WO2011034155A1 - Matériau de peau pour élément intérieur de véhicule - Google Patents

Matériau de peau pour élément intérieur de véhicule Download PDF

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Publication number
WO2011034155A1
WO2011034155A1 PCT/JP2010/066105 JP2010066105W WO2011034155A1 WO 2011034155 A1 WO2011034155 A1 WO 2011034155A1 JP 2010066105 W JP2010066105 W JP 2010066105W WO 2011034155 A1 WO2011034155 A1 WO 2011034155A1
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Prior art keywords
fabric
vehicle interior
skin material
resin
weight
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/JP2010/066105
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English (en)
Japanese (ja)
Inventor
祐之 松田
正雄 原
嗣久 宮本
孝宏 栃岡
力弥 安孫子
宏和 林
清綱 豊原
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Mazda Motor Corp
Teijin Ltd
Teijin Frontier Co Ltd
Original Assignee
Mazda Motor Corp
Teijin Fibers Ltd
Teijin Ltd
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Publication date
Application filed by Mazda Motor Corp, Teijin Fibers Ltd, Teijin Ltd filed Critical Mazda Motor Corp
Publication of WO2011034155A1 publication Critical patent/WO2011034155A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings
    • 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
    • D03D15/573—Tensile strength
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • 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
    • 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
    • D03D15/40—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 structure of the yarns or threads
    • D03D15/49—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 structure of the yarns or threads textured; curled; crimped
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0036—Polyester fibres
    • 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
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042—Acrylic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/26—Vehicles, transportation
    • D06N2211/261—Body finishing, e.g. headliners
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/26—Vehicles, transportation
    • D06N2211/263—Cars
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/34—Material containing ester groups
    • D06P3/52—Polyesters
    • D06P3/54—Polyesters using dispersed dyestuffs
    • 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]
    • D10B2331/041—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] derived from hydroxy-carboxylic acids, e.g. lactones
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/12—Physical properties biodegradable
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/14—Dyeability

Definitions

  • the present invention relates to a vehicle interior member skin material composed of a fabric containing polylactic acid filaments and subjected to a dyeing process, and has an excellent fabric strength even after being exposed to a humid heat environment. It relates to the skin material.
  • Polylactic acid filaments are attracting attention in recent years as fibers that are friendly to the global environment because the raw material lactic acid or lactide is produced from natural products, and these polylactic acid filaments can be used in various applications such as vehicle interior parts. (See, for example, Patent Document 1 and Patent Document 2).
  • polylactic acid filaments are generally inferior in heat and moisture resistance compared to petroleum-derived aromatic polyesters such as polyethylene terephthalate, so that when used as a skin material for vehicle interior members exposed to harsh environments, the fabric of a skin material for vehicle interior members There was a problem that the strength was lowered.
  • the present invention has been made in view of the above-mentioned background, and an object of the present invention is a skin material for a vehicle interior member composed of a fabric containing a polylactic acid filament and subjected to a dyeing process, which is exposed to a wet heat environment. Another object of the present invention is to provide a vehicle interior member skin material having excellent fabric strength even after being applied.
  • the present inventors have found that the fiber strength due to the dyeing process can be suppressed by shortening the dyeing time when dyeing the cloth containing the polylactic acid filament.
  • the present invention has been completed by finding more headlines and further studies.
  • a vehicle interior material composed of a fabric containing polylactic acid filaments and subjected to a dyeing process, which was exposed to an environment of temperature 50 ° C. and humidity 95% RH for 1,000 hours.
  • the said tensile strength shall measure the tensile strength of the skin
  • the polylactic acid filament is composed of (i) poly L-lactic acid having a weight average molecular weight of 50,000 to 300,000 (component A), and (ii) poly D-lactic acid having a weight average molecular weight of 50,000 to 300,000 (component B). And (iii) A filament containing a phosphoric acid ester metal salt represented by the following formula (1) or (2) in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the total of the A component and the B component. .
  • R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
  • R 2 and R 3 each independently represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms
  • M 1 represents an alkali metal atom or Represents an alkaline earth metal atom
  • p represents 1 or 2.
  • each of R 4 , R 5 and R 6 independently represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms
  • M 2 represents an alkali metal atom or an alkaline earth metal atom
  • p represents 1 or 2 Represents.
  • the polylactic acid filament is preferably a false twist crimped yarn.
  • the said fabric is a woven fabric whose cover factor (CF) represented by a following formula is 1,800 or more.
  • CF cover factor
  • CF (DWp / 1.1) 1/2 ⁇ MWp + (DWf / 1.1) 1/2 ⁇ MWf
  • DWp is the total warp fineness (dtex)
  • MWp is the warp weave density (main / 2.54 cm)
  • DWf is the total weft fineness (dtex)
  • MWf is the weft weave density (main / 2.54 cm).
  • the fabric is preferably a knitted fabric of 30 to 100 courses / 2.54 cm and 20 to 60 wales / 2.54 cm.
  • the conditions of the dyeing process are a temperature of 110 to 140 ° C. and a time of 19 minutes or less.
  • the resin is preferably a silicon resin, a polyethylene resin, or a polyethylene terephthalate resin.
  • a backing resin is applied to the fabric at an application amount of 30 g / m 2 or more. In that case, it is preferable that the backing resin contains an acrylic resin.
