second guard strips with respect to the vertical axis; and wherein the distal edge (74, 84) of the first and second guard strips is not secured to the article.
    [0018]
    The absorbent personal care article (20) of claim 17, characterized in that a portion of the first protective strip and the second protective strip have been reinforced by a stiffening means.
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    同族专利:
    公开号 | 公开日
    US20140343525A1|2014-11-20|
    CN105188626A|2015-12-23|
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    WO2014188301A1|2014-11-27|
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    CN105188626B|2017-06-09|
    US9173786B2|2015-11-03|
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    BR112015027468A2|2017-07-25|
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    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-07-13| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2021-08-17| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-11-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2022-01-04| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/05/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/897,747|US9173786B2|2013-05-20|2013-05-20|Absorbent personal care article having wings and protective strips|
    US13/897,747|2013-05-20|
    PCT/IB2014/061380|WO2014188301A1|2013-05-20|2014-05-12|Absorbent personal care article having wings and protective strips|
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