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WO2002000983A1 - Tissu non tisse fonctionnel - Google Patents

Tissu non tisse fonctionnel Download PDF

Info

Publication number
WO2002000983A1
WO2002000983A1 PCT/JP2001/005419 JP0105419W WO0200983A1 WO 2002000983 A1 WO2002000983 A1 WO 2002000983A1 JP 0105419 W JP0105419 W JP 0105419W WO 0200983 A1 WO0200983 A1 WO 0200983A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
fiber
nonwoven fabric
fusible
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2001/005419
Other languages
English (en)
Japanese (ja)
Inventor
Satoru Harigai
Hiromitsu Seike
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matsumoto Yushi Seiyaku Co Ltd
Original Assignee
Matsumoto Yushi Seiyaku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsumoto Yushi Seiyaku Co Ltd filed Critical Matsumoto Yushi Seiyaku Co Ltd
Publication of WO2002000983A1 publication Critical patent/WO2002000983A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D04H1/54—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
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/12—Processes in which the treating agent is incorporated in microcapsules

Definitions

  • the present invention relates to a nonwoven fabric excellent in flexibility, heat retention, water absorption or oil absorption, and more particularly to a nonwoven fabric suitable for clothing and bedding inner layer materials requiring flexibility.
  • Non-woven fabric with a heat-expandable mic mouth capsule has many voids inside, and is lightweight and excellent in cushioning, heat insulation, soundproofing, or water absorption. It is used as a mat or towel (see JP-A-58-136629 and JP-A-7-238451).
  • non-woven fabrics use a binder to fix the heat-expandable microcapsules to the non-woven fabric, and therefore lack flexibility and are required for flexibility, especially for clothing and bedding. Not suitable for inner layer material or towel.
  • a wet method in which a thermally expandable microcapsule dispersed in water or a solvent and a binder are impregnated or coated into a nonwoven fabric manufactured in advance. Not reasonable.
  • U.S. Pat. No. 3,676,288 discloses a method for producing a hydrophilic nonwoven fabric from hydrophilic fibers and thermally expandable microcapsules. However, this specification does not disclose a nonwoven fabric using a web-like fiber aggregate made of a heat-fusible fiber or a combination thereof with a non-heat-fusible fiber. Disclosure of the invention
  • An object of the present invention is to provide a novel function excellent in flexibility, heat retention, water absorption or oil absorption.
  • An object of the present invention is to provide a functional nonwoven fabric.
  • Another object of the present invention is to provide a nonwoven fabric obtained by a rational manufacturing method different from the wet method.
  • a feature of the present invention is that, during the nonwoven fabric manufacturing process, a heat-expandable micro force cell is sprayed on a heat-fusible fiber or a web-like fiber aggregate composed of a heat-fusible fiber and a non-heat-fusible fiber, followed by heat treatment.
  • a heat-expandable micro force cell is sprayed on a heat-fusible fiber or a web-like fiber aggregate composed of a heat-fusible fiber and a non-heat-fusible fiber, followed by heat treatment.
  • the heat fusible fiber that can be used in the present invention exhibits heat fusibility at a temperature of 50 to 50 ° C.
  • a heat-fusible fiber comprises a thermoplastic polymer having a melting point and / or a softening start temperature of 50 to 150 ° C.
  • a thermoplastic polymer for example, polyolefin and polyester can be preferably mentioned.
  • the melting point and / or the softening start temperature must be 150 ° C. or lower. Further, since it is required that the obtained nonwoven fabric does not re-melt with hot water or the like, the melting point and Z or the softening start temperature of the thermoplastic polymer must be 50 ° C or more, preferably 90 ° C or more. .
  • examples of polyolefins include (co) polymers containing olefins such as ethylene, propylene, butene 1 and pentene 1 as main components.
  • the polyester the requirements of the melting point and z or the softening start temperature are required. Any material can be used as long as it satisfies the range.
  • copolymerized polyesters using terephthalic acid, isophthalic acid, adipic acid, sebacic acid, etc. as the acid component, and ethylene glycol, propylene glycol, tetramethylene glycol, dimethylene glycol, etc. as the glycol component are preferable because they are inexpensive. .
  • the heat-fusible fiber can be a heat-fusible conjugate fiber composed of the above-mentioned thermoplastic polymer and a fiber-forming polymer having a higher melting point than the thermoplastic polymer.
  • the fiber-forming polymer for example, polypropylene and polyester are preferably used because they are inexpensive.
  • the conjugate type of the heat-fusible conjugate fiber is not particularly limited, and may be either a core-sheath type or a side-by-side type.