  • the manufacturing method of the skin material for vehicle interior members including each process is provided.
  • the fabric is preferably a woven fabric having a cover factor (CF) represented by the following formula of 1,800 or more.
  • CF cover factor
  • CF (DWp / 1.1) 1/2 * MWp + (DWf / 1.1) 1/2 * MWf
  • DWp is the warp total fineness (dtex)
  • MWp is the warp weave density (main / 2.54 cm)
  • DWf is the total weft fineness (dtex)
  • MWf is the weft weave density (main / 2.54 cm).
  • the fabric is preferably a knitted fabric of 30 to 100 courses / 2.54 cm and 20 to 60 wales / 2.54 cm.
  • FIG. 1 is a diagram schematically showing a state in which a backing resin is applied to a fabric in a vehicle interior material according to the present invention.
  • the skin material for vehicle interior members of the present invention is a skin material for vehicle interior members composed of a fabric containing polylactic acid filaments and subjected to dyeing, and is in an environment of a temperature of 50 ° C. and a humidity of 95% RH.
  • the said tensile strength shall measure the tensile strength of the skin
  • the fabric strength decreases with time when using the vehicle interior member skin material, which is not preferable because of lack of practicality.
  • the tensile strength is preferably as large as possible, but practically, it may be 1,000 N / 50 mm or less.
  • the skin material for a vehicle interior member according to the present invention can be manufactured, for example, by the following method. (Polylactic acid)
  • the polylactic acid filament used in the present invention is a filament made of polylactic acid comprising a poly L-lactic acid component and / or a poly D-lactic acid component.
  • a poly L-lactic acid component and a poly D-lactic acid component having crystallinity it is preferable to use a poly L-lactic acid component and a poly D-lactic acid component having crystallinity, and a filament made of a poly L-lactic acid component having a high optical purity and a polylactic acid composition composed of a poly D-lactic acid component is preferable.
  • a crystalline poly L-lactic acid component or poly D-lactic acid component having a melting point of 160 ° C. or higher can be suitably used.
  • the poly L-lactic acid component is preferably 90 to 100 mol%, more preferably 95 to 100 mol% of L-lactic acid units, and 99 to 100 mol% for realizing a high melting point, in addition to the degree of stereoization.
  • the poly-D-lactic acid component is preferably 90 to 100 mol%, more preferably 95 to 100 mol% of D-lactic acid units, and 99 to 100 mol% for realizing a high melting point, and in addition, the degree of stereoization is increased.
  • the copolymer component unit is a unit derived from dicarboxylic acid, polyhydric alcohol, hydroxycarboxylic acid, lactone, etc.
  • dicarboxylic acid examples include succinic acid, adipic acid, azelaic acid, sebacic acid, terephthalic acid, and isophthalic acid.
  • Polyhydric alcohols include ethylene glycol, propylene glycol, propanediol, butanediol, pentanediol, hexanediol, octanediol, glycerin, sorbitan, neopentyl glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, polytetramethylene glycol
  • Aliphatic polyhydric alcohols such as aliphatic polyhydric alcohols, and aromatic polyhydric alcohols obtained by adding ethylene oxide to bisphenol.
  • the hydroxycarboxylic acid include glycolic acid, hydroxybutyric acid, 4-hydroxybenzoic acid and the like.
  • lactone examples include glycolide, ⁇ -caprolactone glycolide, ⁇ -caprolactone, ⁇ -propiolactone, ⁇ -butyrolactone, ⁇ - or ⁇ -butyrolactone, pivalolactone, ⁇ -valerolactone, and the like.
  • the poly L-lactic acid component and the poly D-lactic acid component both have a weight average molecular weight of preferably 100,000 to 500,000, more preferably 150,000 to 350,000. Further, if it is 10% by weight or less based on the polymer weight, other components may be blended.
  • the poly L-lactic acid and poly D-lactic acid can be produced by a known method.
  • L- or D-lactide can be produced by heating and ring-opening polymerization in the presence of a metal polymerization catalyst.
  • a metal polymerization catalyst after crystallizing low molecular weight polylactic acid containing a metal polymerization catalyst, it can be produced by solid phase polymerization by heating under reduced pressure or in an inert gas stream. Further, it can be produced by a direct polymerization method in which lactic acid is subjected to dehydration condensation in the presence / absence of an organic solvent.
  • the polymerization reaction can be carried out in a conventionally known reaction vessel. For example, a vertical reactor or a horizontal reactor equipped with a stirring blade for high viscosity, such as a helical ribbon blade, can be used alone or in parallel.
  • Alcohol may be used as a polymerization initiator. Such alcohol is preferably non-volatile without inhibiting the polymerization of polylactic acid.
  • decanol, dodecanol, tetradecanol, hexadecanol, octadecanol and the like can be suitably used.
  • a relatively low molecular weight lactic acid polyester obtained by the above-described ring-opening polymerization method or lactic acid direct polymerization method is used as a prepolymer.
  • the prepolymer is preferably crystallized in advance in the temperature range of the glass transition temperature (Tg) or higher and lower than the melting point (Tm) from the viewpoint of preventing fusion.
