CN109137551A - A kind of high antifungal gene polyurethane leather of two-sided foaming - Google Patents
A kind of high antifungal gene polyurethane leather of two-sided foaming Download PDFInfo
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- CN109137551A CN109137551A CN201811106162.8A CN201811106162A CN109137551A CN 109137551 A CN109137551 A CN 109137551A CN 201811106162 A CN201811106162 A CN 201811106162A CN 109137551 A CN109137551 A CN 109137551A
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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
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- 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
- D06N3/005—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 blowing or swelling agent
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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
- D06N3/0056—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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- 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
- D06N3/0056—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
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- 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
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- 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
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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- 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
- D06N2209/00—Properties of the materials
- D06N2209/08—Properties of the materials having optical properties
- D06N2209/0807—Coloured
- D06N2209/0823—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
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- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/105—Resistant to abrasion, scratch
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- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1607—Degradability
- D06N2209/1621—Water-soluble, water-dispersible
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- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1642—Hardnes
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- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- D06N2213/00—Others characteristics
- D06N2213/02—All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters
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- D06N2213/00—Others characteristics
- D06N2213/03—Fibrous web coated on one side with at least two layers of the same polymer type, e.g. two coatings of polyolefin
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Wood Science & Technology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses a kind of two-sided high antifungal gene polyurethane leather of foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom cloth layer, the second polyurethane foaming layer, the second polyurethane covers；The bottom cloth layer is that base fabric is formed after the impregnation of polyurethane impregnated slurry.The high antifungal gene polyurethane leather of two-sided foaming of the invention uses two sides foaming technique, and folding line is fine and smooth, and material is stiffening；With 6 layers of structure；Product environmental protection, DMF residual is few, and wear-resisting scratch resistance anti-hydrolytic performance is superior.
Description
Technical field
The present invention relates to field of leather, and in particular to a kind of two-sided high antifungal gene polyurethane leather of foaming.
Background technique
Synthetic Leather (PolyurethaneSynthetic Leather) have intensity it is high, it is wear-resisting, cold-resistant, ventilative,
Ageing-resistant, solvent resistant, it is soft, appearance is beautiful the advantages that, processing performance might as well, be instead of ideal imitative of natural leather
Leather goods, performance are more excellent than PVC leather.Synthetic Leather is widely used in the industries such as clothes, shoemaking, luggage, furniture.
The industrialized preparing process of Synthetic Leather mainly has dry and wet two major classes.
1. dry-process polyurethane synthetic leather
Dry technology for production is generally using release paper as carrier, and by Polyurethane resin slurry blade coating, (general apply scrapes one in release paper
It is extremely secondary), it is put into baking oven heating, drying and removes the polyurethane film that the solvent in resin forms continuous uniform, then on film
Scratch adhesive, be bonded with base fabric, after baking and curing using stripping off device by release paper remove and by finished synthetic leather and
Release paper difference is coiled.Polyurethane slurry coating agent, release paper and base fabric are three component parts of dry process.Dry production
Synthetic leather film layer it is fine and close, product strength is excellent, bonding is secured, process waste water produced is less, but product sanitation performance phase
To poor, and the exhaust emission that production process generates is serious.
2. wet polyurethane synthetic leather
Wet process, which mainly passes through extruding, keeps slurry fully penetrated into non-woven cloth gap, and the non-woven cloth is then placed in coagulating bath
In, utilize " DMF-H2O " system miscible so that dimethylformamide (DMF) enters coagulating bath constantly from resin solution, simultaneously
Water then enters in base fabric and makes PU gradually be changed into gel state by dissolved state to eventually form solid film.In the exchange process
Since the adjustment effect of auxiliary agent and the contraction of polyurethane will form a large amount of micropores, the multilayered structure with continuous poriferous layer is obtained
Body, so the synthetic leather of wet production has good moisture-inhibiting, permeability, it is soft, plentiful, slim and graceful, more it is imbued with natural
The style and appearance of leather.
Current polyurethane leather or polyurethane leather product there is problems:
1. single side foams, it can not accomplish that two sides folding line is fine and smooth；
2.DMF solvent residual amount is big, and product is not environmentally, and harmful to health；
3. foaming layer abscess is uneven, not fine and close, product stiffness is inadequate；
4. thicker product, such as thickness 1.75mm or more, essentially by two kinds of material composite moldings, the technique of two kinds of Material claddings,
Processing, labour cost are contour；
5. scratch resistance wear-resisting property is bad, product anti-hydrolytic performance is low, is easy dusting scaling；
If 6. first using single side foaming dry-type processing after, product poor air permeability；Another side foaming layer coating, solvent can not volatilize
It goes, product surface can be caused rotten face by solvent corrosion, if improving product quality, complex procedures, equipment is expensive, at high cost.
Based on the above situation, more than can effectively solving the invention proposes a kind of two-sided high antifungal gene polyurethane leather of foaming
Problem.
Summary of the invention
The purpose of the present invention is to provide a kind of two-sided high antifungal gene polyurethane leathers of foaming.Two-sided foaming of the invention is high
Antifungal gene polyurethane leather uses two sides foaming technique, and folding line is fine and smooth, and material is stiffening；With 6 layers of structure；Product environmental protection, DMF are residual
It stays less, wear-resisting scratch resistance anti-hydrolytic performance is superior.
