WO2020138029A1 - Chaîne de tricotage et produit tricoté - Google Patents

Chaîne de tricotage et produit tricoté Download PDF

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Publication number
WO2020138029A1
WO2020138029A1 PCT/JP2019/050496 JP2019050496W WO2020138029A1 WO 2020138029 A1 WO2020138029 A1 WO 2020138029A1 JP 2019050496 W JP2019050496 W JP 2019050496W WO 2020138029 A1 WO2020138029 A1 WO 2020138029A1
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WO
WIPO (PCT)
Prior art keywords
knitting
string
artificial leather
fibers
nonwoven fabric
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/JP2019/050496
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English (en)
Japanese (ja)
Inventor
真人 割田
道憲 藤澤
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2020563282A priority Critical patent/JP7356457B2/ja
Publication of WO2020138029A1 publication Critical patent/WO2020138029A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof

Definitions

  • the present invention relates to a knitting cord including an artificial leather substrate and a knit product manufactured using the same.
  • artificial leather including an artificial leather substrate including a nonwoven fabric and a polymeric elastic body impregnated into the nonwoven fabric has been known.
  • Artificial leather is widely used as a surface material for footwear, bags, clothes, furniture and the like.
  • Patent Document 2 discloses an artificial leather having a silver-tone resin layer on one surface of an artificial leather substrate including a nonwoven fabric containing fibers having a denier of 0.3 or less and a polymeric elastic body impregnated into the nonwoven fabric.
  • a woven or knitted fabric using a leather-like yarn that is cut into a thickness of 0.5 to 1 mm and a width of 1 to 5 mm.
  • knit has been widely used as a material for uppers such as sports shoes.
  • Materials for uppers for sports shoes are required to have a high degree of functionality depending on their use.
  • the material for the upper using a knit can partially exhibit the functionality required by partially changing the structure of the knitted fabric.
  • Patent Document 6 discloses a leather-like yarn having a silver surface on one surface of a substrate composed of ultrafine fibers and an elastic polymer.
  • the string having such a silver surface has a large frictional resistance when the strings rub against each other at the time of knitting, so that the string is likely to be cut, and its practicality is low.
  • the string obtained by shredding the artificial leather substrate has been known.
  • knitting operation by forming a new loop on the preformed loop and passing through it, or hooking the string on the hook of the knitting needle in inlay knitting
  • the cords were sometimes rubbed and cut.
  • Another aspect of the present invention is a knit product including any one of the above knitting strings.
  • Such a knit product has a novel design that retains fullness and suppleness.
  • a knitting cord including an artificial leather substrate that is unlikely to cause cutting in the knitting process, and a knit product manufactured using the same.
  • FIG. 1 is a schematic view of a knit product including the knitting cord of the embodiment.
  • FIG. 2 is a schematic diagram of a knit product using the knitting cord of the embodiment as an inlay knitting element.
  • FIG. 3 is a graph in which the results of Examples and Comparative Examples are plotted.
  • Polybutylene succinate adipate, polyhydroxybutyrate-polyhydroxyvalerate resin and other aliphatic polyesters nylon 6, nylon 66, nylon 10, nylon 11, nylon 12, nylon 6 and 12 nylon; polypropylene, polyethylene, Fibers such as polybutene, polymethylpentene, and polyolefin such as chlorine-based polyolefin can be used. These may be used alone or in combination of two or more.
  • the ultrafine fibers forming the non-woven fabric may contain a colorant such as a dye or a pigment, an ultraviolet absorber, a heat stabilizer, a deodorant, a fungicide, and various stabilizers, if necessary.
  • the average fineness of the ultrafine fibers forming the non-woven fabric is 0.5 dtex or less, 0.0001 to 0.5 dtex, and further 0.001 to 0.2 dtex, which is knit knitting having both flexibility and fullness. It is preferable in that a cord can be obtained.
  • the ultrafine fibers forming the non-woven fabric form a fiber bundle of ultrafine fibers derived from the ultrafine fiber generation type fibers from the viewpoint of obtaining a knitting cord excellent in breaking strength.
  • the number of ultrafine fibers forming the fiber bundle is not particularly limited, but it is preferably 5 to 70, and more preferably 10 to 50 from the viewpoint of excellent balance between flexibility and breaking strength.
  • the fiber length of the ultrafine fibers forming the non-woven fabric is intentionally cut after spinning, for example, even if the short fibers have a fiber length of about 3 to 100 mm, long fibers that are not intentionally cut after spinning (continuous Although it may be a fiber), a long fiber is preferable because the breaking strength of the string is likely to be high due to the high degree of entanglement and a high fullness is obtained.
