CN106319993A - Preparation method of superfine fiber polyurethane synthetic leather for clothing leather - Google Patents

Preparation method of superfine fiber polyurethane synthetic leather for clothing leather Download PDF

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Publication number
CN106319993A
CN106319993A CN201610758561.7A CN201610758561A CN106319993A CN 106319993 A CN106319993 A CN 106319993A CN 201610758561 A CN201610758561 A CN 201610758561A CN 106319993 A CN106319993 A CN 106319993A
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ptt
leather
parts
temperature
drying
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CN201610758561.7A
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Inventor
孙灿
张哲�
黄东梅
冉斌
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FUJIAN TOPSUN SUPERFINE FIBRE Co Ltd
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FUJIAN TOPSUN SUPERFINE FIBRE Co Ltd
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Priority to CN201610758561.7A priority Critical patent/CN106319993A/en
Publication of CN106319993A publication Critical patent/CN106319993A/en
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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
    • D06N3/12—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
    • D06N3/145—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 two or more layers of polyurethanes
    • 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)
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    • 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
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    • 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
    • D06N3/0027—Rubber or elastomeric 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
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/0054—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by mechanical perforations
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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    • 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
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D—TEXTILES; PAPER
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    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0209—Elastomeric, elastic fibres, e.g. spandex, lycra
    • 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
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/068—Polyurethanes
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    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/02—Dispersion
    • D06N2205/023—Emulsion, aqueous dispersion, latex
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    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D06N2209/123—Breathable
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    • D06N2211/00—Specially adapted uses
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention provides a preparation method of superfine fiber polyurethane synthetic leather for clothing leather. Modified elastic polyester superfine fibers are adopted as a supplement, bass surface modification polyurethane treatment is performed, a waterborne dry-method coating is scientifically processed, the superfine fiber polyurethane synthetic leather is prepared, laser punching is performed on a surface layer, the clothing leather is superfine fiber leather with natural sheepskin touch feeling, has a good moisture-permeable and breathable effect and roughly approximates to natural leather, the defect of poor moisture permeability and breathability of conventional synthetic leather is overcome, and the superfine fiber polyurethane synthetic leather has the natural touch feeling similar to that of the natural leather and is environment-friendly and pollution-free.

Description

A kind of preparation method of clothing leather superfine fiber polyurethane leather
Technical field
The present invention relates to the preparation method of a kind of clothing leather superfine fiber polyurethane leather.
Background technology
All the time, on market, popular corium and looped fabric artificial leather make clothing leather, along with sending out rapidly of China's economy Exhibition and the raising of living standards of the people, the continuous upgrading of people's consumption level, to the demand of cortex clothing and accessories the most day by day Increasing, it is rich and varied that the exploitation of garment material also becomes, but owing to real leather technology is seriously polluted, has put into effect many in recent years The laws and regulations of environmental conservation, the development making corium is severely limited, and plus expensive, the limited source of corium, And it being difficult to meet the requirement of some specific occasion, people are sought for the succedaneum of corium.
Clothing micro fiber leather is a kind of high-grade artificial leather grown up on the basis of fully dissecting natural leather, clothes Dress micro fiber leather is to be processed through special process with aqueous polyurethane by elastic polyester bundle superfine fibre, and elastic polyester surpasses Fine fibre is three-dimensional skeleton, and aqueous polyurethane is space network in irregular minute aperture in leather body.Base fabric micro- See structure similar with collagen fiber, also there is the organizational structure similar with natural leather and physical and chemical performance simultaneously.
Existing clothing micro fiber leather all uses the transfer coated method of release paper to prepare synthetic leather, and surface layer uses solvent-borne type PU resin, the defect of this technique is in synthetic leather manufacturing process, and PU resin, by forming one layer of fine and close plastic film, makes clothing Completely lose by the moisture-penetrable ventilated property of micro fiber leather, so that the moisture-penetrable ventilated property of whole clothing micro fiber leather is almost nil.
Summary of the invention
In order to overcome the problems referred to above, the invention provides the preparation side of a kind of clothing leather superfine fiber polyurethane leather Method.
