WO1997048846A1 - Tissu a fibres courtes non tisse et article absorbant realise a l'aide de ce tissu - Google Patents

Tissu a fibres courtes non tisse et article absorbant realise a l'aide de ce tissu Download PDF

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Publication number
WO1997048846A1
WO1997048846A1 PCT/JP1997/002073 JP9702073W WO9748846A1 WO 1997048846 A1 WO1997048846 A1 WO 1997048846A1 JP 9702073 W JP9702073 W JP 9702073W WO 9748846 A1 WO9748846 A1 WO 9748846A1
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WO
WIPO (PCT)
Prior art keywords
fiber
nonwoven fabric
short
fibers
component
Prior art date
Application number
PCT/JP1997/002073
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English (en)
Japanese (ja)
Inventor
Koki Nagano
Shigeru Hirabayashi
Original Assignee
Chisso Corporation
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26499651&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997048846(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Chisso Corporation filed Critical Chisso Corporation
Priority to EP97926261A priority Critical patent/EP0906981A4/fr
Priority to CA002256550A priority patent/CA2256550A1/fr
Priority to AU31077/97A priority patent/AU3107797A/en
Priority to JP50266798A priority patent/JP3219250B2/ja
Publication of WO1997048846A1 publication Critical patent/WO1997048846A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • D04H1/62—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently at spaced points or locations
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5414—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres side-by-side
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/629—Composite strand or fiber material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/632—A single nonwoven layer comprising non-linear synthetic polymeric strand or fiber material and strand or fiber material not specified as non-linear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/632—A single nonwoven layer comprising non-linear synthetic polymeric strand or fiber material and strand or fiber material not specified as non-linear
    • Y10T442/633—Synthetic polymeric strand or fiber material is of staple length
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y10T442/641—Sheath-core multicomponent strand or fiber material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/69—Autogenously bonded nonwoven fabric

Definitions

  • the present invention relates to a short-fiber nonwoven fabric, and more particularly, a short-fiber nonwoven fabric suitably used for sanitary materials such as disposable diapers, napkins, incontinence pads, breast milk pads, wipers, and the like, and an absorbent material using the short-fiber nonwoven fabric.
  • sanitary materials such as disposable diapers, napkins, incontinence pads, breast milk pads, wipers, and the like
  • absorbent material using the short-fiber nonwoven fabric.
  • the above-mentioned conventional nonwoven fabric uses a card machine, and the fibers are hooked by a needle cloth and arranged in the machine direction, so that the bulkiness that the fibers can contribute to the nonwoven fabric has been lost. Therefore, a bulky nonwoven fabric that sufficiently functions to contribute to the bulkiness of the fibers has not been obtained, and it was not always satisfactory.
  • An object of the present invention is to improve these drawbacks and to provide a bulky nonwoven fabric in which fibers have a sufficiently high bulkiness that can contribute to the nonwoven fabric. Disclosure of the invention
  • the short-fiber nonwoven fabric of the present invention and an absorbent article using the same are as follows.
  • the fiber length is 3 to 25 mm and the single yarn fineness is 1 to 100 denier
  • At least one of the short fibers is a short fiber having an eccentric sheath-core structure in which high-crystalline polypropylene is used as a core component and high-density polyethylene is used as a sheath component.
  • the short-fiber nonwoven fabric according to the above.
  • FIG. 1 is a side view of an apparatus for producing the nonwoven fabric of the present invention.
  • FIG. 2 is a partially cutaway plan view of the airlaid apparatus 1 in the apparatus of FIG. is there.
  • FIG. 3 is a cross-sectional view of the device of FIG. 2 taken along the line EE ′ in the direction of the arrow.
  • the fibers used in the short-fiber nonwoven fabric of the present invention include natural fibers such as pulp and cotton, rayon (regenerated fiber), acetate (semi-synthetic fiber), and nylon, vinylon, polyester, acryl, Examples include synthetic fibers such as polyethylene, polypropylene, and polystyrene.
  • any type of fiber can be used as long as it adheres when a binder is used and does not impair the uniformity of the nonwoven fabric, but a powdery binder that falls as small particles or a water solution that requires drying Thermoplastic fibers are preferred which have a heat-bonding property that allows the intersections of the fibers to adhere in a short period of time by heat treatment without using a conductive binder.
  • the fiber length of the short fibers constituting the short fiber nonwoven fabric of the present invention needs to be in the range of 3 to 25 mm, preferably 3 to 15 mm, and more preferably 5 to 1 Omm.
  • the number of crimps is about 5 metric inches (2.54 cm), so that the fiber length of a single crimp is 5 mm and the number of crimps is two.
  • the optimum fiber length is 1 Omm, which is the length of the wound fiber.
  • the fiber length is less than 3 mm, the strength of the nonwoven fabric is reduced. If the fiber length exceeds 25 mm, it is difficult to produce a uniform web because the fibers are entangled before passing through a sieve or screen.
