• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A fiberfill structure is provided by fiberfill in form of a new structure, fluffy distinct fiber clusters and by new processes for producing new structures. CONSTITUTION: A process of preparing new down-like clusters employs a method of point-bonding thermoplastic cut fibers in a stack of webs of carded fibers or continuous filaments in a tow, and then cutting and separating the resulting clusters which have an entirely different structure that is refluffable. Ultrasonic bonding is worked the bonding method.
    公开号:KR20000022275A
    申请号:KR1019980710696
    申请日:1997-06-26
    公开日:2000-04-25
    发明作者:일란 마르쿠스
    申请人:이.아이,듀우판드네모아앤드캄파니；
    IPC主号:
    专利说明:

    New Fiber Filler Structures
    Synthetic fillers have been satisfactorily accepted as inexpensive fillers in bedding, furniture, apparel products and similar applications. These materials, which are generally made of polyester, are highly appreciated for their bulk and hand.
    Fiber fillers have traditionally been used in the form of carded webs that are cross-laid to promote their thickness into batts used to fill pillows, quilts or other products. A wide variety of fibers with different cross sections, bulks, deniers and blends of different fibers have been used to create the desired elasticity and ductility, for example Hoffmann, U.S. Pat. No. 3,271,189 and Mead, U.S. Pat. It has been generally coated with a silicone slickener coating as disclosed in the present disclosure to reduce fiber / fiber friction and to provide the bat with better ductility and improved recovery from squeeze, the inventors of US Pat. No. 4,818,599 Several non-silicon slinkners have been used in place of silicon as described in the call and related art, and other prior art.
    The bat structure does not allow the filler to move back and forth, does not allow it to be shaped to fit the user's body shape, and does not allow it to be re-flipped back to its original shape after use, unlike natural fillers. The down and down / feather blends are characterized by their shape, and are characterized by their ability to easily reflip in a circle by shaking and patting. Therefore, it has been proposed and tried many times to simulate down-like properties using synthetic fibers.
    U. S. Patent No. 3,892, 909, entitled "Synthetic Down," to Miller, for example, discloses the use of two types of bodies made from synthetic fibers as fillers for pillows. Suggested. Miller proposed a large body of rotation, such as a spherical or cylindrical shape, and a feathered body to fill the void space between the large bodies to make up most of the bulk of the pillow. Miller's feathered body was a unilateral or bilateral bundle filament of staple fiber filaments joined at the center (bilateral) or at one end (unilateral). The bundle of Millers was sprayed with a compatible binder applied in such a way as to bond the fibers at the intersection and to evenly distribute the binder throughout the body. Other methods proposed to preserve shape were heat, impulse heating, laser or ultrasonic energy, and melting with chemicals commonly applied.
    Later, Tani et al. Proposed in US Pat. No. 4,418,103 as follows. That is, the taries are (1) opening the tow, (2) pressing the ends of the filaments together (at one end of the tow) to a very high fiber density specific to a narrow slit or groove, (3) tow Cutting the (filament) to expose the cut end face, (4) melting the ends of the filaments together while the ends of the filaments are still maintained at their high fiber density compression conditions in narrow slits or grooves, (5) Advancing the tow to advance the end of the just melted filament the desired distance from the narrow slit or groove, and (6) cutting the tow filament to remove them from the narrow slit or groove, wherein Cream, repeating steps 4-6, continuing to maintain the end of the tow in the crimped condition, except that the tow is periodically run in step 5). The (crimped) proposed a method starting from the tow of continuous filaments (e.g., polyester). Thani said that when their filaments were cut (step 6), they spread spherically or radially around the molten ends. Thani illustrated his method in Figure 1 of his patent. Thani said that the spherical mass produced could be used as a filler. To obtain a filler similar to down, Tani suggested dividing the spherical mass into smaller cotton-like materials consisting of about 12 to 200 fibers, which is illustrated in FIG. 2 of his patent. Thani stressed that the crimped fibers in his fillers were always joined together at high density at one end, while the other end of the fiber remained free. This is the inevitable result of Tani's method, because he melted the ends of his filaments, so that the chopped fibers would only be connected at their ends where they were melted (so that the resulting fillers he cut (crimped) Extending almost twice its length). Thani pointed out that he could use other joining methods.