For achieving the above object, present invention provide the technical scheme that
A kind of preparation method of clothing leather superfine fiber polyurethane leather, it comprises the following steps:
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 150-155 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is carried out surface modified polyurethane process, and produce with speed 5m/min, then through high temperature Steam aqueous cleans dimethylformamide and toluene, then carrying out oiling treatment, to form aqueous PTT super fine, be wherein impregnated with formula by with The component of lower weight portion is made: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, after coating PTT surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 87-97 ° of C, wherein aqueous composite mortar resin precoat by with Lower composition by weight is made: waterborne polyurethane resin 100 parts, thickening agent 0.4-0.7 part, bridging agent 2-3 part, painting cloth number are 0.09-0.14mm；
(4) by the middle bed of material of super for the PTT of heating, drying in step (3) fine coating property of water-bearing composite mortar, being coated with cloth number is 0.15- 0.18mm, and the PTT after coating is surpassed fibre is sent to heating, drying, wherein aqueous in the hot-air oven that temperature is 103-112 ° of C The middle bed of material of composite mortar is made up of following composition by weight: waterborne polyurethane resin 100 parts, water 10-20 part, thickening agent 0.4- 0.7 part, bridging agent 2-3 part；
(5) super for the PTT being coated with the middle bed of material in step (4) fine coating is contained aqueous composite mortar initial bed, and by after coating PTT surpass fibre and be sent to heating, drying in the hot-air oven that temperature is 115-125 ° of C, wherein aqueous composite mortar initial bed by with Lower composition by weight is made: waterborne polyurethane resin 100 parts, water 10-20 part, thickening agent 0.4-0.7 part, bridging agent 2-3 part；
(6) PTT after drying in step (5) is super fine and aqueous PTT is super fine fit and is 120-130 ° of C's as delivering to temperature Baking oven is dried, finally prepares superfine fiber polyurethane leather finished product.
Having the beneficial effect that of technique scheme
1, the invention provides the preparation method of a kind of clothing leather superfine fiber polyurethane leather, be aided with improved elastic terylene Superfine fibre, is processed by bass surface modified polyurethane, then prepares, backmost through the processing of aqueous dry coating science Layer carries out laser and beats micropore, makes clothing leather have natural Corii Caprae seu Ovis sense of touch microfiber leather, moisture-penetrable ventilated effective, about with natural skin Removing from office close, solve and be conventionally synthesized the defect removing from office impermeable drenched vapour, surface has the natural sense of touch similar with natural leather, and Environment friendly and pollution-free.
2, the clothing synthetic leather processed by the preparation method of the present invention moist in mechanical strength, chemical-resistance, suction, The aspects such as homogeneity, shape-retaining ability, automatization's cutting flexibility (adaptability) of operation are better than natural leather, and its light weight wears light practicality.
3, because of clothing microfiber leather be use aqueous high-molecular organic material process, do not use environmental pollution serious Heavy metal and chemical agent, be the ideal substitute of the natural human fabricate-leather of a environment-friendly type, and clothing micro fiber leather is almost odorless , and natural leather has the peculiar taste of natural leather all the time, can be substantially improved in car is odor profiles, and natural leather is easy Breed bacteria and going mouldy, maintenance and cleansing phase are to cumbersome, and use clothing micro fiber leather, only need to carry out regular maintenance, Do not produce problems such as going mouldy.
