Classifications

• • 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
  • D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
  • D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
  • A47C27/22—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with both fibrous and foamed material inlays
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
  • A47C31/001—Fireproof means
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/02—Seat parts
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
  • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
  • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

• the present invention relates to a fire-resistant fabric and a seat each having excellent flame retardancy, fire resistance, strength, comfortability, and formability.
• a cushion of this type generally has fire-resistant fabric called an FBL (Fire Blocking Layer) laminated on a material having elastic properties, such as urethane.
• FBL Fire Blocking Layer
• PTL 1 has proposed nonwoven fabric using a flame-resistant fiber.
• nonwoven fabric has a problem in that the fabric is so hard that it makes the person who seats on the fabric feel uncomfortable, and it is difficult to seat on the fabric for a long time.
• an object of the invention is to provide a fire-resistant fabric and a seat each having excellent flame retardancy, fire resistance, strength, comfortability, and formability.
• the present inventors have conducted extensive and intensive studies with a view toward achieving the above-mentioned object. As a result, it has been found that, by appropriately selecting the type of the fiber constituting the fire-resistant fabric and the cloth structure and the like, there can be obtained a fire-resistant fabric having excellent flame retardancy, fire resistance, strength, comfortability, and formability, and further extensive and intensive studies have been made, and the present invention has been completed.
• a fire-resistant fabric comprising a flame-retardant fiber having an LOI of 26 or more, as measured in accordance with JIS L 1091 (1999) E-2 method, wherein the fire-resistant fabric has a bending resistance of 95 mm or less in the warp direction or in the weft direction, as measured by the method prescribed in JIS L 1096 (2010) A method (45° cantilever method)".
• the fire-resistant fabric has a circular knitted structure. It is preferred that the fire-resistant fabric is formed from double knit. It is preferred that the fire-resistant fabric contains a meta-aramid fiber and a para-aramid fiber and/or an oxidized polyacrylonitrile fiber as the flame-retardant fiber.
• the fire-resistant fabric of the invention preferably has a weight per unit of 400 g/m 2 or less.
• the fire-resistant fabric preferably has an air permeability of 90 cm 3 /cm 2 •sec or more.
• the fire-resistant fabric preferably has an elongation of 8% or more, as measured in accordance with JIS 1096 (2010) D method (constant load method) Cut strip method, at a distance between two gage marks: 200 mm, and at a constant load: 4.9 N, and has a stretch modulus of 70% or more, as measured in accordance with JIS L 1096 (2010) E method (constant load method) Cut strip method at a constant load: 0.89 N, with repeating loading: once.
• the fire-resistant fabric preferably has a burst strength of 1,000 kPa or more, as measured in accordance with JIS L 1096 (2010) A method (Mullen method).
• a seat having the fire-resistant fabric sandwiched between face fabric and a cushioning material is provided.
• the fire-resistant fabric is fixed to the face fabric by sewing. It is preferred that the seat is for use in aircraft, vehicle, rolling stock, vessel, hospital, nursing home, theater, or interior decoration.
• a fire-resistant fabric and a seat each having excellent flame retardancy, fire resistance, strength, comfortability, and formability.
• the flame-retardant fiber used in the invention is a flame-retardant fiber having an LOI of 26 or more, as measured in accordance with JIS L 1091 (1999) E-2 method.
• wholly aromatic polyamide fibers such as a meta-type wholly aromatic polyamide fiber (meta-aramid fiber) and a para-type wholly aromatic polyamide fiber (para-aramid fiber), a polybenzimidazole fiber, a polyimide fiber, a polyamide-imide fiber, a polyether imide fiber, a polyarylate fiber, a polyparaphenylenebenzobisoxazole fiber, a novoloid fiber, a flame-retardant acrylic fiber, a polychlal fiber, a flame-retardant polyester fiber, a flame-retardant cotton fiber, a flame-retardant rayon fiber, a flame-retardant vinylon fiber, a flame-retardant wool fiber, and the like can be used individually or in combination.