  • the fiber length of the long fiber before it is made into an ultrafine fiber is preferably 100 mm or more, and can be technically manufactured, and unless it is inevitably cut in the manufacturing process, it is several meters or several meters.
  • the fiber length may be 100 m, several km or more.
  • polyurethane examples include polyurethane, (meth)acrylic polymer elastic body, acrylonitrile polymer elastic body, olefin polymer elastic body, polyester elastic body, and the like. Can be mentioned. Of these, polyurethane is particularly preferable because it has excellent abrasion resistance.
  • a polymer elastic material is, as described later, in a state of emulsion or solution, a nonwoven fabric which is an entangled body of ultrafine fibers, or a nonwoven fabric which is an entangled body of ultrafine fiber generating fibers for forming ultrafine fibers. After impregnation, it is applied by drying or by wet coagulation with a poor solvent.
  • nonwoven fabric/polymer elastic body of the nonwoven fabric, which is an entangled body of ultrafine fibers, and the polymer elastic body is 99/1 to 55/45, and further 95/5 to 60/40. It is preferable because it is excellent in balance with softness.
  • the artificial leather substrate of the present embodiment preferably contains a lubricant for imparting lubricity to the surface of the knitting cord and reducing frictional resistance against a knitting needle when knitting.
  • a lubricant for imparting lubricity to the surface of the knitting cord and reducing frictional resistance against a knitting needle when knitting.
  • the lubricant include, for example, silicone-based softeners such as amino-modified silicone-based, alkyl silicone-based, amide-modified silicone-based, and epoxy-modified silicone-based softeners, and vegetable waxes such as persimmon wax, carnauba wax, and candelilla wax; Animal waxes such as beeswax and wool wax; mineral waxes such as montan wax; petroleum waxes such as paraffin wax and microstarine wax; polyethylene wax, Fischer-Tropsch wax; synthetic waxes such as fatty acid ester waxes Silk protein etc. are mentioned.
  • silicone-based softeners are preferable because they can easily balance the friction
  • the content ratio of the lubricant contained in the string for knitting is 0.01 to 3% by mass, and further 0.1 to 2% by mass, so that the friction resistance of the surface during knitting is sufficient. It is preferable from the standpoint that the stepability of knitting is improved by reducing If the content of the lubricant contained in the knitting cord is too high, the breaking strength tends to be low and the processability tends to be low.
  • the artificial leather substrate of the present embodiment may include a reinforcing material for a polymeric elastic body that is provided as a finishing agent after the application of the polymeric elastic body described above in order to improve the strength as a knitting cord.
  • a reinforcing agent include polyurethane, (meth)acrylic polymer elastic body, acrylonitrile polymer elastic body, olefin polymer elastic body, polyester elastic body and the like.
  • the acrylic polymer elastic body is particularly preferable because it has excellent reinforcing properties and flexibility.
  • Such a reinforcing agent is added in the form of an emulsion or a solution by impregnating a non-woven fabric which is an entangled body of ultrafine fibers, and then drying or wet coagulating with a poor solvent.
  • the reinforcing agent is preferably impregnated between the fiber bundles of the ultrafine fibers to enhance the reinforcing effect.
  • the content ratio of the reinforcing agent contained in the knitting braid is 0.01 to 5% by mass, and further 0.5 to 3% by mass, so that the strength of the knitting braid is increased. It is preferable from the viewpoint of improving the processability of the coating. If the content of the reinforcing agent contained in the knitting cord is too high, the flexibility tends to decrease and the processability tends to decrease.
  • a nonwoven fabric that is an entangled body of ultrafine fibers first manufacture a web of sea-island fibers.
  • a web can be produced, for example, by the spunbond method.
  • the molten polymer for forming the sea-island type fibers discharged from the spinneret is drawn and drawn by a suction device such as an air jet nozzle at a speed of 2000 to 5000 m/min, and then opened. It is manufactured by depositing it on a moving collection surface while making it fine.
  • the drawn sea-island type fiber preferably has a fineness of 1 to 4 dtex, more preferably 2 to 3 dtex.
  • the web thus obtained is laminated in a plurality of layers using a known web laminating apparatus (for example, a cross lap equipment) to form a stacked web, and the stacked web is three-dimensionally entangled to form sea-island type fibers.
  • a web entangled sheet is obtained.
  • the three-dimensional entanglement treatment of the stacked webs is performed by a needle punching treatment, a high-pressure water stream, or the like.
