WO2003027380A1 - Artificial leather excellent in expandability and method for production thereof - Google Patents
Artificial leather excellent in expandability and method for production thereof Download PDFInfo
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- WO2003027380A1 WO2003027380A1 PCT/JP2002/009456 JP0209456W WO03027380A1 WO 2003027380 A1 WO2003027380 A1 WO 2003027380A1 JP 0209456 W JP0209456 W JP 0209456W WO 03027380 A1 WO03027380 A1 WO 03027380A1
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- Prior art keywords
- artificial leather
- treatment
- shrinkage
- sheet
- shrinkable sheet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/026—Knitted fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- 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
- D06N3/0004—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 ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
-
- 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
- D06N3/0013—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 multilayer webs
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- 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
- D06N3/0025—Rubber threads; Elastomeric fibres; Stretchable, bulked or crimped fibres; Retractable, crimpable fibres; Shrinking or stretching of fibres during manufacture; Obliquely threaded fabrics
- D06N3/0031—Retractable fibres; Shrinking of fibres during manufacture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/02—Thermal shrinking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/10—Fibres of continuous length
- B32B2305/20—Fibres of continuous length in the form of a non-woven mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
- B32B2307/736—Shrinkable
Definitions
- the present invention relates to a method for producing artificial leather having excellent elasticity.
- the artificial leather made of the conventional nonwoven fabric structure has poor elasticity, and has almost no elasticity particularly in the longitudinal direction. For this reason, when conventional artificial leather is used for clothing, it is not possible to make tight-form clothing, and the clothing is limited to slightly larger ones close to the body, and conventional artificial leather is used for materials. In such a case, there is a problem that formability when processing into an automobile sheet or the like is poor.
- the cause of the poor elasticity in the length direction of artificial leather made of a conventional nonwoven fabric structure is that the tension is constantly applied in the length direction in the manufacturing process, and the length is increased. In the width direction, since it is processed in a relatively relaxed state in the manufacturing process, it is easier to impart elasticity than in the length direction. For example, Japanese Patent Publication No.
- Japanese Patent Application Laid-Open Publication No. 2000-330365 suggests a method of performing overheating and heat treatment before dyeing. Since the fabric entangled body is subjected to shrinkage treatment before the greige processing stage, it is extremely difficult to shrink in the length direction by heat treatment, and it is difficult to obtain sufficient elasticity so that the elongation exceeds 15%. It is hard to say that it is common.
- the present invention has the following configuration to solve such a problem.
- the invention of the present application requires that, in artificial leather composed of a fiber entangled body and a polymer elastic body, the elongation rate in the length direction is 15% or more and the elongation recovery rate in the length direction is 80% or more.
- the present invention relates to artificial leather having excellent elasticity characterized by the following. BEST MODE FOR CARRYING OUT THE INVENTION
- the artificial leather excellent in elasticity referred to in the present invention is preferably such that the elongation rate in the length direction is 15% or more, preferably 20% or more, and the elongation recovery rate in the length direction is 80% or more. Or more than 85%. If the elongation rate is less than 15%, artificial leather is sewn on a shawl or the like and worn, so that the “tackiness” is large. If the elongation recovery rate is less than 80%, "elasticity" tends to occur in the stretchable area such as the elbow, which is not preferable.
- the elongation rate in the width direction is 15% or more, preferably 20% or more, and the elongation recovery rate in the width direction is 80% or more, preferably 85% or more. It is preferable to enhance the feeling of wearing.
- the artificial leather having excellent elasticity according to the present invention can enhance the elasticity by forming a polymer layer on the back surface.
- the polymer layer in the present invention refers to a polymer in which a polymer exists on at least one surface of artificial leather in a film-like or lattice-like shape.
- the polymer elastic material used in the present invention may be any material such as vinyl acetate resin, acryl resin, natural rubber, polyurethane resin, and epoxy resin, as long as it is used as a component of the adhesive. Is particularly preferred because of its excellent stretchability and practicality.
- the method for producing an artificial leather having excellent elasticity according to the present invention will be described below.