  • the thickness of the fiber is from 1 to 100 denier, preferably from 1.5 to 35 denier, more preferably from 1.5 to 20 denier.
  • the thickness of the fiber is less than 1 denier, the fiber density in the cylindrical screen increases, and a uniform web cannot be produced. Also, if the fiber thickness exceeds 100 denier, a uniform force can be produced because the force between the fibers increases. Peg.
  • Specific volume of the short fiber nonwoven fabric of the present invention is 4 0 ⁇ 2 00 cm 3 Zg, good or Ku is 7 0 ⁇ 1 5 0 cm Zg. If the specific volume of the nonwoven fabric is less than 4 O cm 3 / g, the nonwoven fabric becomes hard and is not preferable. On the other hand, if the specific volume of the nonwoven fabric exceeds 200 cm 3 Zg, the strength of the nonwoven fabric becomes small, which is not preferable.
  • the number of fiber lump having a volume of 1 mm 3 or more in the nonwoven fabric needs to be 5 or less per 20 g of the nonwoven fabric. If the amount of the fiber lumps having the specific size mixed in the nonwoven fabric exceeds the above range, the nonwoven fabric becomes non-uniform, a rough feeling occurs, and the color of the nonwoven fabric becomes uneven due to the fiber lumps. Any inconvenience occurs and is not preferred.
  • the fiber used in the short-fiber nonwoven fabric of the present invention is a composite fiber composed of at least two components (hereinafter, referred to as component (A) and component (B)), the following resins and the like can be used as a raw material.
  • Examples of the resin (A) include polypropylene, high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, and a binary or terpolymer of propylene with another ⁇ -olefin.
  • the resin of the component for example, polypropylene, high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, a binary or terpolymer of propylene with other ⁇ -olefins Etc.
  • Other spinnable resins such as a mixture of resins, can be used.
  • the difference between the melting points of the (A) and (B) component resins is preferably 10 ° C. or more.
  • the low melting point component of the composite fiber is melted, the high melting point component remains as it is, and the intersection of the fibers is thermally bonded.
  • a heat-bonding nonwoven fabric having a three-dimensional network structure can be formed.
  • the melting point means the softening point.
  • the measurement of the softening point conforms to JIS K2530.
  • Examples of such a combination of the resin components (A) and (B) include, for example, high-density polyethylene polypropylene, low-density polyethylene propylene-ethylene butene-1 crystalline copolymer, high-density polyethylene / polyethylene terephthalate, and nylon 6Z.
  • Nylon 66 low melting point polyester Z polyethylene terephthalate, polypropylene Z polyethylene terephthalate, polyvinylidene fluoride / polyethylene terephthalate, mixture of linear low-density polyethylene and high-density polyethylene Polyethylene terephthalate Etc. can be exemplified.
  • thermoplastic conjugate fiber is made of an olefin-based resin or a polyester-based resin, or a combination of both.
  • examples of such a combination of the (A) and (B) resin components include, for example, high-density polyethylene Z polypropylene, Low-density poly (ethylene propylene) -ethylene butene-1 crystalline copolymer, high-density polyethylene Z polyethylene terephthalate, low-melting polyester / polyethylene terephthalate, polypropylene / Examples include polyethylene terephthalate and linear low-density polyethylene zpolyethylene terephthalate.
  • the form of the composite fiber is a sheath-core type, an eccentric sheath-core type, a side-by-side type, a multilayer type having three or more layers, a hollow multilayer type, a heterogeneous (non-circular) multilayer type, etc., and the resin components (A) and (B) Among them, a structure in which the low melting point resin component forms at least a part of the fiber surface may be used.
  • the most preferable combination of the constituent components of the composite fiber and its form is a composite fiber having an eccentric sheath-core structure in which the thermoplastic composite fiber has a highly crystalline polypropylene as a core component and a high-density polyethylene as a sheath component. And it has a spiral crimp. Since a fiber having a spiral crimp has a large storage space per single yarn, a web formed by laminating becomes extremely bulky.
  • the bulkiness of the tube greatly depends on the number of crimps of the thermoplastic fiber used, and it is particularly preferable that the fiber has a helical crimp of 3 to 20 mountains Z inches (2.54 cm).
  • “3 to 20 inches (2.54 cm)” means that the number of crimps per 1 inch (ie, 2.54 cm) of fiber length is 3 to 20 mountains. . More preferably, it is a fiber having a helical crimp of 5 to 15 mountain inches (2.54 cm), more preferably 5 to 10 mountain inches (2.54 cm).
  • a nonwoven fabric using fibers having a crimp number in this range is very bulky and preferable.
  • the bulk of the nonwoven fabric tends to be small, as in the case of straight fibers.
  • the number of crimps of the spiral type is considerably larger than 20 mountains Z inches (2.54 cm)
  • the bulk of the nonwoven fabric tends to decrease on the contrary because the holding space per single yarn is small. is there.