  • the crystallized prepolymer is filled in a fixed vertical or horizontal reaction vessel, or a reaction vessel (rotary kiln, etc.) where the vessel itself rotates like a tumbler or kiln, and the prepolymer glass transition temperature (Tg) or higher. Heated to a temperature range below the melting point (Tm). There is no problem even if the polymerization temperature is raised stepwise as the polymerization proceeds.
  • a method of reducing the pressure inside the reaction vessels or circulating a heated inert gas stream is also preferably used.
  • the metal-containing catalyst used at the time of polylactic acid polymerization is preferably deactivated with a conventionally known deactivator.
  • Examples of such a deactivator include an organic ligand consisting of a group of chelate ligands having an imino group and capable of coordinating to a polymerized metal catalyst, dihydridooxoline (I) acid, dihydridotetraoxodilin (II, II ) Acid, hydridotrioxoline (III) acid, dihydridopentaoxodiphosphoric acid (III, III) acid, hydridopentaoxodiphosphoric acid (II, IV) acid, dodecaoxohexaphosphorus (III) acid, hydridooctaoxotriphosphorus ( III, IV, IV) acid, octaoxotriphosphoric acid (IV, III, IV), hydridohexaoxodiphosphoric acid (III, V), hexaoxodiphosphoric acid (IV), decaoxotetralinic acid (IV),
  • the metaphosphoric acid compound is a cyclic metaphosphoric acid in which about 3 to 200 phosphoric acid units are condensed, an ultra-regional metaphosphoric acid having a three-dimensional network structure, or a salt thereof (alkal metal salt, alkaline earth metal salt, onium salt). Is included. Among them, cyclic sodium metaphosphate, ultra-region sodium metaphosphate, phosphono-substituted lower aliphatic carboxylic acid derivative dihexylphosphonoethyl acetate (hereinafter sometimes abbreviated as DHPA) and the like are preferably used.
  • the lactide content of the polylactic acid composition is selected in the range of 0 to 700 ppm.
  • a range of 0 to 500 ppm, more preferably 0 to 200 ppm, and particularly preferably 0 to 100 ppm is selected. This is because when polylactic acid has a lactide content in such a range, the stability at the time of melting can be improved, and the advantages of efficient and stable spinning and the hydrolysis resistance of the fiber product can be enhanced.
  • a conventionally known lactide reduction treatment or a combination thereof is performed at any stage from the polymerization of poly L-lactic acid and poly D-lactic acid to the end of polylactic acid production. Can be achieved.
  • the polylactic acid composition preferably has a weight average molecular weight of 100,000 to 500,000. More preferably, it is 100,000 to 300,000.
  • the ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic acid composition is referred to as molecular weight dispersion (Mw / Mn).
  • Mw / Mn The ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic acid composition.
  • Mw / Mn The ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic acid composition.
  • Mw / Mn The ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic acid composition.
  • Mw / Mn The ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic acid composition.
  • Mw / Mn The ratio between the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the polylactic
  • the melt viscosity becomes large, which is not preferable in the spinning and stretching processes.
  • the proportion of molecules having a weight average molecular weight value of less than 100,000 may increase. In this case, the durability of the mechanical properties of the fiber is increased. This is not preferable in use.
  • the range of molecular weight dispersion is preferably 1.5 to 3.0, more preferably 1.5 to 2.5, and still more preferably 1.6 to 2.5.
  • a weight average molecular weight and a number average molecular weight are a weight average molecular weight and a number average molecular weight in terms of standard polystyrene as measured by gel permeation chromatography (GPC) using chloroform as an eluent.
  • the weight ratio of the poly L-lactic acid component to the poly D-lactic acid component in the polylactic acid composition is preferably in the range of 90:10 to 10:90. It is more preferably in the range of 75:25 to 25:75, still more preferably in the range of 60:40 to 40:60, and preferably as close to 50:50 as possible.
  • the polylactic acid composition preferably contains a stereocomplex polylactic acid composed of a poly L-lactic acid component and a poly D-lactic acid component.
  • the content rate of stereocomplex polylactic acid is the ratio of the peak corresponding to the melting of the stereocomplex crystal in the melting peak in the temperature rising process in the differential scanning calorimeter (DSC) measurement, It is represented by the following formula (a), preferably 80 to 100%, more preferably 95 to 100%.
  • the melting point in the present invention is a crystal melting peak temperature measured by DSC, and the latter is used when a low temperature crystal melting peak temperature and a stereocomplex crystal melting peak temperature exist. It is important that the temperature is 195 ° C. or higher (preferably in the range of 195 to 250 ° C., more preferably 200 to 240 ° C.).
  • the stereocomplex crystal melting enthalpy is preferably 20 J / g or more (more preferably 30 J / g or more).
  • the polylactic acid composition can be produced by mixing a poly L-lactic acid component alone or a poly L-lactic acid component and a poly D-lactic acid component in a predetermined weight ratio.
  • the mixing can be performed in the presence of a solvent.
  • the solvent is not particularly limited as long as it dissolves poly L-lactic acid and poly D-lactic acid.
  • chloroform, methylene chloride, dichloroethane, tetrachloroethane, phenol, tetrahydrofuran, N-methylpyrrolidone, N, N-dimethylformamide, butyrolactone, trioxane, hexafluoroisopropanol or the like alone or in combination of two or more are preferred.