The present invention is achieved through the following technical solutions:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom
Layer of cloth, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is base fabric shape after the impregnation of polyurethane impregnated slurry
At.
The present invention has 6 layers of structure；Two sides foaming, two sides foaming layer uniform foam cell, densification, folding line is fine and smooth, and material is stiffening；
The technique of alternative two kinds of Material claddings is integrally formed, and reduces labour cost；Scratch resistance wear-resisting property is superior, product hydrolytic resistance
Can be high, up to 3-5 not dusting not scaling；Different release paper lines may be selected in first polyurethane cover and the second polyurethane cover
Road, different colors, make product table serve as a lookout lattice and effect diversification, therefore, two sides decorative pattern can arbitrarily arrange in pairs or groups according to customer demand.
As a preferred embodiment, the polyurethane impregnated slurry includes the raw material of following parts by weight: polyurethane resin 100
Part, 100-180 parts of dimethylformamide, 1-10 parts of wet process mill base；The viscosity of the polyurethane impregnated slurry is 500-
1500cps/25℃；
Dimethylformamide described here is solvent, and suitable viscosity is adjusted after dissolving resin；The mill base, can for adjusting color
Dosage is adjusted according to color effects needs.The above proportion can better ensure that the performance of product and easy to process.
As a preferred embodiment, first polyurethane foaming layer includes the raw material of following parts by weight: polyurethane resin
100 parts, 80-120 parts of dimethylformamide, 40-60 parts of calcium carbonate, 0.1-1 parts of defoaming agent, 0.5-2 parts of water washing assistant and water, wet process color
1-10 parts of slurry；After mixing, viscosity is 8000-20000cps/25 DEG C to the raw material of first polyurethane foaming layer；It is described to disappear
Infusion is any one or more in silicone emulsion, the fatty acid ester compounded object of higher alcohols and dimethyl silicone polymer；Washing helps
Agent is organic silicon water washing assistant and water；
Dimethylformamide described here is solvent, and suitable viscosity is adjusted after dissolving resin；Calcium carbonate is big for adjusting abscess
Small and cell density；The defoaming agent and water washing assistant and water can be defoaming agent and water washing assistant and water commonly used in the art, for mentioning
Height washing speed, keeps cleaning cleaner, and DMF residual is less；The mill base can be adjusted for adjusting color according to color effects needs
Whole dosage.The above proportion can better ensure that the performance of product and easy to process.
As a preferred embodiment, first polyurethane cover includes the raw material of following parts by weight: polyurethane resin 100
Part, 30-70 parts of dimethylformamide, 20-40 parts of ethyl acetate, 15-35 parts of dry method mill base；The original of first polyurethane cover
After mixing, viscosity is 3000-6000cps/25 DEG C to material；
Dimethylformamide and ethyl acetate described here are solvents, and suitable viscosity is adjusted after dissolving resin；The mill base is used
In adjusting color, dosage can be adjusted according to color effects needs.The above proportion can better ensure that the performance of product and be convenient for
Processing.
As a preferred embodiment, the adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, diformazan
20-40 parts of base formamide, 10-40 parts of ethyl acetate, 15-35 parts of dry method mill base；The raw material of the adhesive layer after mixing, glues
Degree is 10000-15000cps/25 DEG C；
Dimethylformamide and ethyl acetate described here are solvents, and suitable viscosity is adjusted after dissolving resin；The mill base is used
In adjusting color, dosage can be adjusted according to color effects needs.The above proportion can better ensure that the performance of product and be convenient for
Processing.
As a preferred embodiment, second polyurethane cover includes the raw material of following parts by weight: polyurethane resin 100
Part, 30-70 parts of dimethylformamide, 20-40 parts of ethyl acetate, 15-35 parts of mill base；The raw material of second polyurethane cover is mixed
After closing uniformly, viscosity is 3000-6000 cps/25 DEG C；
Dimethylformamide and ethyl acetate described here are solvents, and suitable viscosity is adjusted after dissolving resin；The mill base is used
In adjusting color, dosage can be adjusted according to color effects needs.The above proportion can better ensure that the performance of product and be convenient for
Processing.
As a preferred embodiment, second polyurethane foaming layer includes the raw material of following parts by weight: end contains -0H
100 parts of base polyurethane prepolymer for use as, end contain 0.1-1 parts of 60-100 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is
Bismuth carboxylate micromolecular compound or bismuth carboxylate micromolecular mixture.
By selecting base polyurethane prepolymer for use as and end base polyurethane prepolymer for use as containing-NCO of the end containing -0H online as AB material
Reaction, product environmental protection, health, no DMF solvent residual.The above proportion can better ensure that the performance of product and easy to process.
As a preferred embodiment, first polyurethane cover with a thickness of 0.05-0.15mm.
The first polyurethane cover texture described in this way and feeling is better.
As a preferred embodiment, the sum of thickness of the bottom cloth layer and the first polyurethane foaming layer is 1.25-2.45mm.
Make the high antifungal gene polyurethane leather of two-sided foaming of the invention in this way, there is better flexibility and gas permeability, it is whole
Constitution sense and feeling is better.