- an ultrafine fiber or a fiber web which can be made ultrafine and a shrinkable sheet are overlapped and entangled, for example, by a 21 dollar punch or a water jet punch.
- the sheet obtained by performing a treatment including an ultrafine treatment, a polymer elastic body treatment, and a napped treatment is heat-treated, and the contraction force of the contractible sheet is used. After shrinking the sheet lengthwise and / or widthwise, the shrinkable sheet is removed.
- the treatment including the above-described ultrafine treatment, polymer elastic body applying treatment, and napping treatment
- the polymer elastic body applying treatment is performed, and then the napping treatment is performed.
- polystyrene resin examples include polyamides such as nylon 6, nylon 66, nylon 12, copolymer nylon, polyethylene phthalate, polybutylene phthalate, polypropylene terephthalate, and polypropylene.
- polyesters such as copolymers thereof, but are not particularly limited.
- the fineness of the fiber is preferably not less than O. O O O I dtex and not more than 0.9 dtex. If the fineness of the fiber exceeds 0.9 dtex, it is difficult to obtain a soft touch on the surface unique to artificial leather, which is not preferable. If the fineness of the fiber is less than 0.001 dteX, the fiber strength is undesirably low.
- Examples of the combination of ultrafine fibers and polymers that can be dissolved or removed or separated and separated by physical and chemical actions include polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, and / or copolymers thereof.
- Polyesters such as polyesters, nylon 6, nylon 66, nylon 12, and copolymer nylon, and polyolefins such as polyethylene and polystyrene can be used in appropriate combination.
- a knitted fabric or a shrinkable film can be used as the shrinkable sheet used in the method for producing an artificial leather having excellent stretchability of the present invention, and any structure such as a plain weave or a saori can be used as the knitted fabric.
- high shrinkage refers to integrated Under a single processing condition (temperature, atmosphere), it means that it shrinks by 10% or more, preferably 15% or more by single treatment.
- the yarn constituting the knitted fabric a synthetic fiber yarn such as polyester or polyamide is used.
- the use of a high shrinkage yarn can increase the shrinkage when the sheet is shrunk in the length direction and / or the width direction by heat treatment, thereby improving the elasticity of the artificial leather.
- the high shrinkage yarn means a yarn having a boiling water shrinkage ratio or dry heat shrinkage ratio of 5% or more, preferably 10% or more.
- the number of twists of the yarn is preferably at least 700 T / m, more preferably at least 100 T / m and no more than 400 TZm, More preferably, the value is not less than 0 0 TZ m and not more than 3 00 T / m. If the number of twists is less than 700 TZm, the yarn damage due to the stimulus during needle punching becomes large, which is not preferable. If the number of twists exceeds 400 T / m, the processing limit and economic It is not preferable in respect of the point. Further, if a strong twist yarn is used, the sheet can be contracted in the length direction and / or the width direction by the untwisting torque at the time of heat treatment.
- the fiber entangled sheet used in the present invention for example, there is a method in which short fibers of ultrafine conjugate fibers are formed into a web and re-sheeted by an entanglement means such as a needle punch or a water jet punch.
- an entanglement means such as a needle punch or a water jet punch.
- it is not particularly limited.
- the ultrafine fibers can be expressed by desealing treatment with sea-island type fibers, mechanical treatment such as scraping, beating, or the like with split type fibers.
- a polymer elastic body is provided to the fiber entangled body containing the ultrafine fibers, the ultrafine fiber bundle, or the conjugate fiber which can be made ultrafine.
- the polymer elastic body may be applied before or after the ultrafine treatment of the ultrafine composite fiber.
- high molecular elastomers include polyurethane elastomer, polyurethane elastomer, polyurethane 'polyurea elastomer, polyacrylic resin, acrylonitrile butadiene elastomer, and styrene' butadiene elastomer.
- polyurethane elastomers such as polyurethane elastomer, polyurethane elastomer, and polyurethane'polyurea elastomer are preferred.