  • the mixing can be performed in the absence of a solvent.
  • stereoblock polylactic acid in which a poly L-lactic acid segment and a poly D-lactic acid segment are bonded can also be suitably used as the polylactic acid composition.
  • Stereoblock polylactic acid is a block polymer in which a poly L-lactic acid segment and a poly D-lactic acid segment are bonded in the molecule.
  • Such block polymers include, for example, a method of producing by sequential ring-opening polymerization, a method of polymerizing poly (L-lactic acid) and poly (D-lactic acid), and then binding them with a chain exchange reaction or a chain extender.
  • a block copolymer having the above-mentioned basic constitution such as a method of polymerizing L-lactic acid and poly-D-lactic acid and blending and then solid-phase polymerizing to chain-extend, a method of producing from racemic lactide using a stereoselective ring-opening polymerization catalyst, etc. Any polymer can be used regardless of the production method.
  • the polylactic acid composition and stereoblock polylactic acid used in the present invention preferably have a stereogenicity of 90% or more, more preferably 100%.
  • the degree of stereoification can be determined by the above formula (a) by comparing the enthalpies of melting points in DSC measurement.
  • preferred examples include metal phosphates represented by the following formulas (1) and / or (2).
  • R 1 Represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
  • R 2 , R 3 Each independently represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.
  • alkyl group having 1 to 12 carbon atoms examples include methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, sec-butyl group, iso-butyl group, tert-butyl group, amyl group, tert-amyl group, hexyl group, heptyl group, octyl group, iso-octyl group, tert-octyl group, 2-ethylhexyl group, nonyl group, iso-nonyl group, decyl group, iso-decyl group, tert-decyl group, An undecyl group, a dodecyl group, a tert-dodecyl group, etc.
  • M 1 Represents an alkali metal atom such as Na, K or Li or an alkaline earth metal atom such as Mg or Ca.
  • p represents 1 or 2.
  • R 1 Is a hydrogen atom
  • R 2 , R 3 Are both tert-butyl groups.
  • R in formula (2) 4 , R 5 , R 6 Each independently represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.
  • alkyl group having 1 to 12 carbon atoms examples include methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, sec-butyl group, iso-butyl group, tert-butyl group, amyl group, tert-amyl group, hexyl group, heptyl group, octyl group, iso-octyl group, tert-octyl group, 2-ethylhexyl group, nonyl group, iso-nonyl group, decyl group, iso-decyl group, tert-decyl group, An undecyl group, a dodecyl group, a tert-dodecyl group, etc.
  • M 2 Represents an alkali metal atom such as Na, K or Li or an alkaline earth metal atom such as Mg or Ca.
  • p represents 1 or 2.
  • R 4 , R 6 Is a methyl group
  • R 5 Is a tert-butyl group.
  • ADK STAB trade name “ADK STAB” NA-11 manufactured by ADEKA Co., Ltd.
  • the phosphoric acid ester metal salt can be synthesized by a known method.
  • the compound represented by the formula (1) or (2) is a compound known as a crystal nucleating agent for polylactic acid.
  • M in the formulas (1) and (2) 1 And M 2 Is an alkali metal atom or an alkaline earth metal atom.
  • M in Formula (1) and Formula (2) 1 And M 2 In the case of other metals such as aluminum, the heat resistance of the compound itself is low, and a sublimate is generated during spinning, which may be difficult to spin.
  • the phosphoric acid ester metal salt (component C) preferably has an average primary particle size of 0.01 to 10 ⁇ m, more preferably 0.05 to 7 ⁇ m. It is industrially difficult to make the particle size smaller than 0.01 ⁇ m, and it is not necessary to make it so small. On the other hand, if it is larger than 10 ⁇ m, the frequency of yarn breakage increases during spinning and drawing.
  • metal salts are preferably used in an amount of 0.05 wt% to 5 wt%, more preferably 0.05 wt% to 0.5 wt%, still more preferably 0.05 wt% to 0.2 wt%, relative to the polylactic acid component. Is preferred. When the amount is too small, the effect of improving the degree of stereoization is small, and when too large, the resin itself is deteriorated, which is not preferable.
  • the polylactic acid component used in the present invention may or may not contain a moisture and heat resistance improver. When the polylactic acid component contains a heat and humidity resistance improver, a carboxyl group-capping agent having a specific functional group can be suitably applied as the heat and humidity resistance improver.
  • a carbodiimide compound whose specific functional group is a carbodiimide group can be preferably selected from the viewpoints of effectively sealing the carboxyl group, promoting the formation of the color of the polylactic acid fiber structure, the formation of a stereocomplex phase, and heat and heat resistance.
  • carbodiimide compounds include dicyclohexylcarbodiimide, diisopropylcarbodiimide, dimethylcarbodiimide, diisobutylcarbodiimide, dioctylcarbodiimide, octyldecylcarbodiimide, di-tert-butylcarbodiimide, tert-butylisopropylcarbodiimide, dibenzylcarbodiimide, N-octadecylimide N'-phenylcarbodiimide, N-benzyl-N'-phenylcarbodiimide, N-benzyl-N'-tolylcarbodiimide, di-o-toluylcarbodiimide, di-p-toluylcarbodiimide, bis (p-nitrophenyl) carbodiimide, bis (P-aminophenyl) carbodiimide, bis (p-hydroxyphenyl)
  • bis (2,6-diisopropylphenyl) carbodiimide and 2,6,2 ′, 6′-tetraisopropyldiphenylcarbodiimide are preferred from the viewpoints of reactivity and stability.