    We believe that none of Miller or Thani's suggestions have been made commercially or commercially. In contrast, however, the problem in providing a fiber filler product having the ability to move around inside the ticking to shape the wearer's body and then re-flip to obtain a road prototype is virtually unacceptable in 1985-6. For example, it was solved on a commercial scale by providing fiberballs as disclosed in US Pat. Nos. 4,618,531 and 4,783,364, and 5,112,684. These patents refer to several prior proposals of the prior art to make replacements for feathers or downs.
    Fiberballs (or sometimes referred to as clusters) have become similar to natural fillers, such as down, in reproducing these capabilities moving inside the ticking and refluff, and have been successfully used for back cushions of pillows and furniture. However, further improvements still remain.
    In accordance with the present invention, the present inventors now provide a novel structure with a narrow and small junction which is three-dimensional in fiber distribution and similar to those exhibiting down characteristics. It is important for the inventors to have a fiber tuft with a fully open fiber, with the limitations on fully deploying the bulk of the fiber besides this small junction, preferably only this junction in each tuft. There is no. The inventors believe that the junction point is required to avoid flocculation and to ensure reflopability by maintaining the nature of the individual tufts during use. In contrast to fiber balls, where the fibers are rolled together and the cluster nature is maintained by the entanglement of the fibers, the fibers of the present invention are fully open and their bulk is fully developed. The structure of the present invention may have the advantage of being soft, reflopped, washable in a washing machine, and providing improved thermal insulation. The structure of the present invention has both the reflopping advantage of the fiber balls and the thermal insulation of the fiber bat.
    The tufts of the present invention need not only be bonded at the ends of the fibers as suggested by Tani or need only be bonded at the center or one end as suggested by Miller, but may be at any position in the individual tufts. Indeed, mixtures in which the bonding position changes with the length of the fiber are the result and feature of the novel process of the present invention, and the inventors have finally discovered that for all tufts of the present invention the bond is not always in the same position. This has yielded excellent results, which is also an advantage.
    Splicing itself can be accomplished using different means, but the inventors have reasoned that they effectively combine the fibers with as little as possible and use the band of fibers as small as possible without damaging the bulk of the band of fibers adjacent to the joining area. Preference is given to joining techniques that enable maximizing bulk. We have found that ultrasonic bonding is used in a convenient technique for achieving such bonding.
    <Overview of invention>
    The present invention is more commonly referred to as clusters of thermoplastic fibers ("puffs" or "tufts") that have a crimped structure and are bonded together at a small portion of the fiber length, preferably at locations extending along 2-10%. However, the present inventors note that in fillers (including products filled with these fillers), including the term &quot; mostly cluster &quot; herein, the fibers are joined at varying positions in different clusters in the filler. It provides an improvement. In other words, the joining is not done at the same location for all clusters as described by Thani and Miller, but at locations that vary along the length of the fiber in different clusters in the filler.
    The fibers in these clusters should preferably be fully open and free enough to unfold their bulk, but are joined so that the individual fibers do not move completely free and independent of each other. The inventors have found that this would be beneficial with regard to reflopping, because the inventors believe that this reduces the ability of the clusters to intertwine with each other. The fibers are bonded together only at very limited positions relative to their surface area, and this bonding area is 20 mm or less, for example 1-20 mm × 0.5-10 mm, preferably 15% or less of the total area of the fiber or cluster. Or small dimensions of up to 10%, in particular from 1 to 5%. It is understood that the clusters (puffs) preferably have a size (dimension) of 5 to 100 mm, preferably 1 to 5 cm, and the dimensions generally depend on the desired end use. At least 80% of the fibers are preferably joined in clusters. If desired, a mixture of fibers comprising a mixture of non-thermoplastic fibers comprising natural fibers can be used, in particular when a suitable bonding method is used. For good reflopability, the number of unbonded fibers should generally be minimized. For other purposes, for example, for structures bonded using the binder fibers, using the clusters of the invention to produce molded articles, or for other products using the binder fibers, the clusters of the invention It can be used in a mixture with chopped fibers or natural fibers.
    Preferably, the cluster of the present invention has a controlled size distribution such as the number of filaments per cluster and the dimensions of the cluster. Like other advantages of the present invention such adjustment is feasible due to the novel method of the present invention described below.