As a preferred embodiment, the base fabric in the bottom cloth layer is 1.0-1.2mm tWarp Knitted Fabrics, grammes per square metre 300-
400g/m。
The performance of product and easy to process can be better ensured that in this way.
As a preferred embodiment, second polyurethane foaming layer with a thickness of 0.15-0.35mm.
The second polyurethane foaming layer described in this way and combine the first polyurethane cover after, material stiffness is more preferable, texture and
Feeling is better.
As a preferred embodiment, second polyurethane cover with a thickness of 0.05-0.15mm.
The first polyurethane cover texture described in this way and feeling is better.
The present invention also provides a kind of preparation methods of two-sided high antifungal gene polyurethane leather of foaming, include the following steps:
(1) base fabric being placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.3-0.6mm,
Obtain bottom cloth layer；
(2) the first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethyl formyl
It solidifies, then through multiple washing trough washeries, then is dried, oven temperature used in the drying in amine-aqueous systems coagulating basin
Control is 100-180 DEG C, obtains the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer；
(3) release paper unreels, and coats the first polyurethane cover slurry on release paper surface, coating thickness 0.10-0.25mm dries
Dry and cold oven temperature used is 60 DEG C~150 DEG C, obtains the first polyurethane cover；
Baking oven described here is at least 2 sections of baking ovens, and such as Drying and cooling, oven temperature used is 60 DEG C~150 DEG C, baking used
Case is 3 sections of baking ovens, and temperature is followed successively by 60 DEG C, 90 DEG C, 120 DEG C；Suitable coating and the control of stoving process conditional parameter, more preferably
Ground guarantees the synthesis service performance of the first polyurethane cover and the high antifungal gene polyurethane leather of two-sided foaming of the invention.
(4) binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, baking oven temperature used
Degree is 60 DEG C~120 DEG C, is pasted with the first polyurethane foam layer surface of the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer
It closes, Drying and cooling, oven temperature used is 60 DEG C~150 DEG C, removes release paper, and release paper lines is transferred to the first polyurethane
The surface of surface layer obtains fitting semi-finished product；
Baking oven described here is at least 2 sections of baking ovens, and if preliminary drying is half-dried, oven temperature used is 80 DEG C~120 DEG C, baking used
Case is 3 sections of baking ovens, and temperature is followed successively by 80 DEG C, 90 DEG C, 100 DEG C；Drying and cooling, oven temperature used are 60 DEG C~150 DEG C,
Baking oven used is 4 sections of baking ovens, and temperature is followed successively by 60 DEG C, 75 DEG C, 90 DEG C, 105 DEG C；Suitable coating and stoving process condition ginseng
Number control, better ensures that the synthesis usability of fitting semi-finished product and the high antifungal gene polyurethane leather of two-sided foaming of the invention
Energy.
(5) release paper unreels, and coats the second polyurethane cover slurry, coating thickness 0.10- on release paper surface
0.25mm, Drying and cooling, oven temperature used are 60 DEG C~150 DEG C, obtain the second polyurethane cover；
Baking oven described here is at least 2 sections of baking ovens, and such as Drying and cooling, oven temperature used is 60 DEG C~150 DEG C, baking used
Case is 4 sections of baking ovens, and temperature is followed successively by 60 DEG C, 85 DEG C, 110 DEG C, 135 DEG C；Suitable coating and the control of stoving process conditional parameter
System, better ensures that the synthesis usability of the second polyurethane cover and the high antifungal gene polyurethane leather of two-sided foaming of the invention
Energy.
(6) the second polyurethane foam slurry is coated on resulting second polyurethane cover of step (5), coating thickness is
0.2-0.6mm, preliminary drying half are crosslinked half and foam, and oven temperature used is 60 DEG C -150 DEG C, and the residence time is 100- in baking oven
120s is bonded with another surface of the bottom layer for being bonded semi-finished product, dries crosslinking curing, and oven temperature used is 120-150 DEG C,
Maturation, maturation room temperature are 50-100 DEG C, and the maturation time is 6-72h, removes release paper, and release paper lines is transferred to the second poly- ammonia
The surface of ester surface layer obtains the high antifungal gene polyurethane leather of two-sided foaming；
Baking oven described here is at least 2 sections of baking ovens, is foamed as preliminary drying half is crosslinked half, oven temperature used is 60 DEG C -150
DEG C, baking oven used is 4 sections of baking ovens, and temperature is followed successively by 60 DEG C, 80 DEG C, 100 DEG C, 120 DEG C；Suitable coating and stoving process item
Part state modulator better ensures that the second polyurethane foaming layer uniform foam cell, densification, and abscess is fine and close, and product folding line is just fine and smooth；It is logical
It crosses and later period drying temperature is increased to 120-150 DEG C, better ensure that DMF content is less than 1000ppm in product.
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried in temperature
Successively dried in raised environment；The first polyurethane foam slurry is that the raw material mixing of first polyurethane foaming layer is equal
Gained after even；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；It is described
Binding paste be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane face
Layer raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer mixes
Gained after uniformly.
As a preferred embodiment, temperature control is at 25-32 DEG C in coagulating basin in step (2), dimethylformamide concentration
Control is in 18-22%；Temperature control is at 40-80 DEG C in the rinsing bowl, dimethylformamide concentration control in the last one rinsing bowl
System is below 1%.