  • industrially available dicyclohexylcarbodiimide and diisopropylcarbodiimide are also suitable.
  • Carbodilite commercially available from Nisshinbo Co., Ltd.
  • Carbodilite commercially available from Nisshinbo Co., Ltd.
  • Carbodilite LA-1 sold as a polylactic acid resin modifier
  • Carbodilite HMV-8CA sold as a polyester resin modifier
  • a carbodiimide compound can also be manufactured by a conventionally well-known method. For example, it can be produced by subjecting an organic isocyanate to a decarboxylation condensation reaction in a solvent-free or inert solvent at a temperature of 70 ° C. or higher using an organic phosphorus compound or an organometallic compound as a catalyst.
  • the polycarbodiimide compound may be a conventionally known method for producing a polycarbodiimide compound, for example, US Pat. No. 2,941,956, Japanese Examined Patent Publication No. 47-33279, J. Pat. Org. Chem. 28, 2069-2075 (1963), Chemical Review 1981, Vol. 81 no. 4, p619-621 and the like.
  • the content of the carbodiimide compound is preferably 0.1 to 5.0 parts by weight, more preferably 0.5 to 2.0 parts by weight, per 100 parts by weight of the polylactic acid composition.
  • a stereocomplex polylactic acid fiber containing a carbodiimide compound in such a range has a molecular weight retention of 95% or more after treatment in boiling water at 100 ° C.
  • the carboxyl group-reactive terminal blocking agent not only seals the terminal carboxyl group of the polylactic acid resin, but also includes a carboxyl group generated by the decomposition reaction of the polylactic acid resin and various additives, lactic acid, formic acid and the like.
  • the carboxyl group of a low molecular compound can be sealed.
  • the said sealing agent is a compound which can seal
  • the carboxyl end group blocking agent it is preferable to use at least one compound selected from an epoxy compound, an oxazoline compound, an oxazine compound, and an isocyanate compound, and among them, an epoxy compound, an oxazoline compound, and an isocyanate compound are preferable.
  • epoxy compound glycidyl ether compounds, glycidyl ester compounds, glycidyl amine compounds, glycidyl imide compounds, glycidyl amide compounds, and alicyclic epoxy compounds can be preferably used.
  • a carboxyl end group capping agent not only can the action of the carbodiimide compound be improved, but fibers that are excellent in spinnability, mechanical properties, heat resistance, and durability can be obtained.
  • the above-mentioned agent and various additives described later may be added and kneaded directly into the reaction vessel at any stage of the polymerization in the ring-opening polymerization method, preferably at a later stage of the polymerization. it can.
  • kneading with an extruder or kneader is preferred.
  • the polymer discharge port of the reactor can be connected to a uniaxial or multiaxial extruder and added.
  • Examples thereof include a method of adding various agents to a polylactic acid composition formed into chips after polymerization or a polylactic acid powder after solid phase polymerization and kneading with an extruder or kneader.
  • various additives can be added directly into an extruder or kneader as a molten liquid, an aqueous solution, an organic solvent solution or a dispersion, or added to polylactic acid from a so-called side feeder.
  • the polylactic acid composition is kneaded with an extruder or kneader as a chip or a fine powder masterbatch.
  • a polylactic acid filament can be obtained by spinning and stretching the polylactic acid composition by a conventional method.
  • the stretching may be one-stage or multistage stretching of two or more stages, and the stretching ratio is preferably 3 times or more (more preferably 4 times or more, particularly preferably 4 to 10 times) from the viewpoint of producing a high-strength fiber.
  • the preheating for stretching may be a plate-type or pin-type contact heater in addition to the temperature rise of the roll.
  • the stretching temperature is preferably in the range of 70 to 140 ° C (more preferably 80 to 130 ° C).
  • the heat treatment after stretching is preferably performed at 170 to 200 ° C. (more preferably 180 to 200 ° C.) under tension.
  • the heat treatment can be performed with a hot roller, a contact heater, a non-contact hot plate, or the like.
  • the polylactic acid filament thus obtained preferably has a melting peak temperature (melting point) of 195 ° C. or higher by differential scanning calorimetry (DSC) measurement.
  • melting point melting point
  • DSC differential scanning calorimetry
  • the yarn strength is 2.5 cN / dtex or more (more preferably 3.0 cN / dtex or more) because the fabric strength of the interior material is improved.
  • the single yarn fineness is 0.01 to 20 dtex (more preferably 0.1 to 7 dtex), the total fineness is 30 to 500 dtex, and the number of filaments is within the range of 20 to 200. preferable. (Weaving and weaving) Next, a fabric is knitted and woven using the polylactic acid filament.
  • the filament may be subjected to twisting, air processing, false twist crimping, or the like.
  • the polylactic acid filament is a false twist crimped yarn because the vehicle interior material exhibits a soft texture.
  • a twisted yarn of about 100 to 600 T / m is applied to the filament because not only the wear resistance of the fabric is improved but also the handleability when the fabric is knitted or woven is improved.