  • the composite ratio of the low melting point resin component to the high melting point resin component is 10 to 90% by weight for the low melting point resin component and 90 to 10% by weight for the high melting point resin component. It is. More preferably, the low melting point resin component is 30 to 70% by weight, and the high melting point resin component is 70 to 30% by weight.
  • the low-melting resin component is less than 10% by weight, the heat-bondable nonwoven fabric made of the composite fiber has insufficient tensile strength, and when it exceeds 90% by weight, the core remaining without being melted at the time of thermal bonding is too small. Therefore, the bulk of the heat-bonded nonwoven fabric made of the conjugate fiber tends to be small.
  • the nonwoven fabric When the short fibers are straight, the nonwoven fabric is very uniform, but the bulk is small and very flat, which narrows the range of application and development as a product. .
  • Examples of the crimped shape of the short fibers used in the short-fiber nonwoven fabric of the present invention include spiral (three-dimensional crimped), zigzag, and wavy shapes. Short fibers having crimps of any of these shapes can be used for the short fiber nonwoven fabric of the present invention, but spiral crimps are most preferred.
  • a method of not pulling the tube may be considered. For example, there is a method of producing the tube by dropping the fibers. According to the method of dispersing fibers one after another, the fibers are not entangled with each other and pulled, so that the bulkiness of the fibers themselves is not impaired and the bulkiness of the fibers is fully functioned. Nonwoven fabrics can be made.
  • Some short fibers are easily entangled and others are hard to be entangled.
  • the crimps having a zigzag shape and having a large number of crimps and / or having a large crimp set force tend to be relatively easily entangled.
  • short fibers with a crimped wavy shape tend to be easily entangled because the ends of the fibers are fishhook-shaped, and short fibers with a crimped spiral shape are located close to the circumference of the same circle. It is particularly preferable because it is difficult to get entangled.
  • the unspread portion can be reduced by selecting the shape of the crimp.
  • the crimped shape is more wavy than the zigzag shape, and more helical than the wavy shape, in which the fibers are easily dispersed and the unspread portion is small. In other words, the occurrence of the entanglement between the fibers and the unopened portion can be suppressed by the shape of the crimp.
  • the fiber is uniformly dispersed three-dimensionally, and the fiber is deposited to produce a tube.
  • the object of the present invention of providing a bulky nonwoven fabric having a sufficiently high bulkiness that fibers can contribute to the nonwoven fabric can be achieved.
  • the nonwoven fabric made by the method of sieving the fiber and passing it through the screen is a three-dimensionally dispersed and piled down fiber, so it is compared to a nonwoven fabric in which the fiber is aligned in one direction by a force machine.
  • the nonwoven fabric is particularly suitable for applications that have a soft feeling and directly touch the body, for example, absorbent articles such as disposable diapers and napkins.
  • a large specific volume means that it is bulky and has a high cushioning property, so it can be used for bandages and eye patches, ranchon mats, cooking utensils, glassware packaging materials, fruits and vegetables, cut flower packaging materials, musical instruments and furniture. It is suitable for use in applications requiring cushioning, such as packaging materials.
  • the heat-adhesive conjugate fiber used for the short-fiber nonwoven fabric of the present invention can be produced, for example, by the following steps.
  • Undrawn yarn from 3 denier to 400 denier is produced by drawing at a discharge rate of 100 g / min to 200 g / min and a take-up speed of 40 m / min to 1300 m / min. I do. Not yet The drawn yarn is drawn between the two rolls heated from 60 ° C. to 120 ° C. with the rotation speed of the second roll being higher than the rotation speed of the first roll. By setting the ratio of the rotation speed of the first roll to the rotation speed of the second roll between 1: 2 and 1: 5, a drawn yarn of 1 denier or 100 denier is produced. .
  • a finishing agent is applied to the drawn yarn with a touch roll, it is passed through a box-type crimping machine to produce a crimped tow.
  • the number of crimps is preferably 0 to 25 peaks per inch. Since the tow contains about 10% by weight of moisture, it is dried at 60 ° C to 120 ° C using a dryer. The dried tow is cut to a fixed fiber length within a fiber length range of 3 mm to 25 mm using a push-to-cut type cutter. Such a fiber length is substantially shorter than the fiber used for the conventional card nonwoven fabric.
  • Nonwoven fabric when fabricating non-woven fabric, use multiple forming heads and use different fineness or different crimped short fibers in each forming part to have density gradient in the thickness direction.
  • Nonwoven fabric can be produced.
  • the nonwoven fabric having a density gradient in the thickness direction manufactured in this way can be used as a nonwoven fabric material for filters such as liquid filters and air filters.
  • the short-fiber nonwoven fabric produced as described above can be used as an absorbent article, such as a disposable diaper, as a surface nonwoven fabric, a second sheet, or a backing sheet.
  • the short fiber nonwoven fabric is bulky, it is suitable as a second sheet requiring bulkiness.
  • a nonwoven fabric obtained by mixing pulp, heat-fusible fibers and a high water-absorbing material is suitable as an absorber that does not lose its shape during urine absorption.