Suitable solidification and the control of washing process conditional parameter, better ensure that the first polyurethane foaming layer uniform foam cell,
Densification, abscess is fine and close, and product folding line is just fine and smooth；By in the last one rinsing bowl dimethylformamide concentration control 1% with
Under, better ensure that DMF content is less than 1000ppm in product.
As a preferred embodiment, the first polyurethane foam slurry is scratched described in step (2), is scratched with a thickness of 1.8-
2.2mm；The wet half-finished product of+the first polyurethane foaming layer of bottom cloth layer with a thickness of 1.25-2.45mm, breadth 144cm with
On.
The high antifungal gene polyurethane leather of two-sided foaming of the invention compared with prior art, has the following advantages that and beneficial to effect
Fruit:
1, two sides foaming structure, two sides folding line are fine and smooth；
2, DMF solvent residual content is less than 1000ppm, and product environmental protection meets REACH standard, and environmental-friendly；
3, two sides foaming layer uniform foam cell, densification, material are stiffening；
4, thickness 1.75mm or more, the technique of alternative two kinds of Material claddings are integrally formed, and reduce labour cost；
5, the second polyurethane foaming layer is to expect that online reaction is realized by new technology AB, product environmental protection, no DMF solvent residual；
6, scratch resistance wear-resisting property is superior, and product anti-hydrolytic performance is high, up to 3-5 not dusting not scaling；
7, different release paper lines may be selected in the first polyurethane cover and the second polyurethane cover, and different colors makes product
Apparent style and effect diversification, therefore, two sides decorative pattern can arbitrarily arrange in pairs or groups according to customer demand；
8, the first polyurethane cover, adhesive layer and the first polyurethane foaming layer process are first completed, if positive foaming layer is also general
Logical dry-type processing, the remaining DMF solvent in the inside just do not volatilize not go out, and cause product surface quality problem, so the second poly- ammonia
The solvent-free online reaction of ester foaming layer, solves this problem in that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for inventing the two-sided high antifungal gene polyurethane leather of foaming.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Test method described in following embodiments or test method are unless otherwise specified conventional method；The examination
Agent and material are obtained from routine business approach, or prepare in conventional manner unless otherwise specified.
Embodiment 1:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover 1, adhesive layer 2, the first polyurethane foaming layer 3,
Bottom cloth layer 4, the second polyurethane foaming layer 5, the second polyurethane cover 6；The bottom cloth layer is that base fabric contains through polyurethane impregnated slurry
It is formed after leaching.
Embodiment 2:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom
Layer of cloth, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is base fabric shape after the impregnation of polyurethane impregnated slurry
At；
The polyurethane impregnated slurry includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 100-
180 parts, 1-10 parts of wet process mill base；The viscosity of the polyurethane impregnated slurry is 500-1500cps/25 DEG C；
First polyurethane foaming layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 80-
120 parts, 40-60 parts of calcium carbonate, 0.1-1 parts of defoaming agent, 0.5-2 parts of water washing assistant and water, 1-10 parts of wet process mill base；The first poly- ammonia
After mixing, viscosity is 8000-20000cps/25 DEG C to the raw material of ester foaming layer；The defoaming agent is silicone emulsion, higher alcohols
Any one or more in fatty acid ester compounded object and dimethyl silicone polymer；Water washing assistant and water is organic silicon water washing assistant and water；
First polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 30-70
Part, 20-40 parts of ethyl acetate, 15-35 parts of dry method mill base；After mixing, viscosity is the raw material of first polyurethane cover
3000-6000cps/25℃；
The adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, 20-40 parts of dimethylformamide, acetic acid second
10-40 parts of ester, 15-35 parts of dry method mill base；The raw material of the adhesive layer after mixing, viscosity 10000-15000cps/25
℃；
Second polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 30-70
Part, 20-40 parts of ethyl acetate, 15-35 parts of mill base；The raw material of second polyurethane cover after mixing, viscosity 3000-
6000 cps/25℃；
Second polyurethane foaming layer includes the raw material of following parts by weight: end contains 100 parts of the base polyurethane prepolymer for use as of -0H, end
End contains 0.1-1 parts of 60-100 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is bismuth carboxylate micromolecular compound
Or bismuth carboxylate micromolecular mixture；
First polyurethane cover with a thickness of 0.05-0.15mm；
The sum of thickness of the bottom cloth layer and the first polyurethane foaming layer is 1.25-2.45mm；
Base fabric in the bottom cloth layer is 1.0-1.2mm tWarp Knitted Fabrics, grammes per square metre 300-400g/m；
Second polyurethane foaming layer with a thickness of 0.15-0.35mm；
Second polyurethane cover with a thickness of 0.05-0.15mm；
A kind of preparation method of the high antifungal gene polyurethane leather of two-sided foaming includes the following steps:
(1) base fabric being placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.3-0.6mm,
Obtain bottom cloth layer；
(2) the first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethyl formyl
It solidifies, then through multiple washing trough washeries, then is dried, oven temperature used in the drying in amine-aqueous systems coagulating basin
Control is 100-180 DEG C, obtains the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer；
(3) release paper unreels, and coats the first polyurethane cover slurry on release paper surface, coating thickness 0.10-0.25mm dries
Dry and cold oven temperature used is 60 DEG C~150 DEG C, obtains the first polyurethane cover；
(4) binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, and oven temperature used is
It 60 DEG C~120 DEG C, is bonded with the first polyurethane foam layer surface of the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer,
Drying and cooling, oven temperature used are 60 DEG C~150 DEG C, remove release paper, release paper lines is transferred to the first polyurethane face
The surface of layer obtains fitting semi-finished product；
(5) release paper unreels, and coats the second polyurethane cover slurry on release paper surface, coating thickness 0.10-0.25mm dries
Dry and cold oven temperature used is 60 DEG C~150 DEG C, obtains the second polyurethane cover；