  • the needle punching treatment for example, it is preferable to perform the needle punching treatment under the condition that at least one barb penetrates from both sides simultaneously or alternately.
  • the punching density is not particularly limited, but is preferably in the range of 300 to 5000 punch/cm 2 , and more preferably in the range of 500 to 3500 punch/cm 2 . In this way, the web entangled sheet is obtained.
  • the artificial leather substrate In the production of the artificial leather substrate, either before or after the sea-island type fibers are made into ultrafine fibers, or both, for the purpose of preventing the fine fibers from slipping off, improving peeling strength, and imparting morphological stability and solidity.
  • a polymeric elastic body is impregnated into the internal voids of a web entangled sheet or a nonwoven fabric which is an entangled body of ultrafine fibers after being made into ultrafine fibers.
  • a method of applying an emulsion or solution of a polymer elastic body to a nonwoven fabric which is a entangled body of web entangled sheets or ultrafine fibers after ultrafine fiber formation, by a dip nip, and then coagulating by a dry or wet coagulation method.
  • a nonwoven fabric which is a entangled body of web entangled sheets or ultrafine fibers after ultrafine fiber formation, by a dip nip, and then coagulating by a dry or wet coagulation method.
  • the ultrafine fiber treatment is an entangled body of ultrafine fibers obtained by dissolving or decomposing and removing the resin forming the sea component by subjecting the web entangled sheet to hot water heating with water, an alkaline aqueous solution, an acidic aqueous solution, or the like. This is a step of forming a non-woven fabric.
  • the thickness of the artificial leather substrate is adjusted by slicing into multiple pieces in a direction perpendicular to the thickness direction or grinding as necessary. Further, by buffing the surface, a suede-like surface which is a napped surface may be formed.
  • the buffing is preferably performed using, for example, sandpaper or emery paper having a count of 120 to 600. It is preferable to have a suede-like surface because the frictional resistance to the knitting needle is particularly low in the knitting process.
  • the thickness of the artificial leather substrate thus obtained is, for example, 0.4 to 3.0 mm, and particularly preferably 0.5 to 2.0 mm.
  • the apparent density of the artificial leather substrate is 0.2 to 0.7 g/cm 3 , and further 0.3 to 0.6 g/cm 3, which is excellent in balance between fullness and supple texture. It is preferable from the point of view.
  • the lubricant can be applied to the entire artificial leather substrate.
  • the lubricant dispersion is preferably prepared so that the lubricant dispersion has a predetermined concentration, for example, about 0.1 to 20% by mass as the solid content of the dispersion.
  • the artificial leather substrate thus obtained is cut into a string with a slitting machine having a slit width of, for example, 0.5 to 3 mm, preferably 0.8 to 2 mm.
  • a string for knitting which is a string including the artificial leather substrate, is manufactured.
  • the breaking elongation (%) of the knitting cord is preferably 50 to 300%, and more preferably 60 to 250% from the viewpoint that it becomes difficult to cut in the knitting process.
  • the knitting cord of the present embodiment is a cord that retains a sense of fulfillment and suppleness and is excellent in knitting processability. By manufacturing a knitted product using such a knitting cord, it is possible to obtain a knit product having a new design while maintaining a sense of fulfillment and suppleness.
  • Examples 1 to 6, 9 to 13 and Comparative Examples 1 to 6 Water-soluble PVA as the sea component, PET with an isophthalic acid modification degree of 6 mol% as the island component, and the number of islands per fiber is 25 islands, so that the sea component/island component is 25/75 (mass ratio)
  • a melt-composite spinning die a sea-island type filament was discharged from the die at 260°C. Then, the ejector pressure was adjusted so that the spinning speed was 4000 m/min, the sea-island type continuous fibers having an average fineness of 2.5 dtex were collected on the net, and the continuous fiber web having a basis weight of 30 to 40 g/m 2 was collected.
  • Friction resistance of string (S) The friction resistance (S) of the obtained string was measured as follows. A test piece was prepared by cutting the string to be measured into 10 cm and 30 cm in the longitudinal direction. Then, a 10 cm string was bent at the central portion and both ends of the string were aligned, and the string was set on the upper chuck of a tensile tester in which the chuck distance was set to 200 mm so that a string loop having a length of about 3 cm was formed. Next, one end of a 30 cm string was set on the lower chuck, the other end was passed through the string loop set on the upper chuck, and then a 10 g weight was hung.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Knitting Of Fabric (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