  • the short-fiber nonwoven fabric of the present invention can be produced as follows using short fibers having a fiber length of 3 to 25 mm using an air-laid apparatus.
  • Air raid device 1 has an opening only on the lower surface as shown in Figs.
  • a casing 2 having a trapezoidal cross section, fiber inlets 3 and 4 provided at both ends of the casing 2, respectively, facing the inlets 3 and 4, and being parallel to a side surface of the casing 2.
  • the web forming heads 5 and 6 made of rotatable cylindrical screens 5a and 6a are provided so as to be in sliding contact with the inner walls of the cylindrical screens 5a and 6a, respectively.
  • Fiber circulating zones 7 provided between both end portions of the provided needle rolls 5b and 6b and the cylindrical screens 5a and 6a, and both end surfaces of the casing 2 respectively.
  • a net conveyor 9a is provided directly below the lower surface of the arrayed device 1, and a pair of drive rolls 17a and 17b and a suction device 10 are attached to the net conveyor 9a.
  • a suction dryer 12 for thermally bonding the composite fibers constituting the web and a net conveyor 19b for passing the web here are attached, and below the net conveyor 19b.
  • a pair of drive rolls 17c17d for moving the conveyor 9b is provided, and a compression roll 11 is provided on the drive roll 17c with the net conveyor 19b interposed therebetween.
  • a feed roll 18 for feeding the produced heat-bondable nonwoven fabric 14 and a pair of drive rolls 19 a and 19 b for driving the take-up roll 14 are provided.
  • the short fibers are sent to a cotton feeding circulation duct communicating with the fiber inlets 3 and 4 after the fibers are opened mechanically by a weaving machine (not shown).
  • the fibers 15 fed into the fiber inlets 3 and 4 pass through the passage formed by the cylindrical screens 5a and 6a and the fiber circulation zones 7 and 8 by arrows C1, C2 and C2 in FIG. While being moved in the directions of C 3 and C 4 and in the directions of arrows D l, D 2, D 3 and D 4, they are mixed and circulated. As shown in Fig. 3, the circulated fibers are used as needle rolls 5b and 6b that rotate in the direction of arrow AA 'and a cylindrical screen that rotates in the direction of arrow BB'.
  • the web 16 is compressed by a web compression roll 11 and then supplied to a suction dryer 12 where the melting point is higher than the low melting point component and lower than the high melting point component, for example, from 90 ° C to 170 ° C.
  • the heat treatment at a temperature of ° C for 3 to 10 seconds, the low-melting-point component of the conjugate fiber is melted, and the high-melting-point component remains as it is, thereby forming a three-dimensional net peak.
  • the heat-bonding non-woven fabric 13 of the structure is formed and wound on the winding roll 14.
  • a method of passing through a sieve or a net made of various meshes may be used as a manufacturing method, and specifically, a method of passing through a screen. It is preferable to use a method of dispersing and accumulating the particles by making them fall.
  • the shape of the holes in the cylindrical screens 5a and 6a used for the air-laid device are usually horizontally long rectangles, but the vertical length is l ⁇ 3mm and the horizontal length is 15 ⁇ A 3 O mm rectangle is preferred.
  • the shape of the hole may be a circle, a triangle, a rectangle, a polygon, an ellipse, or the like in addition to a horizontally long rectangle.
  • the screen porosity is preferably 20% to 50%.
  • the nonwoven fabrics composed of the heat-adhesive conjugate fibers are heat-sealed at the intersections of the fibers by heat treatment with a suction dryer 112 after forming the web.
  • This heat treatment is performed by a suction dryer 1
  • the heating may be performed using a heating device such as a heat calender roll.
  • the basis weight of the obtained nonwoven fabric is not particularly limited, but is preferably about 10 to 1000 g / m 2 .
  • wiper about 10 when the filter; I 00 0 g / m 2 is preferred.
  • the apparent density of the non-woven fabric is not particularly limited, and is preferably about 0.017 to 0.10 g / cm 3 in consideration of force and texture.
  • a higher density nonwoven fabric can be obtained by subjecting the nonwoven fabric to post-processing such as hot pressing or hot roll processing.
  • the heat-bonding nonwoven fabric of the short-fiber nonwoven fabric of the present invention preferably has a thermocompression bonding area ratio of 10 to 30% when a heat calender roll is used to thermally fuse intersections of fibers.
  • a heat calender roll is used to thermally fuse intersections of fibers.
  • the short-fiber nonwoven fabric of the present invention can be used for various applications either alone or by lamination, sewing, heat fusion, and the like with other members.
  • the short-fiber nonwoven fabric of the present invention can be used for various applications either alone or by lamination, sewing, heat fusion, and the like with other members.
  • it when used as a member of pants-type disposable diapers, it can be used for parts that require both texture and strength, such as surface materials and back sheets.
  • other members such as an elastic member for tightly attaching the trunk and the legs, or the thermo-adhesive nonwoven fabric.
  • the heat-bondable nonwoven fabric can be laminated with other nonwoven fabrics, tissue papers, webs, films and the like, and used as a cover material for the front surface material ⁇ a cover material for the back surface material.