(6) the second polyurethane foam slurry, coating thickness 0.2- are coated on resulting second polyurethane cover of step (5)
0.6mm, preliminary drying half are crosslinked half and foam, and oven temperature used is 60 DEG C -150 DEG C, and the residence time is 100-120s in baking oven,
It being bonded with another surface of the bottom layer for being bonded semi-finished product, dries crosslinking curing, oven temperature used is 120-150 DEG C, maturation,
Maturation room temperature is 50-100 DEG C, and the maturation time is 6-72h, removes release paper, and release paper lines is transferred to the second polyurethane face
The surface of layer, obtains the high antifungal gene polyurethane leather of two-sided foaming；
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried temperature successively
It is dried in raised environment；The first polyurethane foam slurry be first polyurethane foaming layer raw material after mixing
Gained；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；The bonding
Slurry be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane cover
Raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer is uniformly mixed
Gained afterwards；
At 25-32 DEG C, dimethylformamide concentration is controlled in 18-22% for temperature control in coagulating basin in step (2)；The washing
Temperature control is at 40-80 DEG C in slot, and the control of dimethylformamide concentration is below 1% in the last one rinsing bowl；
The first polyurethane foam slurry is scratched described in step (2), is scratched with a thickness of 1.8-2.2mm；The bottom cloth layer+the first is poly-
The wet half-finished product of urethane foaming layer with a thickness of 1.25-2.45mm, breadth 144cm or more.
Embodiment 3:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom
Layer of cloth, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is base fabric shape after the impregnation of polyurethane impregnated slurry
At.
The polyurethane impregnated slurry includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide
1200 parts, 1 part of wet process mill base；The viscosity of the polyurethane impregnated slurry is 1000cps/25 DEG C；
First polyurethane foaming layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 80
Part, 40 parts of calcium carbonate, 0.1 part of defoaming agent, 0.5 part of water washing assistant and water, 1 part of wet process mill base；The original of first polyurethane foaming layer
After mixing, viscosity is 15000cps/25 DEG C to material；The defoaming agent is silicone emulsion；Water washing assistant and water is organic silicon washing
Auxiliary agent；
First polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 45 parts of dimethylformamide,
20 parts of ethyl acetate, 25 parts of dry method mill base；The raw material of first polyurethane cover after mixing, viscosity 4000cps/25
℃；
The adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, 20 parts of dimethylformamide, ethyl acetate
15 parts, 15 parts of dry method mill base；After mixing, viscosity is 12000cps/25 DEG C to the raw material of the adhesive layer；
Second polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 45 parts of dimethylformamide,
20 parts of ethyl acetate, 30 parts of mill base；After mixing, viscosity is 4000 cps/25 DEG C to the raw material of second polyurethane cover；
Second polyurethane foaming layer includes the raw material of following parts by weight: end contains 100 parts of the base polyurethane prepolymer for use as of -0H, end
End contains 0.5 part of 68 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is bismuth carboxylate micromolecular compound；
First polyurethane cover with a thickness of 0.05mm；
The sum of thickness of the bottom cloth layer and the first polyurethane foaming layer is 1.35mm；
Base fabric in the bottom cloth layer is 1.0 tWarp Knitted Fabrics, grammes per square metre 300g/m；
Second polyurethane foaming layer with a thickness of 0.15mm；
Second polyurethane cover with a thickness of 0.05mm；
A kind of preparation method of the high antifungal gene polyurethane leather of two-sided foaming includes the following steps:
(1) base fabric is placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.4mm, is obtained
Bottom cloth layer；
(2) the first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethyl formyl
It solidifies, then through multiple washing trough washeries, then is dried, oven temperature used in the drying in amine-aqueous systems coagulating basin
Control is 100-180 DEG C, obtains the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer；
(3) release paper unreels, and coats the first polyurethane cover slurry on release paper surface, coating thickness 0.15mm is dried cold
But, oven temperature used is 60 DEG C~150 DEG C, obtains the first polyurethane cover；
(4) binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, and oven temperature used is
It 60 DEG C~120 DEG C, is bonded with the first polyurethane foam layer surface of the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer,
Drying and cooling, oven temperature used are 60 DEG C~150 DEG C, remove release paper, release paper lines is transferred to the first polyurethane face
The surface of layer obtains fitting semi-finished product；
(5) release paper unreels, and coats the second polyurethane cover slurry on release paper surface, coating thickness 0.15mm is dried cold
But, oven temperature used is 60 DEG C~150 DEG C, obtains the second polyurethane cover；
(6) the second polyurethane foam slurry is coated on resulting second polyurethane cover of step (5), coating thickness 0.5mm,
Preliminary drying half is crosslinked half and foams, and oven temperature used is 60 DEG C -150 DEG C, and the residence time is 120s in baking oven, be bonded partly at
Another surface fitting of the bottom layer of product, dries crosslinking curing, and oven temperature used is 120-150 DEG C, maturation, maturation room temperature
It is 70 DEG C, the maturation time is 36h, removes release paper, and release paper lines is transferred to the surface of the second polyurethane cover, obtains two-sided
Foam high antifungal gene polyurethane leather；
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried temperature successively
It is dried in raised environment；The first polyurethane foam slurry be first polyurethane foaming layer raw material after mixing
Gained；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；The bonding
Slurry be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane cover
Raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer is uniformly mixed
Gained afterwards；
At 25 DEG C, dimethylformamide concentration is controlled 18% for temperature control in coagulating basin in step (2)；The rinsing bowl medium temperature
Degree control dimethylformamide concentration in 60 DEG C, the last one rinsing bowl controls below 0.5%；
The first polyurethane foam slurry is scratched described in step (2), is scratched with a thickness of 1.9mm；+ the first polyurethane of bottom cloth layer
The wet half-finished product of foaming layer with a thickness of 1.45mm, breadth 146cm.