  • the heat-fusible conjugate fiber examples include a fiber in which a sheath is made of polyethylene and a core is made of polypropylene, a fiber in which a sheath is made of polyethylene, and a core is made of polyester (polyethylene terephthalate; hereinafter, referred to as PET), and copolymerized with PET.
  • PET polyethylene terephthalate
  • a typical example is a fiber obtained by compounding a polyester in a side-by-side type.
  • Other fibers constituting the web-like fiber aggregate that is, non-heat-fusible fibers that do not exhibit heat-fusibility at a temperature lower than 150 ° C, are natural fibers such as cotton and semi-synthetic fibers such as rayon.
  • Single or plural fibers such as synthetic fibers such as polypropylene, polyester and the like can be used. It is preferable to use a polyester fiber having a fineness of 5 to 15 denier and a crimp rate of 10 to 30% or a fiber imparted with heat storage heat retention, because the heat retention is further improved.
  • the fineness is smaller than 5 denier, the effect of improving the heat retention is small, and when the fineness is larger than 15 denier, the flexibility is easily impaired.
  • the crimping ratio is 10% or less, the effect of improving the heat retention is small, and when it is 30% or more, it becomes difficult to produce a uniform web-like fiber aggregate.
  • hydrophilic fibers such as rayon fiber, pulp fiber, cotton, and highly water-absorbing fiber are mixed as the non-heat-fusible fiber, the water absorption of the nonwoven fabric is further improved, so that it is suitable for toweling and bath mat.
  • lipophilic fibers such as polypropylene, polyester and polyurethane are used as non-heat-fusible fibers, the oil absorption of the nonwoven fabric can be improved, It is suitable for oil absorption sheets for foods.
  • a fiber having a fineness of 2 denier or less as a part of the non-heat-bonding fiber, because it is easy to hold the thermally expanded green microcapsules in the web-like fiber aggregate.
  • the mixing ratio of the heat-fusible fibers is usually 15% by weight or more, preferably 30% by weight or more. If the amount is less than 15% by weight, the heat-expandable microcapsules may fall off or the strength of the nonwoven fabric may be reduced.
  • the method for producing the web-like fiber aggregate from the heat-fusible fiber alone or a mixture of the heat-fusible fiber and the non-heat-fusible fiber is not particularly limited, but it is preferable to adopt a card method capable of high-speed processing. .
  • the heat-expandable microcapsule used in the present invention is a microcapsule containing a thermoplastic polymer as a shell and containing a volatile expanding agent which becomes gaseous at a temperature lower than the softening point of the polymer.
  • the particle size is preferably about 10 to 30 m, more preferably 15 to 25; m.
  • the thermally expandable microcapsules those which form microballoons having a particle size of about 50 to 150 zm by flapping at about 130 to 200 ° C. are preferably used.
  • thermoplastic polymer examples include homopolymers and copolymers of monomers such as biel chloride, vinylidene chloride, acrylonitrile, butyl acetate, styrene, and methyl methacrylate.
  • the softening point of such thermoplastic polymers is generally about 100-150 ° C.
  • Volatile swelling agents that become gaseous at temperatures below the softening point of the shell-forming thermoplastic polymer are volatile swelling agents contained within the microcapsules, such as propane, propylene, butene, normal butane, isobutane, Examples include low-boiling substances such as isopentane, neopentane, normal pentane, hexane, heptane, and petroleum ether.
  • the method for dispersing and dispersing the heat-expandable microcapsules in the web-like fiber aggregate is not particularly limited, but a hot-melt resin supply device used for nonwoven fabric production can be employed.
  • the amount of application depends on the basis weight of the nonwoven fabric, but usually 2 to 40 g a / m 2.
  • microcapsules containing fragrances, deodorants, repellents, ultraviolet absorbers, etc. can be sprayed, and by doing so, it is possible to provide additional functions .
  • a web-like fiber aggregate is laminated thereon and heat-treated to obtain a nonwoven fabric having an excellent appearance. It is preferable to laminate a web-like fiber aggregate on the web.
  • a heat treatment method for example, a dryer such as a hot air dryer or a suction drum dryer, or a heating roll such as a flat calender or an emboss roll can be used. It is particularly preferable to use a hot air dryer because a nonwoven fabric having excellent flexibility can be obtained.
  • Mp 1 2 5 t polyethylene sheath component of the polyethylene terephthalate (PET) as a core component, over fineness 2 d, the heat-fusible composite fiber having a fiber length of 5 l mm a roller card, the basis weight 5 0 gZm 2
  • a web having a basis weight of 20 g / m 2 of the heat-fusible conjugate fiber was laminated, and treated with a hot-air drier at 150 ° C. for 1 minute to obtain a nonwoven fabric.