Technical scheme will be clearly and completely described below, it is clear that described embodiment is this Bright a part of embodiment rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having Have and make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Detailed description of the invention
Embodiment 1
A kind of preparation method of clothing leather superfine fiber polyurethane leather, it comprises the following steps:
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 150 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is modified polyurethane to process, and stirs with speed 5m/min, then through high temperature Steam aqueous cleans dimethylformamide and toluene, then carrying out oiling treatment, to form aqueous PTT super fine, be wherein impregnated with formula by with The component of lower weight portion is made: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts, with speed 5m/min stirs, and then cleans dimethylformamide and toluene through high-temperature steam aqueous, then carries out oiling treatment formation water PTT is super fine for property；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, aqueous composite pulp Material resin precoat is made up of following composition by weight: waterborne polyurethane resin 100 parts, thickening agent 0.4 part, bridging agent 2 parts, coating Bar number is 0.09mm；
(4) PTT after coating is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 87 ° of C；
(5) by the middle bed of material of super for the PTT of heating, drying in step (4) fine coating property of water-bearing composite mortar, aqueous composite mortar The middle bed of material is made up of following composition by weight: waterborne polyurethane resin 100 parts, 10 parts of water, thickening agent 0.4 part, bridging agent 2 parts, is coated with Cloth number is 0.15mm, and is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 103 ° of C by the PTT after coating；
(6) super for the PTT being coated with the middle bed of material in step (5) fine coating is contained aqueous composite mortar initial bed, aqueous composite pulp Material initial bed is made up of following composition by weight: waterborne polyurethane resin 100 parts, 10 parts of water, thickening agent 0.4 part, bridging agent 2 parts, And the PTT after coating surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 115 ° of C；
(7) by super for the PTT after middle for step (6) drying fine fine laminating super with aqueous PTT and as delivering to the baking oven that temperature is 120 ° of C Middle drying, then carry out laser at surface layer and beat micropore, finally prepare superfine fiber polyurethane leather finished product.
Embodiment 2
The preparation method of clothing leather superfine fiber polyurethane leather as described in Example 1, it may also is that with lower section Method:
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 152 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is modified polyurethane to process, and stirs with speed 5m/min, then through high temperature Steam aqueous cleans dimethylformamide and toluene, then carrying out oiling treatment, to form aqueous PTT super fine, be wherein impregnated with formula by with The component of lower weight portion is made: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts, with speed 5m/min stirs, and then cleans dimethylformamide and toluene through high-temperature steam aqueous, then carries out oiling treatment formation water PTT is super fine for property；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, aqueous composite pulp Material resin precoat is made up of following composition by weight: waterborne polyurethane resin 100 parts, thickening agent 0.5 part, bridging agent 3 parts, coating Bar number is 0.11mm；
(4) PTT after coating is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 92 ° of C；
(5) by the middle bed of material of super for the PTT of heating, drying in step (4) fine coating property of water-bearing composite mortar, aqueous composite mortar The middle bed of material is made up of following composition by weight: waterborne polyurethane resin 100 parts, 15 parts of water, thickening agent 0.5 part, bridging agent 2.5 parts, Being coated with cloth number is 0.16mm, and is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 108 ° of C by the PTT after coating；
(6) super for the PTT being coated with the middle bed of material in step (5) fine coating is contained aqueous composite mortar initial bed, aqueous composite pulp Material initial bed is made up of following composition by weight: waterborne polyurethane resin 100 parts, 17 parts of water, thickening agent 0.6 part, bridging agent 2.4 Part, and the PTT after coating is surpassed fibre is sent to heating, drying in the hot-air oven that temperature is 119 ° of C；
(7) by super for the PTT after middle for step (6) drying fine fine laminating super with aqueous PTT and as delivering to the baking oven that temperature is 125 ° of C Middle drying, then carry out laser at surface layer and beat micropore, finally prepare superfine fiber polyurethane leather finished product.
Embodiment 3
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 153 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is modified polyurethane to process, and stirs with speed 5m/min, then through high temperature Steam aqueous cleans dimethylformamide and toluene, then carrying out oiling treatment, to form aqueous PTT super fine, be wherein impregnated with formula by with The component of lower weight portion is made: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts, with speed 5m/min stirs, and then cleans dimethylformamide and toluene through high-temperature steam aqueous, then carries out oiling treatment formation water PTT is super fine for property；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, aqueous composite pulp Material resin precoat is made up of following composition by weight: waterborne polyurethane resin 100 parts, thickening agent 0.7 part, bridging agent 3 parts, coating Bar number is 0.14mm；
(4) PTT after coating is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 87 ° of C；
(5) by the middle bed of material of super for the PTT of heating, drying in step (4) fine coating property of water-bearing composite mortar, aqueous composite mortar The middle bed of material is made up of following composition by weight: waterborne polyurethane resin 100 parts, 10 parts of water, thickening agent 0.4 part, bridging agent 3 parts, is coated with Cloth number is 0.15mm, and is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 110 ° of C by the PTT after coating；
(6) super for the PTT being coated with the middle bed of material in step (5) fine coating is contained aqueous composite mortar initial bed, aqueous composite pulp Material initial bed is made up of following composition by weight: waterborne polyurethane resin 100 parts, 18 parts of water, thickening agent 0.4 part, bridging agent 2 parts, And the PTT after coating surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 120 ° of C；
(7) by super for the PTT after middle for step (6) drying fine fine laminating super with aqueous PTT and as delivering to the baking oven that temperature is 126 ° of C Middle drying, then carry out laser at surface layer and beat micropore, finally prepare superfine fiber polyurethane leather finished product.