- these polyurethane elastomers include, for example, at least one selected from polymer diols having an average molecular weight of 500 to 350, such as polyester diol, polyether diol, polyester polyether diol, polylactone diol, and polycarbonate diol. It is preferable to use one type. From the viewpoint of durability of the product, more preferably, a polyurethane using a polymer diol containing 30% by weight or more of polycarbonate diol is preferred. If the poly-ponate diol is less than 30% by weight, the durability is undesirably reduced.
- the polycarbonate diol referred to in the present invention is a polycarbonate diol having a diol skeleton linked via a carbonate bond to form a polymer chain and having hydroxyl groups at both ends.
- the diol skeleton is determined by the glycol used as a raw material, but the type thereof is not particularly limited. For example, 1,6-hexanediol, 1,5-pentanediol, neopentyl glycol, —Methyl-1,5-pentanediol can be used.
- a copolymerized polycarbonate diol using at least two or more dalicols selected from the dalicol group as a raw material is preferable because an artificial leather having particularly excellent flexibility and appearance can be obtained.
- a bond other than a carbonate bond for example, an ester bond, an ether bond, or the like into the polymer diol within a range that does not impair the durability.
- a method in which a mixture of polycarbonate diol and other polymer diols, each of which is independently polymerized, may be used in combination at an appropriate ratio during polymerization of the polyurethane may be employed.
- the coating amount of the polymer elastic body is preferably in the range of 10 to 70% by weight as a solid content with respect to the fiber weight from the viewpoint of the flexibility of the product, surface touch, and uniformity of dyeing. If the amount is less than 10% by weight, the abrasion tends to decrease. If the amount exceeds 70% by weight, the feeling becomes hard, and the sheet shrinkage during heat treatment is suppressed, resulting in a sufficient shrinkage effect. , It is difficult to obtain the effect of imparting stretchability.
- additives such as a colorant, an antioxidant, an antistatic agent, a dispersant, a softener, and a coagulation regulator may be distributed in the elastic polymer.
- a method of forming a c fiber napped surface to form a fiber napped surface was napped processing at least one surface of the seed, use various methods such as puffing by sandpaper.
- artificial elastic leather with silver may be formed by coating a polymer elastic material such as polyurethane on the fiber raised surface.
- the above sheet is heat-treated and contracted by the contraction force of the knitted fabric.
- the heat treatment can be performed using a hot-air heating device, a steam heating device, a liquid jet dyeing machine such as a Circulara or Uniace, a tumbler or a relaxer.
- Heat treatment with rubbing treatment with a jet dyeing machine can accelerate the shrinkage of the sheet.
- the heat treatment temperature is a temperature at which the contraction force of the re-knitted fabric having a flexible sheet is developed, or a temperature at which the untwisting torque is generated in the case of a twisted knitted fabric.
- a temperature it is appropriate to arbitrarily select a temperature in the range of 100 ° G to 135 ° C.
- the sheet shrinks in length and width or width due to the heat treatment and the action of the knitted fabric entangled and integrated with the nonwoven fabric.
- Dyeing may be performed simultaneously with the heat treatment or may be performed after the heat treatment.
- the knitted fabric is removed from the artificial leather to develop elasticity in the length direction and / or the width direction.
- the shrinkable sheet includes a sheet that shrinks in area by heating, such as a knitted fabric made of a shrinkable film or a polyester-based highly shrinkable yarn, and a knitted fabric made of a polyamide yarn.
- a sheet whose area can be contracted using an emulsion of benzyl alcohol or phenylethyl alcohol can be used.
- the shrinkage of the shrinkable sheet is 10% or more in the length direction, and preferably ⁇ 15%.
- shrinkage is less than 10%, it is difficult to provide an artificial leather with an elongation of 15% or more, which is not preferable. If a shrinkable sheet that shrinks by 10% or more in both the length direction and the width direction is used, it is possible to impart elasticity to both the length direction and the width direction.
- polyvinyl chloride, polyethylene, polystyrene, polyethylene terephthalate, and the like can be appropriately selected.