• a meta-type wholly aromatic polyamide fiber metal-aramid fiber
• para-aramid fiber para-type wholly aromatic polyamide fiber
• a polybenzimidazole fiber a polyimide fiber, a polyamide-
• the flame-retardant fiber has a melting point of 300°C or higher.
• examples of such fibers include wholly aromatic polyamide fibers (a meta-type wholly aromatic polyamide fiber and a para-type wholly aromatic polyamide fiber), a polybenzimidazole fiber, a polyimide fiber, a polyamide-imide fiber, and an oxidized polyacrylonitrile fiber.
• These flame-retardant fibers may contain an additive, such as an antioxidant, an ultraviolet light absorber, a heat stabilizer, a flame retardant, titanium oxide, a coloring agent, or inert fine particles, in such an amount that the effects aimed at by the invention are not sacrificed.
• an additive such as an antioxidant, an ultraviolet light absorber, a heat stabilizer, a flame retardant, titanium oxide, a coloring agent, or inert fine particles, in such an amount that the effects aimed at by the invention are not sacrificed.
• the flame-retardant fiber has an LOI of 26 or more and a melting point of 400°C or higher.
• examples of such fibers include wholly aromatic polyamide fibers (a meta-type wholly aromatic polyamide fiber and a para-type wholly aromatic polyamide fiber).
• the meta-type wholly aromatic polyamide fiber is a fiber formed from a polymer in which 85 mol% or more of the repeating units are m-phenyleneisophthalamide.
• the meta-type wholly aromatic polyamide may be a copolymer containing a third component in an amount in the range of less than 15 mol%.
• the meta-type wholly aromatic polyamide can be produced by a known interfacial polymerization method, and there is preferably used the meta-type wholly aromatic polyamide having, in terms of the degree of polymerization of the polymer, an intrinsic viscosity (I.V.) in the range of from 1.3 to 1.9 dl/g, as measured in the form of an N-methyl-2-pyrrolidone solution of the polymer having a concentration of 0.5 g/100 ml.
• I.V. intrinsic viscosity
• the meta-type wholly aromatic polyamide may contain an alkylbenzenesulfonic acid onium salt.
• alkylbenzenesulfonic acid onium salts include compounds, such as tetrabutylphosphonium hexylbenzenesulfonate, tributylbenzylphosphonium hexylbenzenesulfonate, tetraphenylphosphonium dodecylbenzenesulfonate, tributyltetradecylphosphonium dodecylbenzenesulfonate, tetrabutylphosphonium dodecylbenzenesulfonate, and tributylbenzylammonium dodecylbenzenesulfonate.
• tetrabutylphosphonium dodecylbenzenesulfonate or tributylbenzylammonium dodecylbenzenesulfonate because they are easily available and have excellent thermal stability as well as high solubility in N-methyl-2-pyrrolidone.
• the amount of the alkylbenzenesulfonic acid onium salt contained is preferably 2.5 mol% or more, preferably in the range of from 3.0 to 7.0 mol%, based on the mole of the poly-m-phenyleneisophthalamide.
• an aromatic diamine component different from the main constituent units of the repeating structure, or an aromatic dicarboxylic acid halide component can be copolymerized as a third component with the aromatic polyamide skeleton so that the amount of the third component becomes 1 to 10 mol%, based on the total mole of the repeating structural units of the aromatic polyamide: -(NH-Ar1-NH-CO-Ar1-CO)- Formula (1) wherein Ar1 is a divalent aromatic group having a bonding group at a position other than the meta position or the parallel axis direction.
• an aromatic diamine or aromatic dicarboxylic acid dichloride represented by the formula (2), (3), (4), or (5) below can be copolymerized.
• aromatic diamines represented by the formula (2) or (3) include p-phenylenediamine, chlorophenylenediamine, methylphenylenediamine, acetylphenylenediamine, aminoanisidine, benzidine, bis(aminophenyl) ether, bis(aminophenyl) sulfone, diaminobenzanilide, and diaminoazobenzene.