  • Table 1 shows the performance of the obtained nonwoven fabric.
  • Example 1 was the same as Example 1 except that 50 parts by weight of the same heat-fusible conjugate fiber used in Example 1 as the web, 50 parts by weight of polyester (PET) fiber having a fineness of 1.3 d and a fiber length of 38 mm were used. Similarly, a nonwoven fabric was obtained. Table 1 shows the obtained results.
  • Example 1 Since the same thermally expandable microcapsules used in Example 1 were sprayed at 20 g / m2, Outside, a nonwoven fabric was obtained in the same manner as in Example 2. Table 1 shows the obtained results.
  • Example 1 40 parts by weight of the same heat-fusible conjugate fiber used in Example 1 as the web, 20 parts by weight of the same polyester fiber used in Example 2, fineness 6 d, fiber length 64 mm, crimp rate 18%
  • a non-woven fabric was obtained in the same manner as in Example 1 except that 40 parts by weight of the polyester (PET) fiber was used. Table 1 shows the obtained results.
  • a chemical pound polypropylene nonwoven fabric with a basis weight of 7 O gZm 2 is immersed in an aqueous dispersion of 20 parts by weight of the same heat-expandable microcapsules, 20 parts by weight of an acrylic ester-based binder, and 60 parts by weight of water as used in Example 1. Then, the mixture was squeezed so that the pickup ratio became 70% by weight, and then treated with a hot air drier at 150 ° C. for 3 minutes to obtain a non-woven fabric containing 10 g of Zm 2 capsules having a thermally expanded micro-mouth. Table 1 shows the obtained results.
  • a nonwoven fabric was obtained in the same manner as in Example 1, except that the thermally expandable microcapsules were not sprayed. Table 1 shows the obtained results.
  • a nonwoven fabric obtained by heat-treating the web used in Example 4 having a basis weight of 70 g / m 2 with a hot air drier at 150 for 1 minute was used.20 parts by weight of the same thermally expandable microcapsule cell as used in Example 1. Immersion in an aqueous dispersion of 20 parts by weight of an acrylester-based binder and 60 parts by weight of water, squeezed so that the pickup rate becomes 70% by weight, and then treated with a hot air drier for 3 minutes at 150 ° C. Then, a nonwoven fabric containing 10 g / m 2 of the thermal expansion microcapsules was obtained. Table 1 shows the obtained results. Test No. Heat retention rate (%) Bending degree (g)
  • a nonwoven fabric was obtained in the same manner as in Example 1, except that the same heat-fusible conjugate fiber as used in Example 1 was used in an amount of 30 parts by weight, the fineness was 2d, and the fiber length was 51 mm. Table 2 shows the obtained results.
  • a non-woven fabric was obtained in the same manner as in Comparative Example 3, except that the same web having a basis weight of 70 gZm 2 as used in Example 5 was used. Table 2 shows the results.
  • a nonwoven fabric was obtained in the same manner as in Example 5, except that the thermally expandable microcapsules were not sprayed. Table 2 shows the results. Table 2
  • the nonwoven fabric was cut into 40 mm ⁇ 40 mm, immersed in tap water at 20 ° C. for 20 minutes, allowed to stand at room temperature for 20 seconds, weighed, and the amount of water absorption per unit area of the nonwoven fabric was determined.
  • a non-woven fabric was obtained in the same manner as in Example 1, except that 30 parts by weight of the same heat-fusible conjugate fiber as used in Example 1 and 70 parts by weight of a polypropylene fiber having a fineness of 2 d and a fiber length of 51 mm were used. Table 3 shows the obtained results.
  • a nonwoven fabric was obtained in the same manner as in Comparative Example 3, except that the same web as that used in Example 6 was used with a basis weight of 70 gZm 2 . Table 3 shows the results.
  • a nonwoven fabric was obtained in the same manner as in Example 6, except that the thermally expandable microcapsules were not sprayed. Table 3 shows the results.
  • Larose method Measure the saturated oil absorption of a 9 cm 2 sample using a contact oil absorption tester. It was converted to g per 1 m 2 and described.
  • Measurement method Samples and utensils were stored in a constant temperature room at a temperature of 25 ° C and a humidity of 65% for 24 hours or more, and then subjected to measurement. Oil (salad oil (manufactured by Nisshin Oil Co., Ltd.)) was placed in a vat large enough to immerse the sheet, and a sheet of known weight and area was immersed for 3 minutes. Next, the mixture was allowed to stand on a 10-mesh wire net and drained for 1 minute, weighed, and the difference from the initial weight was divided by the area of the sheet to convert to oil absorption per lm 2 .
  • Oil salad oil (manufactured by Nisshin Oil Co., Ltd.)
  • the heat-expandable microcapsules are sprayed on the heat-fusible fibers or the web-like fiber aggregate composed of the heat-fusible fibers and the non-heat-fusible fibers, and then heat-treated.
  • a functional nonwoven fabric having excellent flexibility, heat retention, P-water or oil absorption properties can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