  • the short-fiber nonwoven fabric of the present invention can be used for wipers of furniture, cars, etc. by adhering various lubricants and the like.
  • the short fiber nonwoven fabric is folded or formed into a cylindrical shape, the thermoadhesive nonwoven fabric is wound into a tubular shape, or the thermoadhesive nonwoven fabric is rolled while being heated, and the layer is heated.
  • Post-processing such as molding into a fused cylinder and filter media can do.
  • the definition and measurement method of the physical property values and the like of the heat-bondable nonwoven fabric in this example are as follows.
  • the specific volume of the short-fiber nonwoven fabric in Table 1 was defined as follows and measured.
  • the basis weight and thickness of the nonwoven fabric were measured, and the calculated value was used as the value of the specific volume.
  • X represents the basis weight (gZm 2 ) of the nonwoven fabric
  • Y represents the thickness (cm) of the nonwoven fabric.
  • the size of the nonwoven fabric sample was 25 cm in length and 25 cm in width, and the number of fiber masses of the short fiber nonwoven fabric in Table 1 was defined as follows and measured.
  • the rayon fiber and the heat-fused fiber 15 passed through the opening machine are fed to the fiber feed ports 3 and 4 via the cotton feeding circulation duct, and the rotating cylindrical screens 5a and 6a are rotated.
  • the fiber was discharged from.
  • the discharged fibers were collected by a net conveyor 19a of a suction device 10 operated at 9 Om / min, and a web 16 was produced.
  • the physical properties of the obtained nonwoven fabric were a basis weight of 25 gZm 2 , a thickness of 3.6 mm, a specific volume of 144 cm 3 Zg, and a number of fiber clumps of 2.1 / "20 g.
  • the results are shown in Table 1. (Example 2)
  • the temperature of the first roll is 90 ° C
  • the temperature of the second roll is 20 ° C
  • the rotational speed ratio of the first roll to the second roll is 1: 4.
  • Stretching was performed between two rolls set at 5, to produce a drawn yarn having a helical crimp of 3 denier.
  • the drawn yarn having the helical crimp was cut by using a push-off type force cutter to produce a fiber having a fiber length of 5 mm.
  • the composite fiber was passed through a weaving machine, mechanically opened the fiber, and then supplied to an air-laid apparatus shown in Figs. 1 to 5 for processing. That is, the opened composite fiber 18 was fed into the fiber inlets 3 and 4 via the cotton circulation duct, and the fibers were discharged from the rotating cylindrical screens 5a and 6a.
  • the discharged fibers were collected by a net conveyor 9a having a suction device 10 operating at 9 Om / min to produce a web 16.
  • heat treatment at 150 ° C for 3 seconds using a suction dryer 12 to melt-bond the high-density polyethylene of the sheath component to produce a nonwoven fabric 13. It was wound on a take-up roll 14.
  • the physical properties of the obtained nonwoven fabric were as follows: basis weight 25 gZm 2 , thickness 4.6 mm, The volume was 18.5 cm 3 Zg, and the number of fiber masses was 1.2 pieces / 20 g. Table 1 shows the results.
  • a nonwoven fabric was produced under the same conditions as in Example 2 except that the fiber length of the conjugate fiber was set to 1 Omm.
  • a nonwoven fabric was produced under the same conditions as in Example 2 except that the fiber length of the conjugate fiber was changed to 15 mm.
  • a method for producing a nonwoven fabric using polyester short fibers and parallel type composite fibers is produced.
  • Number of crimps 14 Parallel type consisting of 30% by weight of 2 d / f X 5 mm polyester fiber having a zigzag crimp of 14 inches (2.54 cm), polypropylene component and high density polyethylene component 70% by weight of a 2 d / fx 5 mm conjugate fiber having a helical crimp of 6 crimps / inch (2.54 cm), which is a conjugate fiber, is fed into the opening machine and passed therethrough. After mechanically weaving the fibers, they were fed to the air-laid apparatus shown in Figs.
  • the opened polyester fiber and the parallel type composite fiber 15 were fed into fiber inlets 3 and 4 and the fibers were discharged from the rotating cylindrical screens 5a and 6a.
  • the discharged fibers were collected by a net conveyor 19a having a suction device 10 operated at 9 OmZmin to produce a web 16.
  • a suction drier 12 After compressing this tube with a tube compression roll 11, use a suction drier 12 to 150.
  • the high-density polyethylene of the sheath component was melt-bonded to produce a nonwoven fabric 13, which was taken up on a take-up roll 14.
  • Example 6 was the same as Example 6 except that the take-up speed was 4 17 mZm in, the undrawn yarn of 72 denier, the drawn yarn of 18 denier, and the number of spiral crimps was 6 mountains Z inches (2.54 cm). Fibers were produced under the same conditions.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • spinning was performed at a discharge rate of 450 g / min, and drawing was performed at a take-up speed of 919 mZmin, thereby producing 7.1-denier undrawn yarn.