  • the fabric structure of the fabric is not particularly limited, but is a woven or knitted fabric woven or knitted by a loom such as a dobby loom or jacquard loom, or a knitting machine such as a raschel knitting machine, tricot knitting machine, or circular knitting machine. It is preferable.
  • a non-woven fabric or a fiber structure composed of matrix fibers and heat-bondable fibers may be used.
  • examples of the woven structure of the woven fabric include a three-layer structure such as plain weave, twill weave and satin weave, a change structure, a single double structure such as a vertical double weave and a horizontal double weave, and a vertical velvet.
  • the type of knitted fabric may be a circular knitted fabric (weft knitted fabric) or a warp knitted fabric.
  • Preferred examples of the structure of the circular knitted fabric (weft knitted fabric) include a flat knitted fabric, rubber knitted fabric, double-sided knitted fabric, pearl knitted fabric, tucked knitted fabric, float knitted fabric, one-sided knitted fabric, lace knitted fabric, and bristle knitted fabric. Examples include a single denby knitting, a single atlas knitting, a double cord knitting, a half tricot knitting, a back hair knitting, and a jacquard knitting.
  • the number of layers may be a single layer or a multilayer of two or more layers.
  • the fabric is dyed.
  • the dyeing method is not particularly limited, and the dyeing method may be a conventionally known dyeing method such as beam dyeing, cheese dyeing, package dyeing, or liquid dyeing.
  • the dyeing processing conditions are preferably a dyeing temperature of 110 to 140 ° C. and a dyeing time within 19 minutes (preferably 10 to 19 minutes, more preferably 12 to 18 minutes). If the time for such dyeing process exceeds 19 minutes, the fiber strength of the polylactic acid fiber decreases due to the thermal history during the dyeing process, and the fabric strength of the finally obtained vehicle interior material may decrease.
  • the dyeing temperature is a keep temperature at the time of dyeing and the dyeing time is a keep time at the time of dyeing.
  • the dyeing time is a keep time at the time of dyeing.
  • auxiliary agents and various functional agents may be contained in the dyeing bath.
  • scouring under a weak alkali at a temperature of 50 to 100 ° C. or weight reduction processing at an temperature of 80 to 100 ° C. may be performed under alkaline conditions.
  • a resin such as a silicon resin, a polyethylene resin, or a polyethylene terephthalate resin
  • an impregnation method such as a padding method. Since the polylactic acid filament contained in the fabric is coated with the resin by the impregnation treatment, the fiber strength of the polylactic acid filament contained in the vehicle interior material is improved even after the vehicle interior material is exposed to a humid heat environment. This is preferable because it is difficult to lower and an excellent fabric strength is obtained. At the same time, the wear resistance of the fabric is also preferably improved.
  • the amount of the resin adhered is preferably in the range of 0.5 to 5.0% by weight with respect to the fabric weight.
  • Various processes that provide functions such as an ion generating agent may be additionally applied.
  • the yarn strength of the polylactic acid filament contained in the fabric is preferably 2.3 cN / dtex or more. In particular, 90% or more of the yarn strength of the polylactic acid filament before dyeing is preferably maintained.
  • the basis weight is 30 to 1,000 gr / m. 2 It is preferable to be within the range.
  • the cover factor (CF) calculated by the following formula is 1,800 or more (more preferably 2,500 to 4,000), so that the strength of the fabric and the abrasion resistance of the fabric. And preferred in terms of texture.
  • the skin material for a vehicle interior member of the present invention may be composed of the cloth alone, but as schematically shown in FIG.
  • a backing resin is applied on either the front or back side of the cloth at a coating amount of 30 g / m. 2 Or more (preferably 80 to 120 g / m 2 ) Is preferred because the fabric strength is improved.
  • the backing resin materials such as acrylic resins, vinylidene chloride resins, latex resins, vinyl chloride resins and urethane resins can be used.
  • the backing resin is acrylic acid. It is preferable that acrylic resin, such as ester resin, methacrylic ester resin, and acrylamide resin, is included.
  • a conventionally known method may be used as a method for applying the backing resin to the fabric.
  • a flame retardant may be included in the backing resin.
  • the skin material for a vehicle interior member of the present invention thus obtained has a tensile strength of 400 N / 50 mm or more after being exposed for 1,000 hours in an environment of a temperature of 50 ° C. and a humidity of 95% RH. Is essential.
  • a high-density fabric is woven using a stereocomplex polylactic acid filament as a polylactic acid filament, the dyeing time during dyeing is shortened, and the resin is obtained by an impregnation method. Is preferably applied to the fabric and a backing resin is applied to either the front or back of the fabric.
  • the tensile strength after being exposed to an environment of temperature 50 ° C. and humidity 95% RH for 1,000 hours can be 400 N / 50 mm or more.
  • the skin material for a vehicle interior member according to the present invention has excellent fabric strength even after being exposed to a humid heat environment, and is therefore suitably used as a vehicle interior member such as a car seat skin material, a vehicle floor material, and a vehicle ceiling material. Is done.
  • each measurement item in an Example was measured with the following method.
  • Weight average molecular weight (Mw) The weight average molecular weight of the polymer was determined by GPC (column temperature 40 ° C., chloroform) in comparison with a polystyrene standard sample.