- the shrinkage of the shrinkable film can be increased, and the shrinkage rate can be increased when the shrinkable film is adhered to artificial leather and then subjected to shrinkage treatment.
- unstretched yarn of polyesters such as polyethylene terephthalate, polybutylene terephthalate, polypropylene phthalate or a copolymer thereof, or by reducing the draw ratio. It is possible to use a resin having a higher shrinkage or a resin having a higher shrinkage by adding a copolymer component such as isophthalic acid.
- Polyamides such as nylon 6, nylon 66, nylon 12, and copolymerized nylon can be used as the polymer forming the polyamide yarn.
- Knitted fabrics made of polyester-based high shrinkage yarns or knitted fabrics made of polyamide yarns may be used in any structure, such as plain weave or saori, but heat treatment is minimized to minimize shrinkage. Woven so as not to lower it is preferred.
- the artificial leather and the shrinkable sheet are adhered by an adhesive.
- the adhesive used in the present invention may be any one such as a vinyl acetate resin, an acrylic resin, a natural rubber, a polyurethane resin, and an epoxy resin.
- Adhesives that can be bonded without heating, such as adhesives, are preferable, and among them, wet coagulation-type polyurethane resin-based adhesives are particularly preferable because of their excellent stretchability and practicality.
- an adhesive that re-adheres by heating if heated above the temperature at which the shrinkable sheet shrinks, only the shrinkable sheet shrinks before the artificial leather and the shrinkable sheet completely adhere.
- the artificial leather and the shrinkable sheet are easily peeled off, it is advisable to select an adhesive that can be bonded at a low temperature or apply a method of bonding at a low temperature over time.
- the repellent used in the present invention may be completely removed using a method such as washing with water or grinding, but if it is finally left as a polymer layer on at least one surface of the artificial leather, the artificial agent may be removed. Since the elasticity of leather can be controlled, the shape of the polymer layer is also important.
- the shape of the polymer layer is a film shape, a dot shape, a lattice shape, or the like, and can be adjusted by a method of applying an adhesive.
- the adhesive layer can be formed into a film form.
- an adhesive made of a polymer elastic material as the adhesive, a film-like layer of the polymer elastic material can be formed, and the elongation recovery rate of the artificial leather can be improved.
- the polymer elastic film surface is used as the product surface, it can be used for a wider range of uses as artificial leather with silver having excellent elasticity.
- the adhesive composed of a polymer elastic body it is preferable to use a polyurethane resin-based adhesive in terms of excellent stretchability and practicality. Further, the type of the polymer used for the adhesive and the thickness of the film can be appropriately selected according to the required elasticity.
- a point bonding method in which an adhesive is applied in a number of dots to form a dotted adhesive layer, or an adhesive method in which an adhesive is applied in a pattern such as a grid to form a grid-shaped adhesive layer is used. If used, it is also possible to intentionally form irregularities on the artificial leather surface after shrinkage.
- the sheet in which the artificial leather and the shrinkable sheet are bonded and integrated is shrunk.
- the shrinkage at this time is preferably 10% or more in the length direction in order to give the artificial leather an elongation of 15% or more.
- the shrinkage can be controlled by the heating temperature during the shrinkage treatment, the shrinkage of the shrinkable sheet and the shrinkage force.
- the shrinking force can be adjusted depending on the kind of the polymer or the film thickness.
- the sample to be treated is treated with an emulsion of benzyl alcohol or phenylethyl alcohol to shrink
- the sample to be treated is immersed in an emulsion at room temperature and then immersed in hot water.
- Treat with an emulsified solution of benzyl alcohol or phenylethyl alcohol such as immersing the treated sample in a heated emulsion, or immersing the sample to be treated in the emulsion and gradually heating to heat.
- Process and A shrinking method applied in combination with a heating step is preferable.
- the artificial leather shrinks due to the contraction force of the shrinkable sheet, so that the ultrafine fibers constituting the artificial leather form a buckled structure. Therefore, by subsequently removing the shrinkable sheet, an artificial leather having excellent elasticity can be obtained.