Embodiment 4:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom
Layer of cloth, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is base fabric shape after the impregnation of polyurethane impregnated slurry
At；
The polyurethane impregnated slurry includes the raw material of following parts by weight: 100 parts of polyurethane resin, 160 parts of dimethylformamide,
5 parts of wet process mill base；The viscosity of the polyurethane impregnated slurry is 800cps/25 DEG C；
First polyurethane foaming layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 80
Part, 40 parts of calcium carbonate, 0.1 part of defoaming agent, 0.5 part of water washing assistant and water, 1 part of wet process mill base；The original of first polyurethane foaming layer
After mixing, viscosity is 8000cps/25 DEG C to material；The defoaming agent is silicone emulsion, the fatty acid ester compounded object of higher alcohols；Water
Washing auxiliary agent is organic silicon water washing assistant and water；
First polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 65 parts of dimethylformamide,
30 parts of ethyl acetate, 30 parts of dry method mill base；The raw material of first polyurethane cover after mixing, viscosity 3000cps/25
℃；
The adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, 30 parts of dimethylformamide, ethyl acetate
25 parts, 30 parts of dry method mill base；After mixing, viscosity is 10000cps/25 DEG C to the raw material of the adhesive layer；
Second polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 65 parts of dimethylformamide,
30 parts of ethyl acetate, 30 parts of mill base；After mixing, viscosity is 3000 cps/25 DEG C to the raw material of second polyurethane cover；
Second polyurethane foaming layer includes the raw material of following parts by weight: end contains 100 parts of the base polyurethane prepolymer for use as of -0H, end
End contains 0.3 part of 78 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is bismuth carboxylate micromolecular compound or carboxylic acid
Bismuth micromolecular mixture；
First polyurethane cover with a thickness of 0.15mm；
The sum of thickness of the bottom cloth layer and the first polyurethane foaming layer is 2.45mm；
Base fabric in the bottom cloth layer is 1.2mm tWarp Knitted Fabrics, grammes per square metre 400g/m；
Second polyurethane foaming layer with a thickness of 0.35mm；
Second polyurethane cover with a thickness of 0.15mm；
A kind of preparation method of the high antifungal gene polyurethane leather of two-sided foaming, includes the following steps:
(1) base fabric being placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.4-0.5mm,
Obtain bottom cloth layer；
(2) the first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethyl formyl
It solidifies, then through multiple washing trough washeries, then is dried, oven temperature used in the drying in amine-aqueous systems coagulating basin
Control is 120-180 DEG C, obtains the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer；
(3) release paper unreels, and coats the first polyurethane cover slurry on release paper surface, coating thickness 0.15-0.2mm dries
Dry and cold oven temperature used is 60 DEG C~150 DEG C, obtains the first polyurethane cover；
(4) binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, and oven temperature used is
It 60 DEG C~120 DEG C, is bonded with the first polyurethane foam layer surface of the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer,
Drying and cooling, oven temperature used are 60 DEG C~150 DEG C, remove release paper, release paper lines is transferred to the first polyurethane face
The surface of layer obtains fitting semi-finished product；
(5) release paper unreels, and coats the second polyurethane cover slurry on release paper surface, coating thickness 0.2mm is dried cold
But, oven temperature used is 60 DEG C~150 DEG C, obtains the second polyurethane cover；
(6) the second polyurethane foam slurry is coated on resulting second polyurethane cover of step (5), coating thickness 0.4mm,
Preliminary drying half is crosslinked half and foams, and oven temperature used is 60 DEG C -150 DEG C, and the residence time is 100-120s in baking oven, and is bonded
Another surface fitting of the bottom layer of semi-finished product, dries crosslinking curing, and oven temperature used is 120-150 DEG C, maturation, ripening chamber
Temperature is 50 DEG C, and the maturation time is 6h, removes release paper, and release paper lines is transferred to the surface of the second polyurethane cover, obtains
The two-sided high antifungal gene polyurethane leather of foaming；
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried temperature successively
It is dried in raised environment；The first polyurethane foam slurry be first polyurethane foaming layer raw material after mixing
Gained；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；The bonding
Slurry be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane cover
Raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer is uniformly mixed
Gained afterwards；
At 32 DEG C, dimethylformamide concentration is controlled 22% for temperature control in coagulating basin in step (2)；The rinsing bowl medium temperature
Degree control dimethylformamide concentration in 80 DEG C, the last one rinsing bowl controls below 1%；
The first polyurethane foam slurry is scratched described in step (2), is scratched with a thickness of 2.1mm；+ the first polyurethane of bottom cloth layer
The wet half-finished product of foaming layer with a thickness of 2mm, breadth 148cm.