Embodiment 4
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 155 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is modified polyurethane to process, and stirs with speed 5m/min, then through high temperature Steam aqueous cleans dimethylformamide and toluene, then carrying out oiling treatment, to form aqueous PTT super fine, be wherein impregnated with formula by with The component of lower weight portion is made: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts, with speed 5m/min stirs, and then cleans dimethylformamide and toluene through high-temperature steam aqueous, then carries out oiling treatment formation water PTT is super fine for property；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, aqueous composite pulp Material resin precoat is made up of following composition by weight: waterborne polyurethane resin 100 parts, thickening agent 0.7 part, bridging agent 3 parts, coating Bar number is 0.14mm；
(4) PTT after coating is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 97 ° of C；
(5) by the middle bed of material of super for the PTT of heating, drying in step (4) fine coating property of water-bearing composite mortar, aqueous composite mortar The middle bed of material is made up of following composition by weight: waterborne polyurethane resin 100 parts, 10 parts of water, thickening agent 0.7 part, bridging agent 3 parts, is coated with Cloth number is 0.18mm, and is surpassed fibre and be sent to heating, drying in the hot-air oven that temperature is 112 ° of C by the PTT after coating；
(6) super for the PTT being coated with the middle bed of material in step (5) fine coating is contained aqueous composite mortar initial bed, aqueous composite pulp Material initial bed is made up of following composition by weight: waterborne polyurethane resin 100 parts, 18 parts of water, thickening agent 0.5 part, bridging agent 3 parts, And the PTT after coating surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 120 ° of C；
(7) by super for the PTT after middle for step (6) drying fine fine laminating super with aqueous PTT and as delivering to the baking oven that temperature is 130 ° of C Middle drying, then carry out laser at surface layer and beat micropore, finally prepare superfine fiber polyurethane leather finished product.
Improved elastic dacron ultrafine fiber island of the present invention component is PTT, and sea component makes PE.
Experiment one: the light fastness for ready-made clothes leather superfine fiber chemical leather is measured.
Test method: the test method as described in national standard QB/T2727 is tested.
Test sample: the product prepared through technical scheme described in above-mentioned 4 embodiments of the present invention, by national standard QB/T Sample mode described in 2727 is sampled, and the product that different technologies obtains samples 4 kinds respectively.
Technology requires: >=4 grades.
Result of the test is as shown in table 1:
Table 1
Note: in table 1, series 1-4 is respectively the product obtained by four embodiments of the present invention.
Conclusion (of pressure testing):
By table 1 it can be seen that synthesize through the clothing leather superfine fiber polyurethane that the technical scheme described in the present invention is prepared The light fastness of leather meets technology requirement, and, significantly improve the light fastness of product；Wherein, with described in embodiment 1 Preparation method, the light fastness of obtained clothing synthetic leather is optimal.