- Methods for removing the shrinkable sheet after shrinking the sheet in which the artificial leather and the shrinkable sheet are bonded and integrated include methods such as mechanical peeling, sandpaper grinding, or slicing. Can be used.
- the shrinkable sheet When the shrinkable sheet is removed, a part of the adhesive is left on the artificial leather and a polymer layer is formed on the surface of the artificial leather, so that the elasticity of the artificial leather can be adjusted, and the polymer layer is high. If the layer is in the form of a film or lattice of a molecular elastic material, the elongation recovery rate can be improved. If the touch or appearance is a problem, the polymer layer may be removed by sanding or slicing to the extent that the elasticity is not impaired. As a method to control the elasticity when removing the adhesive by grinding, slicing, or washing with a water-based adhesive followed by shrinkage treatment, it is also necessary to heat set the fiber before removing the shrinkable sheet Can be applied according to Example
- a composite fineness consisting of polyethylene terephthalate as the island component and polystyrene as the sea component is 4.0 dte X
- the island fineness is 0.20 dte X
- raw cotton of high molecular inter-array fiber with a fiber length of 51 mm is used.
- Fiber woven by rubbing Toray Co., Ltd. strong twisted yarn (84 T-72 f-265, twist number 2500 T / m) on both sides of the laminated web Plain weave fabrics woven to 0 ⁇ 30 fabrics / cm were stacked, and needle punching of 250 Gm 2 was performed to produce a nonwoven fabric sheet in which the fabrics were entangled and integrated.
- This sheet is immersed in boiling water to shrink it, and then polyvinyl alcohol is applied. Then, the sea component is dissolved and removed with trichlene to develop ultrafine fibers.
- Poly (dimethylene glycol) and poly (propylene glycol) are used as polymer diols. 75:25 mixture of ethylene glycol, 4,4'-diphenylmethanediisocyanate as diisocyanate, and methylene bisaniline as chain extender. Approximately 30% by weight was sliced at the center, and the sliced surface was brushed with a buffing machine.
- Example 3 An artificial leather was obtained in the same manner as in Example 1 except that the woven fabric was sliced and removed by a slicing machine. The evaluation results are as shown in Tables 1 and 2.
- Example 3 An artificial leather was obtained in the same manner as in Example 1 except that the woven fabric was sliced and removed by a slicing machine. The evaluation results are as shown in Tables 1 and 2.
- Example 3 The same method as in Example 3 except that Toray Co., Ltd.'s 84 T-124-143 (twisted number: 2500 TZm), which is a high shrink yarn, is used as the weft yarn of the knitted fabric.
- An artificial leather was obtained in the above, and the length and width shrunk by about 15% due to the heat treatment during dyeing. The evaluation results are shown in Tables 1 and 2. Comparative Example 1
- Example 5 An artificial leather was obtained in the same manner as in Comparative Example 2 except that the same raw cotton as in Example 3 was used. The evaluation results are as shown in Tables 1 and 2. Example 5
- a 70:30 mixture of polyhexamethylene carbonate glycol and polyneopentyl adipate as the ultrafine fiber component is polyethylene terephthalate and the polymer elastic body is a polymer diole, and 4,4 'diphenylmethane diisocyanate is a diisocyanate.
- a durable polycarbonate-based polyurethane made of isocyanate and ethylene glycol as a chain extender and made in a conventional manner, with elongation of 79% in the length direction and width direction.
- Example 5 except that a plain woven fabric of polyethylene terephthalate having a boiling water shrinkage of 17.3% in the length direction, 17.2% in the width direction, a basis weight of 26.4, and a thickness of 0.1 mm was used as the shrinkable sheet.
- An artificial leather was obtained in the same manner as described above. Thus obtained Tables 1 and 2 show the evaluation results of the artificial leather.
- Example 7
- the artificial method is the same as that of Example 5 except that a plain woven fabric of a nylon yarn is used as the shrinkable sheet, and a method of immersing in benzyl alcohol emulsion at room temperature and then immersing in boiling water is used as the shrinking method.