  • GPC column temperature 40 ° C., chloroform
  • Glass transition point, melting point, stereogenicity TA-2920 differential scanning calorimeter DSC manufactured by TA Instruments was used. In the measurement, 10 mg of a sample was heated from room temperature to 260 ° C. at a heating rate of 10 ° C./min in a nitrogen atmosphere.
  • the test filament yarn was wound around a measuring machine having a circumference of 1.125 m to prepare a skein having a dryness of 3333 dtex.
  • the skein was suspended from a hanging nail of the scale plate, an initial load of 6 g was applied to the lower part thereof, and a skein length L0 when a load of 600 g was further applied was measured.
  • the load was removed from the skein, the scale plate was removed from the hanging nail, and this skein was immersed in boiling water for 30 minutes to develop crimps.
  • the skein after the boiling water treatment is taken out from the boiling water, the moisture contained in the skein is absorbed and removed by a filter paper, and air-dried at room temperature for 24 hours.
  • the air-dried skein is hung on a hanging nail of the scale plate, a load of 600 g is applied to the lower part, the skein length L1a is measured after 1 minute, the load is removed from the skein, and the skein after 1 minute.
  • the length L2a was measured.
  • the crimp rate (CP) of the test filament yarn was calculated by the following formula.
  • CP (%) ((L1a ⁇ L2a) / L0) ⁇ 100 (5) Fabric weight A fabric weight (gr / m 2 ) was measured according to JIS L1096.8.5.1 (1999 edition). (6) Abrasion resistance of fabric Abrasion on a plane was determined according to JIS L1096.88.17.3 C method (1999 version). Grade 5 is the highest and Grade 1 is the lowest. (7) Texture of cloth Three testers evaluated by sensory evaluation in three stages: (grade 3) soft, (grade 2) normal, (grade 1) hard.
  • Tensile strength of skin material for vehicle interior member Skin material sample for vehicle interior member based on 8.12.1 standard time, A method (label strip method) described in JIS L1096.8.12 (1999 edition) From the warp direction and weft direction (in the course direction and the wale direction when the sample is a knitted fabric), respectively, and using a textile tensile tester, a grip interval of 200 mm is pulled. The strength at the time of cutting was measured under the condition of a speed of 150 mm / min, and the average value was determined in integers, and was used as the tensile strength of the skin material for vehicle interior members.
  • L-lactic acid had a weight average molecular weight of 150,000, a glass transition point (Tg) of 63 ° C., and a melting point of 180 ° C.
  • Production Example 2 Production of poly D-lactic acid
  • D-lactide manufactured by Musashino Chemical Laboratory, Inc., optical purity 100%
  • octylate was added, and the reaction was carried out at 180 ° C. in a reactor equipped with a stirring blade in a nitrogen atmosphere.
  • Lactic acid had a weight average molecular weight of 150,000, a glass transition point (Tg) of 63 ° C., and a melting point of 180 ° C.
  • Production Example 3 (Production of stereocomplex polylactic acid resin) 50 parts by weight of each of the poly L-lactic acid obtained in Production Example 1 and the poly D-lactic acid of Production Example 2 and a phosphate ester metal salt (2,2-methylenebis (4,6-di-tert-butylphenol phosphate) Sodium salt, average particle diameter of 5 ⁇ m, 0.1 part by weight of “ADEKA STAB” NA-11) manufactured by ADEKA Co., Ltd. (former Asahi Denka Kogyo Co., Ltd.) is kneaded and extruded at a cylinder temperature of 230 ° C. Was cut into chips with a chip cutter to obtain a stereocomplex polylactic acid resin.
  • a phosphate ester metal salt 2,2-methylenebis (4,6-di-tert-butylphenol phosphate) Sodium salt, average particle diameter of 5 ⁇ m, 0.1 part by weight of “ADEKA STAB” NA-11) manufactured by ADEKA Co., Ltd. (form
  • the obtained stereocomplex polylactic acid resin had a weight average molecular weight (Mw) of 135,000, a melting point (Tm) of 217 ° C., and a stereogenicity of 100%.
  • Example 1 (spinning) The stereocomplex polylactic acid resin obtained in Production Example 3 was dried at 110 ° C. for 2 hours and at 150 ° C. for 5 hours to give a moisture content of the resin of 80 ppm, and then a spinneret having 36 holes of 0.27 ⁇ mm was formed. The undrawn yarn was wound up at a speed of 500 m / min after spinning at a spinning temperature of 255 ° C. and a discharge rate of 8.35 g / min.
  • the wound undrawn yarn was drawn 4.9 times with a drawing machine at 80 ° C. by preheating, and the drawn yarn was wound up. Next, the drawn yarn was subjected to ordinary false twist crimping to obtain a polylactic acid false twist crimped yarn (stereo complex polylactic acid filament).
  • the polylactic acid false twist crimped yarn had a fineness of 167 dtex / 36 fil, a crimp rate of 1.4%, a strength of 3.1 cN / dtex, an elongation of 34%, and a melting point of 213 ° C.
  • a backing resin composed of 20% by weight of antimony trioxide, 40% by weight of decabromodiphenyl ether and 40% by weight of acrylic ester resin is applied to one side of the fabric by a conventional method, and the fabric for car seats (Vehicle interior material) was obtained.