Embodiment 5:
A kind of high antifungal gene polyurethane leather of two-sided foaming, the first polyurethane cover, adhesive layer, the first polyurethane foaming layer, bottom
Layer of cloth, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is base fabric shape after the impregnation of polyurethane impregnated slurry
At；
The polyurethane impregnated slurry includes the raw material of following parts by weight: 100 parts of polyurethane resin, 135 parts of dimethylformamide,
2.5 parts of wet process mill base；The viscosity of the polyurethane impregnated slurry is 765cps/25 DEG C；
First polyurethane foaming layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 89
Part, 52.5 parts of calcium carbonate, 0.15 part of defoaming agent, 0.75 part of water washing assistant and water, 3.5 parts of wet process mill base；First polyurethane foam
After mixing, viscosity is 10230cps/25 DEG C to the raw material of layer；The defoaming agent is dimethyl silicone polymer；Water washing assistant and water is
Organic silicon water washing assistant and water；
First polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 49 parts of dimethylformamide,
25 parts of ethyl acetate, 22 parts of dry method mill base；The raw material of first polyurethane cover after mixing, viscosity 4652cps/25
℃；
The adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, 25 parts of dimethylformamide, ethyl acetate
17.5 parts, 16.8 parts of dry method mill base；After mixing, viscosity is 11550cps/25 DEG C to the raw material of the adhesive layer；
Second polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, 56 parts of dimethylformamide,
26.5 parts of ethyl acetate, 22.8 parts of mill base；After mixing, viscosity is 3750 cps/ to the raw material of second polyurethane cover
25℃；
Second polyurethane foaming layer includes the raw material of following parts by weight: end contains 100 parts of the base polyurethane prepolymer for use as of -0H, end
End contains 0.23 part of 74 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is bismuth carboxylate micromolecular mixture；
First polyurethane cover with a thickness of 0.08mm；
The sum of thickness of the bottom cloth layer and the first polyurethane foaming layer is 1.66mm；
Base fabric in the bottom cloth layer is 1.15mm tWarp Knitted Fabrics, grammes per square metre 325g/m；
Second polyurethane foaming layer with a thickness of 0.26mm；
Second polyurethane cover with a thickness of 0.11mm；
A kind of preparation method of the high antifungal gene polyurethane leather of two-sided foaming, includes the following steps:
(1) base fabric is placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.47mm, is obtained
To bottom cloth layer；
(2) the first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethyl formyl
It solidifies, then through multiple washing trough washeries, then is dried, oven temperature used in the drying in amine-aqueous systems coagulating basin
Control is 130-180 DEG C, and baking oven used is 3 sections of baking ovens, and temperature is followed successively by 135 DEG C, 145 DEG C, 155 DEG C；Obtain bottom cloth layer+the
The wet half-finished product of one polyurethane foaming layer；
(3) release paper unreels, and coats the first polyurethane cover slurry on release paper surface, coating thickness 0.18mm is dried cold
But, oven temperature used be 60 DEG C~150 DEG C, baking oven used be 4 sections of baking ovens, temperature be followed successively by 65 DEG C, 85 DEG C, 105 DEG C,
125℃；Obtain the first polyurethane cover；
(4) binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, and oven temperature used is
80 DEG C~120 DEG C, baking oven used is 3 sections of baking ovens, and temperature is followed successively by 85 DEG C, 95 DEG C, 105 DEG C；With the+the first polyurethane of bottom cloth layer
First polyurethane foam layer surface of the wet half-finished product of foaming layer is bonded, Drying and cooling, and oven temperature used is 60 DEG C~
150 DEG C, baking oven used is 4 sections of baking ovens, and temperature is followed successively by 65 DEG C, 85 DEG C, 105 DEG C, 125 DEG C；Remove release paper, release paper line
Road is transferred to the surface of the first polyurethane cover, obtains fitting semi-finished product；
(5) release paper unreels, and coats the second polyurethane cover slurry on release paper surface, coating thickness 0.17mm is dried cold
But, oven temperature used be 60 DEG C~150 DEG C, baking oven used be 4 sections of baking ovens, temperature be followed successively by 65 DEG C, 85 DEG C, 105 DEG C,
125℃；Obtain the second polyurethane cover；
(6) the second polyurethane foam slurry is coated on resulting second polyurethane cover of step (5), coating thickness is
0.35mm, preliminary drying half are crosslinked half and foam, and oven temperature used is 60 DEG C -150 DEG C, and baking oven used is 4 sections of baking ovens, temperature according to
Secondary is 65 DEG C, 85 DEG C, 105 DEG C, 125 DEG C；The residence time is 110s in baking oven, with another surface of the bottom layer for being bonded semi-finished product
Crosslinking curing is dried in fitting, and oven temperature used is 130-150 DEG C, and baking oven used is 2 sections of baking ovens, and temperature is followed successively by 135
℃,145℃；Maturation, maturation room temperature are 75 DEG C, and the maturation time is for 24 hours, to remove release paper, and release paper lines is transferred to second
The surface of polyurethane cover obtains the high antifungal gene polyurethane leather of two-sided foaming；
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried temperature successively
It is dried in raised environment；The first polyurethane foam slurry be first polyurethane foaming layer raw material after mixing
Gained；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；The bonding
Slurry be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane cover
Raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer is uniformly mixed
Gained afterwards；
At 27 DEG C, dimethylformamide concentration is controlled 20.5% for temperature control in coagulating basin in step (2)；In the rinsing bowl
Temperature control dimethylformamide concentration in 55 DEG C, the last one rinsing bowl controls below 0.5%；
The first polyurethane foam slurry is scratched described in step (2), is scratched with a thickness of 2.0mm；+ the first polyurethane of bottom cloth layer
The wet half-finished product of foaming layer with a thickness of 1.75mm, breadth 150cm.