- the shrinkage of the plain fabric of the Ny knit yarn by benzyl alcohol treatment was 21.2% in the length direction and 13.0% in the width direction.
- Tables 1 and 2 show the evaluation results of the artificial leather thus obtained.
- Example 9 An artificial leather was obtained in the same manner as in Example 5, except that the ultrafine fiber component was nylon 6. Tables 1 and 2 show the evaluation results of the obtained artificial leather. Example 9
- Example 4 The same method as in Example 5 except that an aqueous acrylic adhesive was used as the adhesive, shrinkage and heat setting were performed at 180 ° C with dry heat, the shrinkable sheet was peeled off, and the adhesive was washed off with water. To obtain artificial leather. The evaluation results are shown in Tables 1 and 2. Comparative Example 4
- Example 5 The same method as in Example 5 was adopted except that a plain woven fabric of polyethylene terephthalate having a boiling water shrinkage of 6.0% in the length direction and 3.7% in the width direction, a basis weight of 70 g / nrf, and a thickness of 0.2 mm was used. An artificial leather was obtained. Tables 1 and 2 show the evaluation results of the artificial leather thus obtained. Fiber entangled body Shrinkable sheet Shrink treatment of integrated sheet
- Example 1 0.2 PET 247 Strong twisted woven fabric 6.0 / 3.7 70 120 ° C liquid flow 14.8 / 0 Sea component removal Entanglement
- Example 2 0.2 PET ET 6 6 Strong twisted woven fabric 6.0 / 3.7 70 120 ° C liquid flow 14.8 / 0 Sea component removal Entanglement
- Example 3 0.04 PET 216 Strong twisted yarn fabric 6.0 / 3.7 70 12 CTC liquid flow 14.6 / 0 Sea component removal Entanglement
- Example 4 0.04 PET 358 High shrinkage fabric 6.6 / 16.5 69 120 ° C liquid flow 14.5 / 12.0 Sea component removal Entanglement Comparative Example 1 0.2 PET 255 Strong twisted yarn fabric 6.0 / 3.7 70 120 ° C liquid flow 14.8 / 0 Not removed Sea component removal Entanglement Comparative Example 2 0.2 PET 322 Sea component removal
- Example 5 0.04 PET 172 Shrinkage 45.8 / 47.6 48.4 Boiling water 22.2 / 23.8 Peeling Removal of sea components
- Adhesive Example 6 0.04 PET 1 65 High shrink PET fabric 17.3 / 17.2 26.4 Boiling water 13.2 / 14.7 Peeling Removal of sea components
- Adhesion Example 7 0.04 PET 170 N6 woven fabric-/-40 Chemical treatment 15/6 Peeling Removal of sea component
- Example 8 0.04 N6 140 Shrinkable film 45.8 / 47.6 48.4 Boiling water 24.3 / 26.6 Peeling Sea component removal
- Example 9 0.04 PET 1 72 Shrinkage 42.1 /45.5 45.2 180 ° G dry heat 23.1 1 / 22.8 Peeling Sea component removal Adhesion Comparative Example 4 0.2 PET 1 70 Strong twisted yarn fabric 6/4 70 Boiling water 1.3 / 0.2 Peeling Sea Component removal Adhesion
- the artificial leather with excellent elasticity makes it possible to apply to clothing that has been difficult in the past for clothing (such as tight forms that require elasticity). And formability when processing into automobile seats and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/490,158 US20040241346A1 (en) | 2001-09-20 | 2002-09-13 | Artificial leather excellent in elasticity and method of manufacturing the same |