    Suitable fibers can have a wide range of properties for making fiber fillers with different filling capabilities and ductility. They can be made of the same polymer or different polymers, can have the same denier and cross section, or can be a combination of different denier and / or cross sections. Suitable examples are the prior art for the fiber balls referenced above, and for example, US Pat. No. 3,772,137 to Tolliver, EPA 2 67 684 to Jones et al., Brodus US Pat. No. 5,104,725 to US Pat. No. 5,458,971 to Hernandez et al. The fibers are preferably 1-6 cm in length (relaxed), as described in the fiber filler literature, and are preferably sleeked using, for example, 0.05-1.5% by weight of a silicone slimner. For example, as described in US Pat. No. 4,818,599, other disclosures of non-silicone slickers and copolymers of polyalkylene oxides and aromatic polyesters may also be used. The crimped structure of the fiber comprising a blend of fibers having different bulk geometries can be mechanical or so-called spiral. All or any such fibers can be used to make the fiber structures of the present invention and by varying the properties of the products of the present invention by selecting the crimp type, crimp level, denier, cross section and blend (s) of the fibers used. The ability to adapt them to the end use or specific needs of the market is provided. For further details, reference may be made to prior patents, including US Pat. Nos. 4,618,531, 4,783,364, and 5,112,684. Synthetic fibers are generally preferred for the practical reasons indicated in the above literature, of which polyester fibers are very good for providing good results and are generally preferred for use as fiber fillers. Other synthetic polymers, which relate to fiber, may also be used in whole or in part in place of synthetic polyester.
    For many filled products, the slunked fibers are often desirable in terms of their aesthetics, but the present invention can also be applied to using dry (not slunked) fibers. Using such non-sleek fibers may be used to form clusters or mix clusters with binder fibers, for example using binder fibers mixed with load-bearing fibers to produce molded articles such as molded cushions and mattresses. This can be particularly advantageous for use with binder fibers. Such binder fibers are disclosed in the art, such as in US Pat. No. 5,527,600 to Francosky et al. And the techniques disclosed therein, bicomponent binder fibers are generally preferred, particularly for load-bearing cores and binder materials. Sheath-core bicomponent fibers with sheaths are preferred. Thus, the filler and filler material may comprise clusters in a mixture with the chopped fibers comprising a binder material that is activated to create a bonded network.
    According to the invention, (1) forming a fiber into an overlapping web stack of such paralleled fibers, (2) passing the stack through a bond zone and intermittently forming a pattern of thermoplastic fibers in the stack Bonding together, (3) cutting the resulting stack of intermittently bonded fibers, and (4) separating the resulting cutting stack into clusters, wherein the crimped structure has a length of 1 Also provided are methods of making clusters of bonded thermoplastic fibers that are from 6 cm to 6 cm.
    According to the present invention, (1) forming a tow of a continuous thermoplastic filament having a crimped structure, (2) passing the tow through a tow throttle to open the tow, and opening the tow to the junction zone. Passing the thermoplastic filaments in the tow to be bonded together in a pattern of intermittently bonded sections, (3) cutting the resulting tow of the intermittently joined filaments, and (4) the resulting cutting tow Also provided is a method of making a cluster of bonded thermoplastic fibers comprising the step of separating into clusters of chopped fibers.
    Preferably, after step (2), before the produced tow is cut in step (3), the intermittently joined filaments in the tow are connected so that the joined section is separated.
    Further aspects and a more detailed description of the invention are provided below.
    The present invention relates to, and in connection with, a fiberfill, more particularly a novel structural form of filler, ie an apparent fluffy fiber cluster in which the fibers can be bonded and reflipped together. (Puffs), and novel methods for producing such novel structures and articles filled with or associated therewith, such as molding articles and shaped articles made therefrom, and materials related thereto. It is about improvement in.
    1 is a photograph of clusters and control natural down in accordance with the present invention.
    2 is a schematic diagram illustrating a design portion for a patterned roll used in the examples.