L'invention concerne une chaîne de tricotage et un produit tricoté fabriqué à l'aide de celle-ci. Cette chaîne de tricotage contient un substrat de cuir artificiel, et comprend également : un tissu non-tissé qui est un corps enchevêtré de fibres ultra-fines ayant une finesse moyenne de 0,5 dtex ou moins; et un corps élastique polymère imprégné dans le tissu non-tissé. La chaîne de tricotage satisfait 10 ≥ T ≥ 4,6S + 0,5 et S < 0,18, où T est une résistance à la rupture (kg/cm) de la chaîne et S est une résistance au frottement (kg) entre des chaînes. La chaîne est de préférence utilisée dans un élément tricoté à incrustation ou un élément tricoté à point jersey d'un article tricoté.
PCT/JP2019/050496 2018-12-28 2019-12-24 Chaîne de tricotage et produit tricoté Ceased WO2020138029A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020563282A JP7356457B2 (ja) 2018-12-28 2019-12-24 ニット編み用紐及びニット製品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018247504 2018-12-28
JP2018-247504 2018-12-28

Publications (1)

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WO2020138029A1 true WO2020138029A1 (fr) 2020-07-02

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PCT/JP2019/050496 Ceased WO2020138029A1 (fr) 2018-12-28 2019-12-24 Chaîne de tricotage et produit tricoté

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JP (1) JP7356457B2 (fr)
TW (1) TW202039949A (fr)
WO (1) WO2020138029A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143279U (fr) * 1981-03-03 1982-09-08
WO2008120702A1 (fr) * 2007-03-30 2008-10-09 Kuraray Co., Ltd. Feuille ressemblant à du cuir et possédant un apprêt granuleux, et procédé permettant de fabriquer cette feuille
JP2012046849A (ja) * 2010-08-27 2012-03-08 Kuraray Co Ltd スエード調皮革様シートの製造方法
JP2012207353A (ja) * 2011-03-30 2012-10-25 Kuraray Co Ltd 皮革様基材、その製造方法、及び該皮革様基材を用いた紐

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143279U (fr) * 1981-03-03 1982-09-08
WO2008120702A1 (fr) * 2007-03-30 2008-10-09 Kuraray Co., Ltd. Feuille ressemblant à du cuir et possédant un apprêt granuleux, et procédé permettant de fabriquer cette feuille
JP2012046849A (ja) * 2010-08-27 2012-03-08 Kuraray Co Ltd スエード調皮革様シートの製造方法
JP2012207353A (ja) * 2011-03-30 2012-10-25 Kuraray Co Ltd 皮革様基材、その製造方法、及び該皮革様基材を用いた紐

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TW202039949A (zh) 2020-11-01
JP7356457B2 (ja) 2023-10-04
JPWO2020138029A1 (ja) 2021-11-18

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