The physical property of product index such as following table prepared by above-described embodiment 1-4:
Table 2

Claims (6)

1. the preparation method of a clothing leather superfine fiber polyurethane leather, it is characterised in that: it comprises the following steps:
(1) select improved elastic terylene PTT superfine fibre, sting in advance and needing machine acupuncture through shredding, combing, lapping, pre-pricking machine, system Become 500g/m2Non-weaving cloth, then being carried out at a temperature of 150-155 ° of C by the non-weaving cloth manufactured plates shrinks sizing；
(2) non-weaving cloth after sizing is carried out surface modified polyurethane process, and produce with speed 5m/min, then warp High-temperature steam aqueous cleans dimethylformamide and toluene, then it is super fine to carry out oiling treatment formation aqueous PTT, is wherein impregnated with formula It is made up of the component of following weight portion: polyurethane resin 100 parts, dimethylformamide 50 parts, wet method auxiliary agent 10 parts；
(3) PTT is surpassed fibre and carry out dry method veneer, release paper coats aqueous composite mortar resin precoat, after coating PTT surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 87-97 ° of C, wherein aqueous composite mortar resin precoat by with Lower composition by weight is made: waterborne polyurethane resin 100 parts, thickening agent 0.4-0.7 part, bridging agent 2-3 part, painting cloth number are 0.09-0.14mm；
(4) by the middle bed of material of super for the PTT of heating, drying in step (3) fine coating property of water-bearing composite mortar, being coated with cloth number is 0.15- 0.18mm, and the PTT after coating is surpassed fibre is sent to heating, drying, wherein aqueous in the hot-air oven that temperature is 103-112 ° of C The middle bed of material of composite mortar is made up of following composition by weight: waterborne polyurethane resin 100 parts, water 10-20 part, thickening agent 0.4- 0.7 part, bridging agent 2-3 part；
(5) super for the PTT being coated with the middle bed of material in step (4) fine coating is contained aqueous composite mortar initial bed, and by after coating PTT surpass fibre and be sent to heating, drying in the hot-air oven that temperature is 115-125 ° of C, wherein aqueous composite mortar initial bed by with Lower composition by weight is made: waterborne polyurethane resin 100 parts, water 10-20 part, thickening agent 0.4-0.7 part, bridging agent 2-3 part；
(6) PTT after drying in step (5) is super fine and aqueous PTT is super fine fit and is 120-130 ° of C's as delivering to temperature Baking oven is dried, finally prepares superfine fiber polyurethane leather finished product.
The preparation method of a kind of clothing leather superfine fiber polyurethane leather the most as claimed in claim 1, it is characterised in that: The non-weaving cloth manufactured in described step (1) carries out plating at a temperature of 153 ° of C and shrinks sizing.
The preparation method of a kind of clothing leather superfine fiber polyurethane leather the most as claimed in claim 1, it is characterised in that: PTT after being coated with in described step (3) surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 92 ° of C；Described thickening agent 0.5 part, bridging agent 3 parts, be coated with cloth number be 0.11mm.
The preparation method of a kind of clothing leather superfine fiber polyurethane leather the most as claimed in claim 1, it is characterised in that: Being coated with cloth number described in described step (4) is 0.16mm, and is surpassed fibre and be sent to the hot blast that temperature is 108 ° of C by the PTT after coating Heating, drying in baking oven, 15 parts of described water, thickening agent 0.5 part, bridging agent 2.5 parts.
The preparation method of a kind of clothing leather superfine fiber polyurethane leather the most as claimed in claim 1, it is characterised in that: PTT after described step (5) described coating surpasses fibre and is sent to heating, drying in the hot-air oven that temperature is 119 ° of C, described water 17 Part, thickening agent 0.6 part, bridging agent 2.4 parts.
The preparation method of a kind of clothing leather superfine fiber polyurethane leather the most as claimed in claim 1, it is characterised in that: PTT after drying in described step (6) is super fine super with aqueous PTT fine to fit and as delivering to baking in the baking oven that temperature is 126 ° of C Dry, finally prepare superfine fiber polyurethane leather finished product.
CN201610758561.7A 2016-08-30 2016-08-30 Preparation method of superfine fiber polyurethane synthetic leather for clothing leather Pending CN106319993A (en)

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CN110804876A (en) * 2019-11-15 2020-02-18 山东德信皮业有限公司 Composite microfiber direct coating process
CN113373698A (en) * 2021-04-21 2021-09-10 安安(中国)有限公司 Production method of microfiber waterproof breathable synthetic leather
CN119913653A (en) * 2025-03-27 2025-05-02 广东洪兴实业股份有限公司 A light, sweat-wicking, quick-drying double-layer woven fabric with a skin-core structure and a preparation method and application thereof

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CN113373698A (en) * 2021-04-21 2021-09-10 安安(中国)有限公司 Production method of microfiber waterproof breathable synthetic leather
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