  • the yarn was cooled by air cooling just below the spinneret.
  • the unstretched yarn is stretched between two rolls heated to 90 DC each by setting the rotation speed ratio of the first roll and the second roll to 1: 4, and the 2 denier stretched yarn is formed.
  • a finishing agent containing lauryl phosphate potassium salt as a main component to the drawn yarn using evening rolls, the yarn is passed through a box-type crimping machine to form a tow having 14 zigzag crimps per inch. Produced.
  • the tow contained moisture, it was dried at 90 ° C using a dryer, and then cut using a push-cut type cutlet to produce a fiber with a fiber length of 10 mm.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • the physical properties of the obtained nonwoven fabric were a basis weight of 25 g / m 2 , a thickness of 2.8 mm, a specific volume of 79 cm 3 Zg, and the number of fiber masses 4.5 Z 20 g. Table 1 shows the results.
  • a heat-fusible conjugate fiber was produced under the same conditions as in Example 8, except that 12 zig-zag crimps were applied per inch and the fiber length was set to 1 Omm.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • a fiber was produced under the same conditions as in Example 8 except that the yarn, 100 denier drawn yarn, 10 zigzag crimps per inch, and a fiber length of 25 mm were used.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • Discharge ratio of high crystalline polypropylene with MFR 1 1 g / 10 min (JISK7210 condition 14) as core component and high density polyethylene of MI-16.5 gXl 0 min (JISK7210 condition 4) as sheath component
  • a 5-denier undrawn yarn was produced by spinning at a discharge rate of 350 g / min and a take-up speed of 995 mZmin using a sheath-core composite spinneret having 5 to 5 holes and 621 holes. During spinning, the yarn was cooled by air cooling just below the spinneret.
  • the first roll temperature was set to 90 ° C
  • the second roll temperature was set to 20 ° C
  • the rotation speed ratio of the first roll to the second roll was 1: 1. 4.
  • Stretched between two rolls set at 5. After applying a finishing agent containing lauryl phosphate potassium salt as the main component to this drawn yarn with Tytrol, it is passed through a box-type crimping machine to produce 9 wavy ridges per inch (2.54 cm). A tow having a crimp was produced.
  • the drawn yarn having the wavy crimp was cut using a push-cut type cutter to produce a fiber having a fiber length of 5 mm.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • the physical properties of the obtained nonwoven fabric were 23 g in weight, 3.75 mm in thickness, specific volume of 163 cm 3 / g, and 18 pieces of fiber mass Z20 g. Table 1 shows the results.
  • the first roll temperature was set to 90 ° C
  • the second roll temperature was set to 20 ° C
  • the rotation speed ratio of the first roll to the second roll was 1: 1.
  • the film was drawn between two rolls set to 4.5 to produce a drawn yarn having a spiral crimp of 2 denier.
  • the extended drawn yarn having the helical crimp was cut using a push-cut type cutter to produce a fiber having a fiber length of 1 Omm.
  • the nonwoven fabric was produced under the same conditions as in Example 5.
  • Crystalline polyethylene terephthalate with intrinsic viscosity of 0.68 d1 Zg as the core component, and high-density polyethylene with M1 16.5 gZ10 min (JISK 7210 condition 4) as the sheath component at a discharge ratio of 5 to 5.
  • spinning was performed at a discharge rate of 450 gZmin, and drawing was performed at a drawing speed of 1035 mZmin to produce an undrawn yarn of 6,3 denier.
  • the yarn is cooled by air cooling just below the spinneret. Rejected.
  • the undrawn yarn was drawn between two rolls each heated to 90 ° C. with the rotation speed ratio of the first roll and the second roll set to 1: 3.3.
  • a finishing agent containing lauryl phosphate potassium salt as a main component to the drawn yarn with evening rolls
  • the yarn is passed through a box-type crimping machine to form a wavy crimp of 5 peaks per inch (2.54 cm).
  • the drawn yarn having the wavy crimp was cut using a push-type cutter to produce a fiber having a fiber length of 1 Omm.
  • the conditions for producing the nonwoven fabric were the same as in Example 5.
  • a nonwoven fabric was produced under the same conditions as in Example 2 except that the fiber length was 38 mm and a carding machine was used during the production of the web.
  • the physical properties of the obtained nonwoven fabric were a basis weight of 25 gZm 2 , a thickness of 0.9 mm, a specific volume of 36 cm 3 Zg, and the number of fiber masses was 0.9 / 20 g.
  • the nonwoven fabric Since it was a card nonwoven fabric, the nonwoven fabric had a smaller specific volume than the other examples.
  • a nonwoven fabric was produced under the same conditions as in Example 2 except that the fiber length was 30 mm.