    3 is a schematic front view of a bonding device for use in accordance with the present invention;
    The properties of the refluffable fiber clusters (puffs) of the present invention can be seen from the picture of FIG. 1, where the cluster of the present invention is shown on the right side of the picture and the cluster of control down is shown on the left side of the picture. For example, the fiber filler of the present invention may be present at any point along the length of the fiber, although the fiber does not need to be at its end, provided that it is joined in small compartments that are not at the same point for all clusters in the filler. It consists of individual clusters.
    Indeed, the inventors have found that the bonding position varies along the length of the fiber, i.e. in some clusters the bonding position is at or near the end of the fiber, while the other cluster has its bonding position at a distance that is considerably spaced from the end of the fiber. It was finally found that it is desirable to provide a mixture of products. Thus, the inventors were able to perform the joining itself which did not significantly reduce the crimp of the fibers in the vicinity of the joined area. This fiber has a three-dimensional distribution, although it may not be uniformly distributed in all directions as a natural product. This new structure is very similar to the structure of down, but the fibers we used to provide the examples had no barbs at all. The use of barbed fibers as a starting material provides further access to the intimate structure of natural products.
    The down is nonuniform in nature and changes in structure depending on the position of the body of the algae and the algae from which the down is drawn. The down can vary in the nature and size of the flagpole, in the thickness of the filament and in the distribution of the filament near the flagpole. The products of the present invention can be prepared by reproducing such deformed structures by selecting the fibers or fiber blends from which the fiber fillers of the present invention are made and by selecting process parameters such as appropriate bonding patterns. The dimensions of the cluster can also be adjusted by selecting variables such as starting material, bonding patterns and conditions, thickness of the fiber layer, and cutting conditions.
    The present invention also provides a method of making such a refloppable fiber filler of the present invention. According to one aspect of the invention, staple fibers are preferably carded using webs superimposed on top of each other, rather than being superimposed on one another, and the resulting bats pass through the splicer to produce an intermittent splice pattern. This pattern preferably consists of rows of short discontinuous junction regions separated by small gaps. The joining region preferably has an extended shape whose length is at an angle of 0 to 45 degrees with respect to the axis of the joining roll, ie 45 to 90 degrees with respect to the machine direction. We believe that conjugation can be accomplished by several different means. We are particularly pleased with ultrasonic bonding, which can bond only a small area (i.e., a limited area) of the fiber surface without much affecting the rest of the fiber, or its properties such as crimp and bulk of the fiber. I found that it can. Bonding rolls and ultrasonic horns (sonotrode) can be made to precisely adjust the pattern, and as described above, bonding does not damage the bulk of the fiber immediately adjacent to the bonded area. For the end use of most fiber fillers, it is important to maximize bulk and fill capacity. The joined batt is then passed through a cutter and the cut length is preferably adjusted to be equal to or slightly shorter than the distance between the rows of joining rolls. The cutting material can then be separated into clusters similar to the individual downs by mechanical means, for example by passing the cutting material through one or more bar rolls to separate the material into individual tufts or clusters.
    According to another aspect of the invention, the starting material is in the form of a tow. The tow passes through the tow relator to open the tow, separate it into individual filaments, and the open tow is guided through a similar splicer. The joining tow is then similarly cut with a cut length that is preferably equal to or slightly shorter than the distance between the rows of joining rolls. We find that the cutting material made from such a bonded tow can be very easily separated into individual clusters according to the present invention because the filaments in the tow are generally oriented much more longitudinally than the fibers in the carded bat of staple fibers. I found that. If desired, the intermittently bonded tow can be detached and detached, prior to being cut as shown in the examples, and the inventors have found this to be advantageous.
    The tension in the joining region is preferably controlled by a drive roll located both upstream and downstream of the joining roll. This allows the tension in the bonding area to be precisely controlled.
    A suitable bonding device will now be described with reference to FIG. 3 of the accompanying drawings, in which a superimposed web of carded fibers, or a tow running in a flat form, is bonded and in either case, FIGS. 3 to 3 of FIG. It is represented by a flat web 11 introduced into the bonding device, generally represented by 12 from the left. The web 11 first passes through the nip between the pair of drive rolls 14 before joining and then through the nip between the pair of drive rolls 15 after joining. When the web 11 is entrained through the bonder 12 by paper as a carrier, this paper 16 is fed from the paper feed roll 17. The web 11 and paper 16 pass together between a pair of drive rolls 14, then between an ultrasonic horn 21 and a bonding roll 22, and then a pair of drive rolls 15. Pass through. Then, while the web 11 is passed through a cutter (not shown), the paper carrier 16 leaves the pattern bonded web 11 and rewinds onto the roll 18.