• aromatic dicarboxylic acid dichlorides represented by the formula (4) or (5) include terephthalic acid chloride, 1,4-naphthalenedicarboxylic acid chloride, 2,6-naphthalenedicarboxylic acid chloride, 4,4'-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, and bis(chlorocarbonylphenyl) ether.
• Ar2 represents a divalent aromatic group different from Ar1
• Ar3 represents a divalent aromatic group different from Ar1
• Y represents at least one atom or functional group selected from the group consisting of an oxygen atom, a sulfur atom, and an alkylene group
• X represents a halogen atom.
• the crystallinity of the meta-type wholly aromatic polyamide fiber is preferably 5 to 35% because the absorption for a dye is excellent such that an intended color can be easily achieved even when using the dye in a reduced amount or even under poor dyeing conditions. Further, the crystallinity is more preferably 15 to 25% because localization of a dye in the surface is unlikely to occur and a high resistance to discoloration and color fading is obtained and further dimensional stability required for the practical use can be secured.
• the residual solvent content of the meta-type wholly aromatic polyamide fiber is preferably 0.1% by weight or less (preferably 0.001 to 0.1% by weight) because excellent flame retardancy of the meta-type wholly aromatic polyamide fiber is not sacrificed.
• the dope-dyed meta-type wholly aromatic polyamide fiber in view of obtaining excellent lightfastness, preferred is, for example, the dope-dyed meta-type wholly aromatic polyamide fiber described in International Patent Application Publication No. 2013/061901 pamphlet.
• pigments used in the fiber include organic pigments, such as azo, phthalocyanine, perinone, perylene, and anthraquinone pigments, and inorganic pigments, such as carbon black, ultramarine blue, red iron oxide, titanium oxide, and iron oxide.
• Examples of methods for mixing the meta-type wholly aromatic polyamide with a pigment include a method in which an amide solvent slurry having a pigment uniformly dispersed in an amide solvent is prepared, and the amide solvent slurry is added to a solution having the meta-type wholly aromatic polyamide dissolved in an amide solvent, and a method in which a pigment powder is directly added to a solution having the meta-type wholly aromatic polyamide dissolved in an amide solvent.
• the amount of the pigment incorporated is 10.0% by weight or less, preferably 5.0% by weight or less, based on the weight of the meta-type wholly aromatic polyamide.
• the pigment is added in an amount of more than 10.0% by weight, the obtained fiber is likely to be poor in physical properties.
• the solution polymerization method or interfacial polymerization method described in JP-B-35-14399 , U.S. Patent No. 3,360,595 , JP-B-47-10863 , or the like may be used.
• an amide-solvent solution containing an aromatic copolyamide polymer obtained by the above-mentioned solution polymerization, interfacial polymerization, or the like may be used, or a solution obtained by isolating the polymer from the above-mentioned polymerization solution and dissolving the polymer in an amide solvent may be used.
• amide solvents used in the polymerization include N,N-dimethylformamide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone (NMP), and dimethyl sulfoxide.
• the copolymerized aromatic polyamide polymer solution obtained as mentioned above further contains an alkali metal salt or an alkaline earth metal salt
• the solution is stabilized and can be advantageously used in a higher concentration at low temperatures.
• the amount of the alkali metal salt or alkaline earth metal salt is preferably 1% by weight or less, more preferably 0.1% by weight or less, based on the weight of the polymer solution.
• the polymer solution preferably contains a flame retardant.
• the above-obtained spinning solution (meta-type wholly aromatic polyamide polymer solution or dope-dyed meta-type wholly aromatic polyamide polymer solution) is discharged into a coagulation liquid so as to undergo coagulation.
• the spinning apparatus there is no particular limitation, and a known wet spinning apparatus can be used. Further, with respect to the number of spinning holes of a spinning nozzle, the arrangement of the holes, the form of the hole, and the like, there is no particular limitation as long as wet spinning can be stably made, and, for example, a multihole spinning nozzle for rayon yarn having 1,000 to 30,000 holes and having a spinning hole diameter of 0.05 to 0.2 mm, or the like may be used.
• the temperature of the above-obtained spinning solution (meta-type wholly aromatic polyamide polymer solution) being discharged from a spinning nozzle is suitably in the range of from 20 to 90°C.
