WO2017035685A1 - 一种具有密度梯度结构的超细纤维合成革的生产方法 - Google Patents

一种具有密度梯度结构的超细纤维合成革的生产方法 Download PDF

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Publication number
WO2017035685A1
WO2017035685A1 PCT/CN2015/000919 CN2015000919W WO2017035685A1 WO 2017035685 A1 WO2017035685 A1 WO 2017035685A1 CN 2015000919 W CN2015000919 W CN 2015000919W WO 2017035685 A1 WO2017035685 A1 WO 2017035685A1
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Prior art keywords
finished product
synthetic leather
semi
tank
solvent
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PCT/CN2015/000919
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English (en)
French (fr)
Chinese (zh)
Inventor
顾宇霆
张鹏
林天送
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安安(中国)有限公司
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Priority to KR1020167024140A priority Critical patent/KR20170041654A/ko
Priority to JP2016544572A priority patent/JP2018531327A/ja
Publication of WO2017035685A1 publication Critical patent/WO2017035685A1/zh

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • D06N3/12—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825—Composite fibres
    • D04H1/4383—Composite fibres sea-island
    • 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
    • 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
    • D06N3/0011—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 non-woven fabrics
    • 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
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments

Definitions

  • the invention relates to the technical field of microfiber synthetic leather, in particular to a method for producing ultrafine fiber synthetic leather having a density gradient structure.
  • Microfiber synthetic leather is the highest-end synthetic material that replaces the leather. It has unparalleled advantages in physical and chemical properties, simulation performance and wearing comfort.
  • the current microfiber synthetic leather products have a uniform density distribution in the structure, and the apparent density is lower than that of the dermis, so there is a large influence on the degree of simulation.
  • the density structure of the dermis is gradient, with the highest density of the surface layer, and then gradually decreases downward. Therefore, the surface of the dermis is dense, the pattern is fine, and the base part is soft and soft, and the comprehensive effect has both delicate and dense appearance lines and a full and soft hand feeling.
  • the technical problem to be solved by the present invention is to change the structure of the uniform density of the conventional microfiber synthetic leather to form a structure having a gradient density similar to that of the dermis, thereby obtaining a microfiber synthetic leather having a fine and dense surface and a full and soft hand.
  • the production method introduces a solventless polyurethane application, so that the solventless polyurethane penetrates into the surface layer of the microfiber non-woven fabric to form a dense layer, and then performs impregnation, reduction, and finishing processes to finally form a skin dense layer similar to dermis. Structure with density gradient.
  • the method for producing a microfiber synthetic leather having a density gradient structure according to the present invention comprises the following steps:
  • Island microfiber processing firstly, sea component slices (such as polyethylene, water-soluble polyester, water-soluble cellulose and polypropylene, etc.) and island component slices (such as polyamide chips, polyester chips) Raw materials are made into island ultrafine fibers through spinning production process; spinning production The process comprises spinning by means of mixed melt spinning or composite spinning, and the nascent filaments are cooled and formed under the special air conditioning ring blowing condition; in order to optimize the spinnability and physical properties of the yarn, the yarn is oiled and utilized The drafting action of the drafting roller increases the uniformity of the polymer molecules inside the yarn, and the internal structure of the yarn bar basically meets the requirements.
  • sea component slices such as polyethylene, water-soluble polyester, water-soluble cellulose and polypropylene, etc.
  • island component slices such as polyamide chips, polyester chips
  • the wire is conveyed during the conveying process.
  • the internal structure, physical properties and the appearance shape of the yarn are up to the production requirements and stable.
  • the last thread is then cut through the guide wire frame, the traction tension machine and the cutting machine to set the length, and the finished wire enters the baler through the air supply pipe to complete the packaging;
  • Non-woven fabric production use the opener to put the island microfiber into the opening mixer for opening and mixing, and add specific oil (palm oil, emulsifier, antistatic agent) to include anti-static Optimization of the spinnability, then enter the carding machine for fiber combing, the carded fibers are laid into the net through the feeding device into a high-precision paving machine, and the web of highly uniform thickness and density passes through the needle machine or water at a constant speed.