    The clusters are preferably tumbled or otherwise proceeded before being filled into a pillow or other filled product or packaged to improve their fluffability.
    The number of fibers in each individual cluster actually depends on the fiber denier, the bonding pattern and the thickness of the fiber structure introduced into the bonding zone. These can easily be varied to produce the fiber fillers of the present invention having different cluster sizes, bulks, ductility and shapes.
    The crimp geometry of the fibers also has a significant effect on the three-dimensional fiber distribution in the individual clusters, consequently on the fillability, ductility, size and thermal insulation of the fiber fillers of the present invention.
    The method of the present invention has the advantage that when using a preferred ultrasonic bonding method, it is simple and inexpensive and requires relatively little investment. This makes it possible to carry out the invention in a compact manufacturing apparatus which is located close to the consumer and which can reduce the transportation cost of the lightweight and bulky fiber filler of the invention. The method of the present invention is variable so that it is possible to manufacture a wide range of new products and to manufacture a product that meets the needs of a particular market. The cost can be further reduced by combining the tow bonding method with a tow take-off operation.
    Downs have been mostly used in quilted quilts, ski suits, casual clothes and similar products that require high thermal insulation, unlike products such as furniture cushions that require high elasticity or high resilience from compression. However, the products of the present invention are not limited to these applications and can be tailored to the needs of products such as pillows or furniture cushions by appropriate selection of feed fibers and process conditions. Indeed, as described herein, the products of the present invention are intended as examples by the inventors in U.S. Patent Nos. 4,794,038, 4,940,502, 5,169,580, 5,294,392, and 5,500,295. Likewise, it can be used as a feed material for making molded articles and other articles.
    The method is further illustrated using polyester fibers in the examples below.
    Bonding device for Examples 1-3 is 22 cm wide, single head, 20 kHz, British Textile, Manchester, UK, equipped with a patterned bonding roll having a design partially shown in FIG. 2 (not an actual measurement). It was a Pinsonic machine from the British Textile Technology Group. Changes in techniques to achieve intermittent bonding patterns include, for example, applying the pattern in other ways, for example providing raised strips on continuous bonding rolls and blocking across the entire width of the machine. Instead of using an ultrasonic foot (sometimes referred to as a "horn" or "sonot rod") that provides unstable ultrasonic energy, this includes providing an intermittent gap in the use of ultrasound, thereby providing better results. Could be provided (less unbonded fibers). The ultrasonic bonding method is preferred because it can melt the fiber intermittently in such a way that the molten portion solidifies in the bonded state at the point of contact between the roll and the foot, with little effect on the rest of the fiber. The dimensions of the protrusions on the patterned joint roll are as follows:
    Between rows measured in the longitudinal direction (MD): 30 mm,
    Between rolls measured perpendicular to the rows: 21 mm,
    The width of the protrusion measured perpendicular to the rows: 2 mm,
    The length of the protrusion measured in the cross direction (CD): 3 mm,
    Gap between protrusions measured in the transverse direction (CD): 3 mm,
    -Depth of the pattern at the 42 degree angle between the roll and the MD (height of the protrusion): 3 mm,
    -Angle between roll and MD: 42 degrees.
    For Examples 1 to 3, polyester staple fibers were carded as shown in Table 1, and the carded webs in the stack were superimposed on top of each other to achieve the above-described bat weight per unit area and the carded fibers were bonded to the splicer. Bats were prepared by being oriented parallel to the longitudinal direction (MD) of. The bat was then cut into strips 20 cm wide in the longitudinal direction and rolled with paper as a carrier for delivery to the ultrasonic adapter. These rolls were joined together at the introduction of the ultrasonic bonder to provide the rolls with a joined material of sufficient length to feed the cutter. After the bonded material was cut on a guillotine-type laboratory cutter, the cut material was manually separated into individual tufts.