• an amide solvent containing substantially no inorganic salt is used.
• an aqueous solution having an NMP concentration of 45 to 60% by weight at a bath solution temperature in the range of from 10 to 50°C is preferably used.
• the amide solvent (preferably NMP) concentration is less than 45% by weight, a structure having a thick skin is disadvantageously formed, so that the washing efficiency in the washing step is lowered, making it difficult to reduce the residual solvent content of the fiber.
• the amide solvent (preferably NMP) concentration is more than 60% by weight, coagulation throughout the inside of the fiber cannot be achieved, making it difficult to reduce the residual solvent content of the fiber.
• the time for immersing the fiber in the coagulation bath is suitably in the range of from 0.1 to 30 seconds.
• Drawing is conducted using an amide solvent.
• a plasticized drawing bath containing an aqueous solution having an NMP concentration of 45 to 60% by weight at a bath solution temperature in the range of from 10 to 50°C
• the fiber is subjected to drawing at a draw ratio of 3 to 4 times.
• the resultant fiber is well washed through an aqueous solution having an NMP concentration of 20 to 40% by weight at 10 to 30°C and further through a warm water bath at 50 to 70°C.
• the fiber after being washed is subjected to dry heat treatment at a temperature of 270 to 290°C, obtaining a meta-type wholly aromatic polyamide fiber which satisfies the crystallinity and residual solvent content in the above-mentioned respective ranges.
• the meta-type wholly aromatic polyamide fiber may be in the form of either a continuous fiber (multifilament) or a short fiber.
• a short fiber having a fiber length of 25 to 200 mm is preferred, and the short fiber having a single fiber fineness of 1 to 5 dtex is more preferred.
• meta-type wholly aromatic polyamide fiber in view of improving the strength of the cloth, it is preferred that a mixed yarn of the meta-type wholly aromatic polyamide fiber and a para-type wholly aromatic polyamide fiber and/or an oxidized polyacrylonitrile fiber is contained in the cloth.
• the para-type wholly aromatic polyamide fiber used in this case is more preferably a paraphenyleneterephthalamide fiber or a coparaphenylene-3,4'-oxydiphenyleneterephthalamide fiber.
• the flame-retardant fiber is preferably contained in an amount of 80% by weight or more (more preferably 100% by weight), based on the cloth weight of the fire-resistant fabric.
• a multifilament (continuous fiber) or a spun yarn obtained by mix spinning of the above-mentioned fiber is preferably used.
• a spun yarn is preferred.
• the spun yarn is preferably of a yarn count that is generally used for clothing, for example, English cotton yarn count 20 to 60.
• the spun yarn may be used in the form of a single yarn or may be used after being twisted.
• the fire-resistant fabric of the invention is required to have such stretchability and flexibility that the fabric can follow the deformation caused during seating and to have air permeability, and therefore is preferably knitted fabric.
• the knitted fabric may be warp-knitted fabric, but is preferably circular knitted fabric (weft-knitted fabric).
• the fire-resistant fabric When used in the vehicle and aircraft applications, the fire-resistant fabric is required to be lightweight, and is further needed to have heat shield properties, and therefore preferably has a thickness.
• double knit is preferred.
• the method for producing such double knit may be a known method, and production of the double knit by means of a circular knitting machine is preferred.
• the structure of the double knit is preferably interlock as a general structure, but may be rib, purl, or a modified structure thereof.
• a structure having an uneven surface is also preferably used.
• an oil agent or a wax is removed from the cloth in view of surely achieving flame retardancy.
• washing processing is a general method.
• the fabric is colored with a deep color, and, for example, black or dark blue pigment dope-dyeing, or dyeing using a carrier, or the like is preferably used.
• a sweat absorber, a water repellent, a thermal storage agent or an antistatic agent, an anti-fungus agent, a deodorant, a mothproofing agent, a mosquito repellent, a mosquito repellent, a phosphorescent agent, a retroreflective agent, or the like may be applied to the fabric.