  • the lancet machine under the action of a needle or a water needle, entangles the fibers inside the web to form a non-woven fabric with stable structure and physical properties; the nonwoven fabric is fixed by thickness and shape by heat setting, and finally a styling nonwoven fabric is finally formed. ;
  • Solvent-free polyurethane coating Firstly, the A component and the B component of the solventless polyurethane are instantaneously mixed at a fixed temperature under a certain temperature condition, and coated on the surface of the shaped nonwoven fabric, the two components. After mixing, the cross-linking curing begins to penetrate into the surface layer of the nonwoven fabric, and is further cured by an oven at a certain temperature to form a semi-finished product; wherein the component A of the solvent-free polyurethane is a solvent-free polyether or a solvent-free polyester.
  • the B component of the solventless polyurethane is a solventless isocyanate and a prepolymer of a polyether or a polyester; the A component and the B component are mixed in a ratio of 1:9 to 9:1;
  • Impregnation treatment of semi-finished products after coating firstly, the polyurethane resin and the auxiliary agent are mixed, diluted to a certain viscosity and injected into the impregnation tank; then the semi-finished product of the coating is subjected to impregnation rolling liquid through the impregnation tank; finally, the base fabric containing the slurry Curing process, curing by solvent replacement Or drying or salt curing to solidify the resin, and forming the impregnated semi-finished product by an impregnation process;
  • the island microfibers dissolve the sea components by alkali reduction or solvent reduction or hot water reduction:
  • Alkali reduction method the impregnated semi-finished product is sent to a reducing tank, the tank is filled with a heated alkali solution, the sea component is dissolved by a multi-tank alkaline solution, and washed with hot water to realize the opening of the ultrafine fiber. , making semi-finished products;
  • Solvent reduction method the impregnated semi-finished product is sent to a reducing tank, which is filled with a heated solvent (toluene or xylene), and the sea component is dissolved by a multi-tank solvent, and washed with hot water to achieve ultrafine Opening of the fiber to produce a semi-finished product;
  • a heated solvent toluene or xylene
  • Hot water reduction method the impregnated semi-finished product is sent to a reducing tank, the tank is filled with heated water, and the multi-tank hot water is dissolved to realize the opening of the ultra-fine fiber to obtain a semi-finished product;
  • microfiber synthetic leather substrate production and finished product manufacturing open semi-finished products for drying and oiling stereotypes, and then through the process of suede, microdermabrasion and other microfiber synthetic leather substrate production, the basis
  • the material can be produced by a combination of dyeing, veneering, surface treatment, printing, etc., and finally made into a finished product of microfiber synthetic leather.
  • the method for producing ultrafine fiber synthetic leather having a density gradient structure comprises infiltration of a solventless polyurethane into a dense layer of a surface of a microfiber nonwoven fabric, and then performing an impregnation, a reduction, and a finishing process to finally form a surface layer density. The highest, then gradually downward, similar to the dense layered structure of the dermis with a density gradient.
  • the finished microfiber synthetic leather has a dense surface and fine texture, and the base part is soft and soft.
  • the comprehensive effect has both delicate and dense appearance lines and a full and soft hand feeling, which greatly improves the microfiber.
  • the quality of synthetic leather products comprises infiltration of a solventless polyurethane into a dense layer of a surface of a microfiber nonwoven fabric, and then performing an impregnation, a reduction, and a finishing process to finally form a surface layer density. The highest, then gradually downward, similar to the dense layered structure of the dermis with a density gradient.
  • the finished microfiber synthetic leather has
  • Figure 1 is a schematic view of step 1 of the present invention
  • Figure 2 is a schematic view of step 2 of the present invention
  • Figure 3 is a schematic view of step 3 of the present invention
  • Figure 4 is a schematic view of step 4 of the present invention
  • Figure 5 is a schematic view of step 5 of the present invention
  • Figure 6 is a schematic view of step 6 of the present invention
  • the method for producing a microfiber synthetic leather having a density gradient structure according to the present invention comprises the following steps:
  • Island microfiber processing firstly, sea component slices (such as polyethylene, water-soluble polyester, water-soluble cellulose and polypropylene, etc.) and island component slices (such as polyamide chips, polyester chips)
  • sea component slices such as polyethylene, water-soluble polyester, water-soluble cellulose and polypropylene, etc.
  • island component slices such as polyamide chips, polyester chips
  • the raw material is made into island ultrafine fiber through a spinning production process; the spinning production process comprises spinning by means of mixed melt spinning or composite spinning, and the nascent filament is cooled and formed under the special air conditioning ring blowing condition; in order to optimize the yarn