  • the physical properties of the obtained nonwoven fabric are as follows: basis weight 25 g / n ⁇ , thickness 2.75 mm, The specific volume was 110 cm 3 Z g and the number of fiber mass was 8.5 Z 20 g. Although it is an airlaid nonwoven fabric, since the fiber length is longer than 25 mm, the fibers are easily entangled and the nonwoven fabric has a large number of fiber clumps. Therefore, the obtained non-woven fabric was poor in uniformity, had a feeling of graininess, noticeable white portions due to fiber mass, and non-uniform hue. Therefore, this nonwoven fabric was judged to have a poor texture. The results are shown in Table 1.
  • a commercially available disposable diaper having a substantially I-shaped planar cross section substantially similar to that of a railroad rail was used, and only the surface material of the disposable diaper was substantially replaced with the heat-adhesive nonwoven fabric described in Example 2.
  • the commercially available disposable diaper uses a polyethylene / polypropylene-based heat-fusible composite fiber staple, and has a surface material of a non-woven fabric in which intersections of the fibers are heat-sealed, and a water-absorbing material mainly composed of pulp and a highly water-absorbent resin. , And a diaper with a polyethylene film as the backing material. Only the surface material was cut off from the diaper with a knife. The heat-adhesive nonwoven fabric obtained in Example 3 was laminated on the same portion instead of the cut and removed surface material. Further, the heat-bonding nonwoven fabric and the nonwoven fabric near the remaining leg portions were heat-sealed.
  • the fiber length of the fibers used in the heat-bondable nonwoven fabric of the present invention is shorter than that of the nonwoven fabric by the card method, the number of fibers increases, so that the dispersion of fibers becomes less dense and dense, and a uniform nonwoven fabric is obtained.
  • the non-woven fabric is formed by dispersing the fibers and being deposited, the density and the air permeability are lower than those of the card nonwoven fabric in which the fibers are hooked and oriented.
  • the short-fiber nonwoven fabric of the present invention is formed by dispersing and depositing short fibers using short fibers to form a nonwoven fabric, so that the nonwoven fabric obtained by the force method is hindered in bulkiness by pulling the fibers. Thus, a bulky and soft nonwoven fabric can be obtained.
  • the short fiber nonwoven fabric of the present invention has a shorter fiber length than the card method nonwoven fabric, it is laminated in a randomly dispersed state, so that unevenness in the density of fibers is reduced and a uniform nonwoven fabric is obtained. Furthermore, since the nonwoven fabric is formed by dispersing the fibers in a three-dimensional direction and accumulating them, the density is lower than that of the card nonwoven fabric in which the fibers are hooked and oriented. Are better. Industrial applicability
  • the nonwoven fabric of the present invention is suitably used for applications that have a soft feeling and directly touch the body, for example, absorbent articles such as disposable diapers, napkins, incontinence pads, and breast milk pads.
  • absorbent articles such as disposable diapers, napkins, incontinence pads, and breast milk pads.
  • it has a large specific volume, is bulky and has good cushioning properties, so it can be used for bandages, eyeglasses, luncheon mats, cooking dishes, glassware packaging, fruits and vegetables, cut flowers, musical instruments and furniture. It is suitably used for applications that require buffering properties.
  • a non-woven fabric base having a non-woven fabric having a density gradient in the thickness direction can be used as a non-woven fabric material for filters such as liquid filters and air filters.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un tissu à fibres courtes non tissé dont les fibres courtes présentent une longueur de 3 à 25 mm et un titre de fil simple de 1 à 100 denier et sont dispersées et amassées, et dont les noeuds sont liés les uns aux autres. Des pelotes de fibres composées de fibres courtes et présentant un volume d'au moins 1 mm3 dans le tissu non tissé de 20 g sont au nombre maximal de cinq, et le tissu présente un volume massique de 40 à 200 cm3/g. Ce tissu non tissé peut donner un tissu gonflant suffisamment pour contribuer à la voluminosité due aux fibres et convient pour des articles hygièniques tels que des changes jetables, des serviettes, des coussins d'incontinence, des compresses pour le lait maternel, ou bien des essuie-tout.