    Example made from staples Supply fiberOne23 Bat weight (g / ㎡)240200300 dtex / filament6.16.06.0 Cutting length (mm)755050 section7-holeeleganceelegance CrimpMSS Junction Condition Speed (m / min)999 Horn pressure (㎏ / ㎠)1.051.051.5 Relative pressure (%)707070 Cutting length (mm)28 and 222828
    Note: All of the feed fibers were sleeked to about 0.5% by weight of commercial silicone sleekner (corresponding to about 0.25% of Si, which is a common way to calculate as% Si based on the weight of the fiber). "M" and "S" represent mechanical and helical crimps, respectively. The cross section of the seven-hole is described in US Pat. No. 5,104,725 to Brows, in contrast to the cross section of the solid phase, which has a circumferential cross section.
    <Example 1>
    At a cut length of 22 mm, the product was easily separated into individual tufts. A relatively small number of filaments were bonded at one or more points, so that they were either crushed or cut to separate them into individual tufts with only one bond point per tuft, which was desirable.
    At a cut length of 28 mm, separation was more difficult. Although the webs formed on the cards were carefully superimposed, the carded fibers were not as paralleled as in the tow (see examples below), which resulted in different distributions and orientations of the fibers around the bonded area.
    The product exhibited small junction areas at various locations along the sufficiently open and bulked fibers in the tufts.
    <Example 2>
    The 200 g / m 2 batt used as feed in this example was difficult to process due to the inferior integrity of the bat. However, the resulting bonding material was easily separated into individual tufts having a rounder shape than the product of Example 1, and the spiral crimp added ductility and sleekness to the product as compared to Example 1.
    <Example 3>
    Since the only difference between the bats of Examples 2 and 3 is the bat density (thickness), greater horn pressure was applied. The number of filaments per unit area of 300 g / m 2 bats was much higher, which resulted in a much higher number of filaments per tuft. These tufts were bulkier and were more resistant to compression. This illustrates one of the variables that enable the operator to change the dimensions and properties of the product of the present invention.
    The remaining examples (see Table 2 below) were made from tows (tow of continuous filaments) instead of chopped fibers in a stack of webs.
    Examples 4, 4A and 5 were prepared from tow products using different roll designs with the following characteristics, which were improved to reduce the number of bonded areas as well as the number of unbonded fibers:
    Row spacing (MD): 28 mm,
    Angle of the columns with respect to the roll axis: 30 degrees,
    -Junction section: length 3 mm, width 1 mm,
    Gap between adjacent junction sections: 0.5 mm,
    The height of the junction compartments: 1.5 mm, and
    -Height of the gap: 0.75 mm (half the height of the junction compartment).
    Materials and Conditions Used for Examples 4, 4A, and 544A5 Supply fiber (ktex)48.948.946.7 dtex / filament4.04.06.7 sectionHollowHollowHollow Crimp (CHI)10109-10 Junction Condition Speed (m / min)151514 Horn pressure (㎏ / ㎠)1.51.01.4 Relative power (%)606060 Cutting length (mm)242424
    <Example 4>
    A 48.9 ktex silicified tow with about 122,000 single-hole hollow filaments with 4.0 dtex / filament, CHI 10 and silicon concentration of about 0.4% (calculated based on the weight of the fiber) was opened on the tow continuum. The open toe was carefully hand-laid into the cardboard and placed to attempt bonding and cutting. The tow was unwound and stretched and fed into the sonicator. Unwinding and handling the open toe resulted in a large number of filaments that were entangled and resulted in a crushed filament that produced a wrap on the joining roll, so that a roll of paper was used as a carrier under the toe to form a patterned bond between the tow and the tow. Passed. A higher pressure of 1.5 kg / cm 2 was required compared to 1.0 kg / cm 2 (see Example 4A) to achieve the same bonding as would be done without paper. The bonded toe was stretched by hand in the width direction and then opened by cutting to 24 mm on a commercial Lumus cutter.
    A paper interliner was used to reduce the number of unbonded filaments from 31.8% (Example 4A) to 13.8%. This percentage must be further reduced by using a device specifically designed for this purpose, ensuring better parallelism of the fibers, and adjusting the toe bundle thickness uniformity.