• the thus obtained fire-resistant fabric has a bending resistance of 95 mm or less (preferably 10 to 80 mm, more preferably 30 to 60 mm) in the warp direction or in the weft direction, as measured by the method prescribed in JIS L 1096 (2010) A method (45° cantilever method).
• the fire-resistant fabric has a bending resistance of 95 mm or less (preferably 10 to 80 mm, more preferably 30 to 60 mm) in the warp direction and the weft direction (the wales direction and the course direction).
• the bending resistance in the warp direction and the weft direction is larger than 95 mm, the fire-resistant fabric is likely to be so hard that the comfortability or formability becomes poor.
• the fire-resistant fabric of the invention in view of the lightweight properties, it is preferred that the fire-resistant fabric has a weight per unit in the range of 400 g/m 2 or less (preferably 200 to 400 g/m 2 ). Further, the fire-resistant fabric preferably has a thickness in the range of 0.5 to 2.0 mm. In view of the comfortability, the fire-resistant fabric preferably has an air permeability of 90 cm 3 /cm 2 •sec or more (more preferably 100 to 300 cm 3 /cm 2 •sec).
• the fire-resistant fabric has an elongation of 8% or more, as measured in accordance with JIS 1096 (2010) D method (constant load method) Cut strip method, at a distance between two gage marks: 200 mm, and at a constant load: 4.9 N, and has a stretch modulus of 70% or more, as measured in accordance with JIS L 1096 (2010) E method (constant load method) Cut strip method at a constant load: 0.89 N, with repeating loading: once.
• the fire-resistant fabric preferably has a burst strength of 1,000 kPa or more (more preferably 1,000 to 3,000 kPa), as measured in accordance with JIS L 1096 (2010) A method (Mullen method).
• the fire-resistant fabric preferably has a deep color, i.e., a low lightness, and preferably has an L* of 30 or less (more preferably 5 to 25), as measured in accordance with JIS Z 8781-4.
• the fire-resistant fabric is required to have durability when exposed to a flame, and therefore, when the fire-resistant fabric is subjected to flame hole forming test in which the fabric is brought into contact with a burner flame at about 1,100 to 1,200°C and a period of time required until the fabric is carbonized and torn is measured, the above-mentioned time is preferably 100 seconds or more (more preferably 200 to 1,000 seconds).
• the fire-resistant fabric of the present invention has excellent flame retardancy, fire resistance, strength, comfortability, and formability.
• the fire-resistant fabric is preferably used for a seat. Especially preferred is a seat having the fire-resistant fabric sandwiched between face fabric and a cushioning material. In the seat, it is preferred that the fire-resistant fabric is stacked on the face fabric without using a bonding agent. For example, it is preferred that the fire-resistant fabric is fixed to the face fabric by sewing.
• the fire-resistant fabric is used as an upholstery backing material, and a cushioning material, such as urethane, is covered with the fire-resistant fabric, and further covered with upholstery face fabric.
• a cushioning material such as urethane
• the face fabric and the fire-resistant fabric are not bonded but the fire-resistant fabric is partially fixed to the face fabric by sewing or the like.
• the seat is advantageously used as a seat for use in aircraft, vehicle, rolling stock, vessel, hospital, nursing home, theater, interior decoration, or the like.
• a flame was brought into contact with a piece of the double knit described in the Examples below, and simultaneously measurement of a time was started, and a period of time required until the double knit was carbonized and a through-hole was formed in the knit so that the flame was able to be seen was measured.
• Metal-type wholly aromatic polyamide fiber dope-dyed short fiber “Conex” (registered trademark), manufactured by Teijin Limited; average single fiber fineness: 1.7 dtex; fiber length: 51 mm (hereinafter, referred to as “meta-aramid fiber”)
• Metal-aramid fiber "Para-type wholly aromatic polyamide short fiber”: "Technora” (registered trademark), manufactured by Teijin Limited; average single fiber fineness: 1.7 dtex; fiber length: 51 mm (hereinafter, referred to as "para-aramid fiber”)
• the obtained yarn count 40 single yarn was double-ply twisted at 19.8 twists/2.54 cm, and subjected to steam setting at 100°C for 60 minutes.