PCT/JP1997/002073 1996-06-19 1997-06-16 Tissu a fibres courtes non tisse et article absorbant realise a l'aide de ce tissu WO1997048846A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP97926261A EP0906981A4 (fr) 1996-06-19 1997-06-16 Tissu a fibres courtes non tisse et article absorbant realise a l'aide de ce tissu
CA002256550A CA2256550A1 (fr) 1996-06-19 1997-06-16 Tissu a fibres courtes non tisse et article absorbant realise a l'aide de ce tissu
AU31077/97A AU3107797A (en) 1996-06-19 1997-06-16 Nonwoven short fibre fabric and absorbent article made by using same
JP50266798A JP3219250B2 (ja) 1996-06-19 1997-06-16 短繊維不織布及びそれを用いた吸収性物品

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Application Number Priority Date Filing Date Title
JP17996496 1996-06-19
JP8/179964 1996-06-19
JP8/351863 1996-12-11
JP35186396 1996-12-11

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JP2002526279A (ja) * 1998-10-05 2002-08-20 エスシーエー・ハイジーン・プロダクツ・アーベー 層を結合するための少なくとも一つの熱可塑性成分を含む吸収製品
US7131171B2 (en) 2002-09-25 2006-11-07 Kao Corporation Method for restoring bulkiness of nonwoven fabric
WO2008053741A1 (fr) * 2006-10-30 2008-05-08 Kinsei Seishi Co., Ltd. Filtres à air à rigidité élevée
JP2008533348A (ja) * 2005-02-04 2008-08-21 ドナルドソン カンパニー，インコーポレイティド エアゾールのセパレータおよび方法
US7560159B2 (en) 2004-02-23 2009-07-14 Teijin Fibers Limited Synthetic staple fibers for an air-laid nonwoven fabric
JP4792391B2 (ja) * 2003-06-16 2011-10-12 ハックル−キンバリー ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツング 改善された処理速度を有するエアレイド法
US9795906B2 (en) 2004-11-05 2017-10-24 Donaldson Company, Inc. Filter medium and breather filter structure
USRE47737E1 (en) 2004-11-05 2019-11-26 Donaldson Company, Inc. Filter medium and structure
WO2021132714A1 (fr) * 2019-12-27 2021-07-01 ユニ・チャーム株式会社 Non-tissé et article absorbant

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JP3404555B2 (ja) 1999-09-24 2003-05-12 チッソ株式会社 親水性繊維及び不織布、それらを用いた不織布加工品
US7888275B2 (en) * 2005-01-21 2011-02-15 Filtrona Porous Technologies Corp. Porous composite materials comprising a plurality of bonded fiber component structures
US20030018970A1 (en) * 2001-07-19 2003-01-23 Digeo, Inc. Object representation of television programs within an interactive television system
EP1504741A1 (fr) * 2003-08-07 2005-02-09 The Procter & Gamble Company Couche de collecte liée par une colle de latex avec des caractéristiques de manipulation de liquides insensible à la pression
EP1858618B1 (fr) * 2005-02-22 2009-09-16 Donaldson Company, Inc. Separateur d aerosol
GB201210851D0 (en) * 2012-06-19 2012-08-01 Eads Uk Ltd Extrusion-based additive manufacturing system
TW201420054A (zh) * 2012-11-21 2014-06-01 Kang Na Hsiung Entpr Co Ltd 吸濕用不織布及其製法
DE102014002060B4 (de) * 2014-02-18 2018-01-18 Carl Freudenberg Kg Volumenvliesstoffe, Verwendungen davon und Verfahren zu ihrer Herstellung
EP3133196B1 (fr) 2015-08-18 2020-10-14 Carl Freudenberg KG Non-tisse destine a donner du volume
JP7220020B2 (ja) 2017-01-06 2023-02-09 モリリン株式会社 混綿中綿

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002526279A (ja) * 1998-10-05 2002-08-20 エスシーエー・ハイジーン・プロダクツ・アーベー 層を結合するための少なくとも一つの熱可塑性成分を含む吸収製品
US7131171B2 (en) 2002-09-25 2006-11-07 Kao Corporation Method for restoring bulkiness of nonwoven fabric
JP4792391B2 (ja) * 2003-06-16 2011-10-12 ハックル−キンバリー ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツング 改善された処理速度を有するエアレイド法
US7560159B2 (en) 2004-02-23 2009-07-14 Teijin Fibers Limited Synthetic staple fibers for an air-laid nonwoven fabric
US10610813B2 (en) 2004-11-05 2020-04-07 Donaldson Company, Inc. Filter medium and breather filter structure
US11504663B2 (en) 2004-11-05 2022-11-22 Donaldson Company, Inc. Filter medium and breather filter structure
USRE49097E1 (en) 2004-11-05 2022-06-07 Donaldson Company, Inc. Filter medium and structure
US9795906B2 (en) 2004-11-05 2017-10-24 Donaldson Company, Inc. Filter medium and breather filter structure
USRE47737E1 (en) 2004-11-05 2019-11-26 Donaldson Company, Inc. Filter medium and structure
JP2008533348A (ja) * 2005-02-04 2008-08-21 ドナルドソン カンパニー，インコーポレイティド エアゾールのセパレータおよび方法
JP5344465B2 (ja) * 2006-10-30 2013-11-20 金星製紙株式会社 高剛性を有するエアフィルター
WO2008053741A1 (fr) * 2006-10-30 2008-05-08 Kinsei Seishi Co., Ltd. Filtres à air à rigidité élevée
WO2021132714A1 (fr) * 2019-12-27 2021-07-01 ユニ・チャーム株式会社 Non-tissé et article absorbant
WO2021131302A1 (fr) * 2019-12-27 2021-07-01 ユニ・チャーム株式会社 Non-tissé et article absorbant

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US20020016120A1 (en) 2002-02-07
CA2256550A1 (fr) 1997-12-24
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AU3107797A (en) 1998-01-07
JP3219250B2 (ja) 2001-10-15
EP0906981A1 (fr) 1999-04-07

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JPH1161614A (ja) 短繊維不織布

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