| KR1020047004074A KR100919239B1 (ko) | 2001-09-20 | 2002-09-13 | 신축성이 뛰어난 인공피혁 및 그 제조방법 |
| EP02765546A EP1437440B1 (en) | 2001-09-20 | 2002-09-13 | Artificial leather excellent in expandability and method for production thereof |
| HK04107809.2A HK1065078B (en) | 2001-09-20 | 2002-09-13 | Artificial leather excellent in expandability and method for production thereof |
| US12/076,198 US20080173387A1 (en) | 2001-09-20 | 2008-03-14 | Method of manufacturing artificial leather excellent in elasticity |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001287130A JP3826752B2 (ja) | 2001-09-20 | 2001-09-20 | 伸縮性に優れた人工皮革とその製造方法 |
| JP2001-287129 | 2001-09-20 | ||
| JP2001287129A JP2003089984A (ja) | 2001-09-20 | 2001-09-20 | 伸縮性に優れた人工皮革およびその製造方法 |
| JP2001-287130 | 2001-09-20 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/076,198 Division US20080173387A1 (en) | 2001-09-20 | 2008-03-14 | Method of manufacturing artificial leather excellent in elasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003027380A1 true WO2003027380A1 (en) | 2003-04-03 |
Family
ID=26622601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/009456 Ceased WO2003027380A1 (en) | 2001-09-20 | 2002-09-13 | Artificial leather excellent in expandability and method for production thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080173387A1 (ja) |
| EP (1) | EP1437440B1 (ja) |
| KR (1) | KR100919239B1 (ja) |
| CN (1) | CN1300410C (ja) |
| TW (1) | TWI220908B (ja) |
| WO (1) | WO2003027380A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014034780A1 (ja) * | 2012-08-31 | 2014-03-06 | 東レ株式会社 | 人工皮革用基体 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4935721B2 (ja) | 2007-03-19 | 2012-05-23 | 東レ株式会社 | 伸縮性シートとその製造方法 |
| JP5186353B2 (ja) * | 2007-12-28 | 2013-04-17 | ヤマハ発動機株式会社 | 装飾用シート、加飾成形品、装飾用シートの製造方法および加飾成形品の製造方法 |
| CN104145058B (zh) * | 2012-02-29 | 2016-08-24 | 可乐丽股份有限公司 | 伸缩性人造革及其制造方法 |
| KR102255796B1 (ko) * | 2014-03-31 | 2021-05-25 | 도레이 카부시키가이샤 | 인공 피혁과 그의 제조 방법 |
| CN109866494B (zh) * | 2017-12-04 | 2021-12-21 | 三芳化学工业股份有限公司 | 复合布料 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247901A (en) * | 1975-10-09 | 1977-04-16 | Lonseal Kogyo Kk | Production of synthetic leather |
| US4515854A (en) | 1983-05-13 | 1985-05-07 | Kuraray Co., Ltd. | Entangled fibrous mat having good elasticity and methods for the production thereof |
| JPS61132684A (ja) | 1984-11-30 | 1986-06-20 | Asahi Chem Ind Co Ltd | 着用感の優れた人工皮革及びその製造方法 |
| JPS62289602A (ja) | 1986-06-05 | 1987-12-16 | 株式会社クラレ | 人工皮革製すね当て |
| JPS62289603A (ja) | 1986-06-05 | 1987-12-16 | 株式会社クラレ | 人工皮革製手袋 |
| JP2000303365A (ja) | 1999-04-14 | 2000-10-31 | Toray Ind Inc | ストレッチ性のあるスエード調人工皮革とその製造方法 |
| JP2000336581A (ja) * | 1999-05-28 | 2000-12-05 | Toray Ind Inc | 伸縮性皮革様物 |
| JP2001164477A (ja) | 1999-12-08 | 2001-06-19 | Teijin Ltd | 伸縮性を有する合成皮革 |
| JP2001214377A (ja) * | 2000-02-04 | 2001-08-07 | Kuraray Co Ltd | 皮革様シートおよびその製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639154A (en) * | 1968-07-20 | 1972-02-01 | Kanegafuchi Spinning Co Ltd | Process for manufacturing fibrous structure having excellent recovery from extension by treatment with polyorganosiloxane and a polyethylene glycol or derivative thereof |