• Metal-type wholly aromatic polyamide fiber dope-dyed short fiber “Conex” (registered trademark), manufactured by Teijin Limited; average single fiber fineness: 1.7 dtex; fiber length: 51 mm (hereinafter, referred to as "meta-aramid fiber”)
• Para-type wholly aromatic polyamide short fiber "Technora” (registered trademark), manufactured by Teijin Limited; average single fiber fineness: 1.7 dtex; fiber length: 51 mm (hereinafter, referred to as "para-aramid fiber”)
• Oxidized polyacrylonitrile fiber "Pyromex” (registered trademark), manufactured by Teijin Limited; average single fiber fineness: 2.2 dtex; fiber length: 51 mm
• the obtained yarn count 40 single yarn was double-ply twisted at 19.8 twists/2.54 cm, and subjected to steam setting at 100°C for 60 minutes.
• Example 1 Example 2
• Example 3 Example 4 Use of yarn Cylinder Material Meta-aramid fiber 95% 65% 95% 100% Para-aramid fiber 5% 5% 5% - Oxidized acrylic fiber - 30% - - Yarn count 40/2 40/2 40/2 - Dial Material Meta-aramid fiber 95% 65% 95% 100% Para-aramid fiber 5% 5% 5% - Oxidized acrylic fiber - 30% - Yarn count 40/2 40/2 40/2 30/1 Gauge Course/2.54 cm 20 20 20 20 20 20 37 37 37 37 Wales/2.54 cm 28 28 28 28 28 28 28 28 28 28 28 Structure Interlock Interlock Interlock Tuck mock Weight per unit Thickness g/m 2 340 345 340 250 Air permeability mm 1.3 1.3 1.3 1.0 Burst strength cm 3 /cm 2 •sec 110 110 110 220 kPa 1890 1700 1890 1000 Bending resistance mm Wales 51 55 51 30 Course 33 40 33 20 Elongation % Wales 11 9 11 20 Course 28.3 25 28.
• thermoplastic elastic fiber an eccentric sheath-core manner conjugate fiber (single fiber fineness: 6.6 dtex) was used, wherein the conjugate fiber was obtained in such a way that a block copolymerized polyether polyester elastomer as a sheath portion and polybutylene terephthalate as a core portion were spun by a general method so that the core/sheath weight ratio became 50:50, and drawn at 2.0 times and cut into 64 m, and then subjected to heat treatment with warm water at 95°C to reduce shrinkage and cause crimps, and dried and then an oil agent was applied to the resultant fiber, wherein the block copolymerized polyether polyester elastomer was obtained by, while heating, reacting 38% by weight of polybutylene terephthalate obtained by polymerizing an acid component having terephthalic acid and isophthalic acid mixed in a 80/20 (mol%) ratio and butylene glycol with 62% by weight of polybutylene glycol (mol
• Comparative Example 1 Comparative Example 2 Weight per unit g/m 2 300 450 Air permeability cm 3 /cm 2 •sec 110 90 Burst strength kPa 500 700 Bending resistance mm 100 100 Elongation % 30 30 30 Stretch modulus % 80 80 Wrinkle evaluation ⁇ ⁇ L* 30 30 Flame hole forming sec 300 or more 300 or more
• a fire-resistant fabric and a seat each having excellent flame retardancy, fire resistance, strength, comfortability, and formability, and the invention is of extremely great industrial significance.

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• Engineering & Computer Science (AREA)
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• Mechanical Engineering (AREA)
• Knitting Of Fabric (AREA)
• Artificial Filaments (AREA)
• Woven Fabrics (AREA)

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• 2020
  • 2020-08-05 US US17/639,398 patent/US20220325445A1/en not_active Abandoned
  • 2020-08-05 EP EP20867562.9A patent/EP4036294A4/fr active Pending
  • 2020-08-05 CN CN202080066303.7A patent/CN114423893A/zh active Pending
  • 2020-08-05 WO PCT/JP2020/030003 patent/WO2021059764A1/fr unknown

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