  • the coating amount of the backing resin during coating was 100 g / m 2 .
  • the basis weight was 550 g / m 2 and the cover factor was 3534.
  • the tensile strength after exposure for 1,000 hours in an environment of temperature 50 ° C. and humidity 95% RH was 617 N / 50 mm.
  • the L value was 16.
  • Example 2 In Example 1, it carried out similarly to Example 1 except using a jacquard loom using a jacquard loom instead of a dobby woven fabric.
  • the basis weight was 600 g / m 2 and the cover factor was 3816.
  • the tensile strength after exposure for 1,000 hours in an environment of temperature 50 ° C. and humidity 95% RH was 430 N / 50 mm.
  • the L value was 16.
  • Example 1 was the same as Example 1 except that the poly L lactic acid obtained in Production Example 1 was used instead of the stereocomplex polylactic acid resin.
  • the basis weight was 575 g / m 2 and the cover factor was 3711.
  • Example 1 was the same as Example 1 except that the dyeing time for dyeing was changed to 30 minutes.
  • the basis weight was 540 g / m 2 and the cover factor was 3463.
  • the tensile strength after exposure for 1,000 hours in an environment of a temperature of 50 ° C. and a humidity of 95% RH was 325 N / 50 mm and could not be used in actual use.
  • Example 1 was the same as Example 1 except that the dyeing time for dyeing was changed to 20 minutes.
  • the basis weight was 540 g / m 2 and the cover factor was 3463.
  • the tensile strength after exposure for 1,000 hours in an environment of a temperature of 50 ° C. and a humidity of 95% RH was 380 N / 50 mm, which could not withstand actual use.
  • the L value was 15. [Effects of the Invention]
  • a skin material for a vehicle interior member composed of a fabric containing polylactic acid filaments and subjected to a dyeing process, which has excellent fabric strength even after being exposed to a humid heat environment.
  • a skin material for a vehicle interior member having the above is obtained.
  • a vehicle interior member skin material composed of a fabric containing polylactic acid filaments and subjected to a dyeing process, the vehicle having excellent fabric strength even after being exposed to a humid heat environment
  • a skin material for an interior member is provided, and its industrial value is extremely large.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Seats For Vehicles (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)

Abstract

L'invention porte sur un matériau de peau pour un élément intérieur de véhicule, le matériau étant configuré en un tissu qui a été teint et qui contient des filaments de poly(acide lactique). Le matériau de peau pour un élément intérieur de véhicule a une excellente résistance de tissu même après avoir été exposé à un environnement chaud et humide. Il est décrit de façon spécifique un matériau de peau pour un élément intérieur de véhicule, le matériau étant configuré à l'aide d'un tissu qui a été teint et qui contient des filaments de poly(acide lactique), et qui a une résistance à la traction qui n'est pas inférieure à 400 N/50 mm, mesurée selon la norme JIS L1096.8.12 (1999) après avoir été exposé à un environnement à une température de 50°C et à une humidité de 95 % RH pendant 1000 heures.
PCT/JP2010/066105 2009-09-16 2010-09-10 Matériau de peau pour élément intérieur de véhicule Ceased WO2011034155A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381256A (zh) * 2011-09-10 2012-03-21 无锡吉兴汽车声学部件科技有限公司 湿法玻纤滚胶生产顶蓬的工艺

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JPH08311781A (ja) * 1995-03-14 1996-11-26 Mitsui Toatsu Chem Inc 染色法
JP2004218188A (ja) * 2004-04-09 2004-08-05 Nagase & Co Ltd ポリ乳酸染色物の製造方法
JP2005273106A (ja) * 2004-03-26 2005-10-06 Toray Ind Inc 糸条パッケージ
JP2006008871A (ja) * 2004-06-25 2006-01-12 Dystar Japan Ltd ポリ乳酸系繊維用分散染料
JP2008063676A (ja) * 2006-09-05 2008-03-21 Unitica Fibers Ltd ポリエステル系繊維構造物とその製造方法
JP2009030217A (ja) * 2007-07-04 2009-02-12 Teijin Fibers Ltd 染色された布帛の製造方法および布帛および車両内装材

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Publication number Priority date Publication date Assignee Title
JPH08311781A (ja) * 1995-03-14 1996-11-26 Mitsui Toatsu Chem Inc 染色法
JP2005273106A (ja) * 2004-03-26 2005-10-06 Toray Ind Inc 糸条パッケージ
JP2004218188A (ja) * 2004-04-09 2004-08-05 Nagase & Co Ltd ポリ乳酸染色物の製造方法
JP2006008871A (ja) * 2004-06-25 2006-01-12 Dystar Japan Ltd ポリ乳酸系繊維用分散染料
JP2008063676A (ja) * 2006-09-05 2008-03-21 Unitica Fibers Ltd ポリエステル系繊維構造物とその製造方法
JP2009030217A (ja) * 2007-07-04 2009-02-12 Teijin Fibers Ltd 染色された布帛の製造方法および布帛および車両内装材

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381256A (zh) * 2011-09-10 2012-03-21 无锡吉兴汽车声学部件科技有限公司 湿法玻纤滚胶生产顶蓬的工艺

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