| JPS539301A (en) * | 1976-07-12 | 1978-01-27 | Mitsubishi Rayon Co | Production of leather like sheet structre |
| US5238733A (en) * | 1991-09-30 | 1993-08-24 | Minnesota Mining And Manufacturing Company | Stretchable nonwoven webs based on multi-layer blown microfibers |
| JP3128333B2 (ja) * | 1992-06-08 | 2001-01-29 | 株式会社クラレ | 柔軟なスエード調人工皮革及びその製造方法 |
| JP3142099B2 (ja) * | 1993-11-24 | 2001-03-07 | 株式会社クラレ | 平滑な皮革様シート状物の製造方法 |
| KR0140491B1 (ko) * | 1994-12-28 | 1998-06-15 | 백영배 | 부직포 인공피혁의 제조방법 |
| US6159581A (en) * | 1997-09-24 | 2000-12-12 | Kuraray Co., Ltd. | Leather-like sheet |
| WO1999024656A1 (en) * | 1997-11-07 | 1999-05-20 | Toray Industries, Inc. | Nubuck-type artificial leather and process for the production thereof |
| WO2000060159A1 (fr) * | 1999-03-31 | 2000-10-12 | Kuraray Co., Ltd. | Feuille rappelant le cuir et son procede de fabrication |
-
2002
- 2002-09-13 CN CNB028184114A patent/CN1300410C/zh not_active Expired - Fee Related
- 2002-09-13 EP EP02765546A patent/EP1437440B1/en not_active Expired - Lifetime
- 2002-09-13 WO PCT/JP2002/009456 patent/WO2003027380A1/ja not_active Ceased
- 2002-09-13 KR KR1020047004074A patent/KR100919239B1/ko not_active Expired - Fee Related
- 2002-09-19 TW TW091121401A patent/TWI220908B/zh active
-
2008
- 2008-03-14 US US12/076,198 patent/US20080173387A1/en not_active Abandoned
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247901A (en) * | 1975-10-09 | 1977-04-16 | Lonseal Kogyo Kk | Production of synthetic leather |
| US4515854A (en) | 1983-05-13 | 1985-05-07 | Kuraray Co., Ltd. | Entangled fibrous mat having good elasticity and methods for the production thereof |
| JPS61132684A (ja) | 1984-11-30 | 1986-06-20 | Asahi Chem Ind Co Ltd | 着用感の優れた人工皮革及びその製造方法 |
| JPS62289602A (ja) | 1986-06-05 | 1987-12-16 | 株式会社クラレ | 人工皮革製すね当て |
| JPS62289603A (ja) | 1986-06-05 | 1987-12-16 | 株式会社クラレ | 人工皮革製手袋 |
| JP2000303365A (ja) | 1999-04-14 | 2000-10-31 | Toray Ind Inc | ストレッチ性のあるスエード調人工皮革とその製造方法 |
| JP2000336581A (ja) * | 1999-05-28 | 2000-12-05 | Toray Ind Inc | 伸縮性皮革様物 |
| JP2001164477A (ja) | 1999-12-08 | 2001-06-19 | Teijin Ltd | 伸縮性を有する合成皮革 |
| JP2001214377A (ja) * | 2000-02-04 | 2001-08-07 | Kuraray Co Ltd | 皮革様シートおよびその製造方法 |
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| Title |
|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014034780A1 (ja) * | 2012-08-31 | 2014-03-06 | 東レ株式会社 | 人工皮革用基体 |
| JPWO2014034780A1 (ja) * | 2012-08-31 | 2016-08-08 | 東レ株式会社 | 人工皮革用基体 |
| US10626548B2 (en) | 2012-08-31 | 2020-04-21 | Toray Industries, Inc. | Base body for artificial leather |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1065078A1 (en) | 2005-02-08 |
| EP1437440A1 (en) | 2004-07-14 |
| CN1300410C (zh) | 2007-02-14 |
| TWI220908B (en) | 2004-09-11 |
| KR100919239B1 (ko) | 2009-09-30 |
| EP1437440B1 (en) | 2012-11-07 |
| CN1556882A (zh) | 2004-12-22 |
| KR20040044963A (ko) | 2004-05-31 |
| EP1437440A4 (en) | 2009-09-16 |
| US20080173387A1 (en) | 2008-07-24 |
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