    <Example 4A>
    This example used the same open toe feed, and the same bonding pattern and speed, except that no paper interliner was used. Lower pressure compared to Example 4 was required to achieve the same bond (lowered from 1.5 kg / cm 2 to 1.0 kg / cm 2). The driving performance was very satisfactory and the only difference in quality was the higher percentage of unbonded filaments (31.8%).
    We find that due to the conditions under which these tests were performed (ie, using devices designed for other purposes, not using devices designed specifically for the use according to the invention), an inappropriately large number of filaments result in bonding of rolls. There was a tendency to accumulate in the gaps between the compartments, and the paper is believed to have inappropriately reduced the number of unbonded filaments.
    Example 5
    The siliconized tow of a single hole hollow filament of about 46.7 ktex, 6.7 dtex / filament, CHI 9-10 and silicon concentration of about 0.36% (calculated based on the weight of the fiber), in fact, except as shown in Table 2 Treatment was as described in Example 4. The workability was better than the material of Example 4 (using a paper roll as in Example 4).
    Note: The cut length setting on the cutter is always higher than the relaxed length of the resulting joint product. CHI (less for chip crimps) is the number of crimps per toe band 2.54 cm (1 inch) in the relaxed state. Silicon concentration was measured by X-rays.
    权利要求:
    Claims (10)
    [1" claim-type="Currently amended] A filler comprising a cluster of thermoplastic fibers having a crimped structure and bonded together at a location extending along a small portion of the fiber length, the cluster of thermoplastic fibers characterized in that they are bonded at varying positions in different clusters of the filler. Filler comprising a, and the product filled with the filler.
    [2" claim-type="Currently amended] The filler of claim 1 wherein said small portion is 2-10%.
    [3" claim-type="Currently amended] The filler according to claim 1 or 2, wherein the cluster has a size of 1 to 5 cm.
    [4" claim-type="Currently amended] The filler according to any one of claims 1 to 3, wherein the fibers are coated with 0.05 to 1.5% by weight of silicone slinkner.
    [5" claim-type="Currently amended] The filler according to any one of claims 1 to 4, wherein the cluster is mixed with the cut fibers.
    [6" claim-type="Currently amended] 6. The filler according to claim 5, wherein the cluster is mixed with chopped fibers comprising a binder material that is activated to create a bonded network.
    [7" claim-type="Currently amended] (1) forming a bonded thermoplastic fiber having a crimped structure and length of 1 to 6 cm into an overlapping web stack of such parallelized fibers, (2) passing the stack through a bond zone to Bonding together the thermoplastic fibers in the stack intermittently in a pattern, (3) cutting the resulting stack of intermittently bonded fibers, and (4) separating the resulting cut stack into clusters. The manufacturing method of the cluster of fibers.
    [8" claim-type="Currently amended] (1) forming a tow of a continuous thermoplastic filament having a crimped structure, (2) passing the tow through a tow relator to open the tow, and passing the tow through a bonding zone to Allowing the thermoplastic filaments to be bonded together in one pattern of intermittently bonded sections, (3) cutting the resulting tow of the intermittently joined filaments, and (4) turning the resulting cutting tow into clusters of cutting fibers. A method of making a cluster of bonded thermoplastic fibers, comprising the step of separating.
    [9" claim-type="Currently amended] The method according to claim 8, wherein after step (2), before the resulting tow is cut in step (3), the intermittently joined filaments in the tow are extended so that the joined sections are separated.
    [10" claim-type="Currently amended] The method of claim 7, wherein the bonding is performed by ultrasonic energy.
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    同族专利:
    公开号 | 公开日
    KR100489324B1|2005-12-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-06-28|Priority to US60/020,671
    1997-06-06|Priority to US08/871,875
    1997-06-06|Priority to US8/871,875
    1997-06-26|Application filed by 이.아이,듀우판드네모아앤드캄파니
    1997-06-26|Priority to KR10-1998-0710696A
    2000-04-25|Publication of KR20000022275A
    2005-12-21|Application granted
    2005-12-21|Publication of KR100489324B1
    优先权:
    申请号 | 申请日 | 专利标题
    US60/020,671|1996-06-28|
    US08/871,875|1997-06-06|
    US8/871,875|1997-06-06|
    KR10-1998-0710696A|KR100489324B1|1996-06-28|1997-06-26|New Fiberfill Structure|
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