Tissu non tissé fonctionnel qui est produit selon un procédé consistant à disperser des micro-capsules thermiquement dilatables sur un agrégat de fibres sous forme de bande qui comporte des fibres thermofusibles et éventuellement des fibres non fusibles, puis à soumettre un produit contenant l'agrégat de fibres et les micro-capsules à un traitement thermique. Ledit tissu non tissé fonctionnel possède d'excellentes propriétés pour ce qui est de la douceur, de la rétention de chaleur et de l'absorption d'eau ou d'huile.
PCT/JP2001/005419 2000-06-26 2001-06-25 Tissu non tisse fonctionnel Ceased WO2002000983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000232264A JP2005097749A (ja) 2000-06-26 2000-06-26 機能性不織布
JP2000-232264 2000-06-26

Publications (1)

Publication Number Publication Date
WO2002000983A1 true WO2002000983A1 (fr) 2002-01-03

Family

ID=18724973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005419 Ceased WO2002000983A1 (fr) 2000-06-26 2001-06-25 Tissu non tisse fonctionnel

Country Status (2)

Country Link
JP (1) JP2005097749A (fr)
WO (1) WO2002000983A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291404A (ja) * 2005-04-13 2006-10-26 Kinsei Seishi Kk 吸湿性不織布
WO2008029428A1 (fr) * 2006-09-06 2008-03-13 Fintex & Partners Italia S.P.A. Bande absorbante, son procédé d'obtention et article absorbant l'utilisant
CN103952860A (zh) * 2014-05-08 2014-07-30 浙江金三发非织造布有限公司 一种无纺布的生产工艺

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006336167A (ja) * 2005-06-03 2006-12-14 Toyota Motor Corp 繊維構成体、防音材料及びその製造方法
JP6305330B2 (ja) * 2014-12-25 2018-04-04 ユニ・チャーム株式会社 不織布及び不織布の製造方法
CN116695262B (zh) * 2023-05-04 2024-04-12 湖北民族大学 一种串珠结构微纳米纤维及其制备方法与应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS534789A (en) * 1976-05-12 1978-01-17 Honshu Paper Co Ltd Adsorptive nonnwoven fabrics and its manufacture
JPS62250260A (ja) * 1986-04-24 1987-10-31 株式会社クラレ 不織布およびその製造法
JPH01178224A (ja) * 1988-01-05 1989-07-14 Kanai Hiroyuki 不織布クリーナー
JPH07238451A (ja) * 1994-02-22 1995-09-12 Nippon Zeon Co Ltd 不織布用バインダー組成物及び不織布の製法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS534789A (en) * 1976-05-12 1978-01-17 Honshu Paper Co Ltd Adsorptive nonnwoven fabrics and its manufacture
JPS62250260A (ja) * 1986-04-24 1987-10-31 株式会社クラレ 不織布およびその製造法
JPH01178224A (ja) * 1988-01-05 1989-07-14 Kanai Hiroyuki 不織布クリーナー
JPH07238451A (ja) * 1994-02-22 1995-09-12 Nippon Zeon Co Ltd 不織布用バインダー組成物及び不織布の製法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006291404A (ja) * 2005-04-13 2006-10-26 Kinsei Seishi Kk 吸湿性不織布
WO2008029428A1 (fr) * 2006-09-06 2008-03-13 Fintex & Partners Italia S.P.A. Bande absorbante, son procédé d'obtention et article absorbant l'utilisant
CN103952860A (zh) * 2014-05-08 2014-07-30 浙江金三发非织造布有限公司 一种无纺布的生产工艺

Also Published As

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