  • the spinnability and physical properties of the yarn are oiled, and the drafting action of the drafting roller is used to improve the uniformity of the polymer molecules inside the yarn.
  • the internal structure of the yarn is basically satisfactory.
  • the wire is conveyed during the conveying process.
  • the internal structure, physical properties and the appearance shape of the yarn are up to the production requirements and stable.
  • the last thread is then cut through the guide wire frame, the traction tension machine and the cutting machine to set the length, and the finished wire enters the baler through the air supply pipe to complete the packaging;
  • Non-woven fabric production use the opener to put the island microfiber into the opening mixer for opening and mixing, and add specific oil (palm oil, emulsifier, antistatic agent) to make spinnability such as antistatic. Optimization, and then enter the carding machine for fiber combing, the carded fibers are laid into the net through the feeding device into a high-precision paving machine, and the web of uniform thickness and density is passed through the needle machine or spunlace at a constant speed. The fibers inside the web are entangled with each other under the action of a needle or a water needle to form a nonwoven fabric having stable structure and physical properties; the nonwoven fabric is fixed in thickness and shape by heat setting;
  • Solvent-free polyurethane coating Firstly, the A component and the B component of the solvent-free polyurethane are instantaneously mixed at a fixed temperature under a certain temperature condition, and coated on the nonwoven. On the surface of the cloth, the two components are mixed and then cross-linked and cured, and simultaneously penetrate into the surface layer of the nonwoven fabric, and further cured by an oven under a certain temperature condition to form a semi-finished product; wherein the A component of the solvent-free polyurethane is solvent-free.
  • the B component of the solventless polyurethane is a solventless isocyanate and a prepolymer of a polyether or a polyester; the A component and the B component are mixed in a ratio of 1:9 to 9:1. ;
  • Impregnation treatment of semi-finished products after coating firstly, the polyurethane resin and the auxiliary agent are mixed, diluted to a certain viscosity and injected into the impregnation tank; then the semi-finished product of the coating is subjected to impregnation rolling liquid through the impregnation tank; finally, the base fabric containing the slurry Carrying out a curing process, curing the resin by means of solvent replacement or drying or salt solidification, and forming an impregnated semi-finished product by an impregnation process;
  • the island microfibers dissolve the sea components by alkali reduction or solvent reduction or hot water reduction:
  • Alkali reduction method the impregnated semi-finished product is sent to a reducing tank, the tank is filled with a heated alkali solution, the sea component is dissolved by a multi-tank alkaline solution, and washed with hot water to realize the opening of the ultrafine fiber. , making semi-finished products;
  • Solvent reduction method the impregnated semi-finished product is sent to a reducing tank, which is filled with a heated solvent (toluene or xylene), and the sea component is dissolved by a multi-tank solvent, and washed with hot water to achieve ultrafine Opening of the fiber to produce a semi-finished product;
  • a heated solvent toluene or xylene
  • Hot water reduction method the impregnated semi-finished product is sent to a reducing tank, the tank is filled with heated water, and the multi-tank hot water is dissolved to realize the opening of the ultra-fine fiber to obtain a semi-finished product;
  • microfiber synthetic leather substrate production and finished product manufacturing open semi-finished products for drying and oiling stereotypes, and then through the process of suede, microdermabrasion and other microfiber synthetic leather substrate production, the basis
  • the material can be produced by a combination of dyeing, veneering, surface treatment, printing, etc., and finally made into a finished product of microfiber synthetic leather.
PCT/CN2015/000919 2015-09-02 2015-12-22 一种具有密度梯度结构的超细纤维合成革的生产方法 WO2017035685A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020167024140A KR20170041654A (ko) 2015-09-02 2015-12-22 밀도 구배 구조를 가진 초미세 섬유 합성 피혁의 제조 방법
JP2016544572A JP2018531327A (ja) 2015-09-02 2015-12-22 密度勾配構造を備える超微細な繊維合成皮革の製造方法

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CN201510550785.4 2015-09-02
CN201510550785.4A CN105113273B (zh) 2015-09-02 2015-09-02 一种具有密度梯度结构的超细纤维合成革的生产方法

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KR (1) KR20170041654A (ko)
CN (1) CN105113273B (ko)
TW (1) TW201710573A (ko)
WO (1) WO2017035685A1 (ko)

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CN105442332B (zh) * 2015-12-22 2017-09-05 上海华峰超纤材料股份有限公司 仿真皮超细纤维合成革基布及其制备方法
CN105507015A (zh) * 2016-01-26 2016-04-20 芜湖环瑞汽车内饰件有限公司 一种碳纳米管增强吸附型环保汽车内饰件用人造革及其制备方法
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CN108385404A (zh) * 2018-03-09 2018-08-10 昌邑誉华纺织材料有限公司 水性超纤鞋里革工艺
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CN108823997A (zh) * 2018-08-08 2018-11-16 山东同大海岛新材料股份有限公司 一种无溶剂仿头层皮超纤革的加工方法
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