Embodiment 6:
The high antifungal gene polyurethane leather product of two-sided foaming of the invention obtained by embodiment 3-5 is tested:
Antifungal gene performance test: product doubling sees wrinkle recovery situation, two-sided foaming highly resistance of the invention after ballast 1kg, 24H
Wrinkle polyurethane leather scrimp does not have substantially.
The high antifungal gene polyurethane leather DMF content of two-sided foaming of the invention is less than 1000ppm.
Wear-resisting scratch resistance: front epidermis adds foaming layer, tests 1000 turns of Taber wear-resisting (H-22,1kg), of the invention
The two-sided high antifungal gene polyurethane leather surface of foaming is not broken；Surface is scraped with key chain, the high antifungal gene of two-sided foaming of the invention is poly-
Urethane leather surface is not broken.
Hydrolysis: jungle tests (70 DEG C of * 95RH) 21 days；The high antifungal gene polyurethane leather surface of two-sided foaming of the invention
It does not crack, dusting, delamination, mouldy, hair mist.
The high antifungal gene polyurethane leather of two-sided foaming of the invention:
1, two sides foaming structure, two sides folding line are fine and smooth；
2, DMF solvent residual content is less than 1000ppm, and product environmental protection meets REACH standard, and environmental-friendly；
3, two sides foaming layer uniform foam cell, densification, material are stiffening；
4, thickness 1.75mm or more, the technique of alternative two kinds of Material claddings are integrally formed, and reduce labour cost；
5, the second polyurethane foaming layer is to expect that online reaction is realized by new technology AB, product environmental protection, no DMF solvent residual；
6, scratch resistance wear-resisting property is superior, and product anti-hydrolytic performance is high, up to 3-5 not dusting not scaling；
7, different release paper lines may be selected in the first polyurethane cover and the second polyurethane cover, and different colors makes product
Apparent style and effect diversification, therefore, two sides decorative pattern can arbitrarily arrange in pairs or groups according to customer demand；
8, the first polyurethane cover, adhesive layer and the first polyurethane foaming layer process are first completed, if positive foaming layer is also general
Logical dry-type processing, the remaining DMF solvent in the inside just do not volatilize not go out, and cause product surface quality problem, so the second poly- ammonia
The solvent-free online reaction of ester foaming layer solves this problem in that.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (10)
1. a kind of high antifungal gene polyurethane leather of two-sided foaming, which is characterized in that the first polyurethane cover, adhesive layer, first gather
Urethane foaming layer, bottom cloth layer, the second polyurethane foaming layer, the second polyurethane cover；The bottom cloth layer is that base fabric is soaked through polyurethane
It is formed after the impregnation of impregnating paste material.
2. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that the polyurethane impregnated
Slurry includes the raw material of following parts by weight: 100 parts of polyurethane resin, 100-180 parts of dimethylformamide, wet process mill base 1-10
Part；The viscosity of the polyurethane impregnated slurry is 500-1500cps/25 DEG C；
First polyurethane foaming layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 80-
120 parts, 40-60 parts of calcium carbonate, 0.1-1 parts of defoaming agent, 0.5-2 parts of water washing assistant and water, 1-10 parts of wet process mill base；The first poly- ammonia
After mixing, viscosity is 8000-20000cps/25 DEG C to the raw material of ester foaming layer；The defoaming agent is silicone emulsion, higher alcohols
Any one or more in fatty acid ester compounded object and dimethyl silicone polymer；Water washing assistant and water is organic silicon water washing assistant and water；
First polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 30-70
Part, 20-40 parts of ethyl acetate, 15-35 parts of dry method mill base；After mixing, viscosity is the raw material of first polyurethane cover
3000-6000cps/25℃；
The adhesive layer includes the raw material of following parts by weight: 100 parts of polyurethane resin, 20-40 parts of dimethylformamide, acetic acid second
10-40 parts of ester, 15-35 parts of dry method mill base；The raw material of the adhesive layer after mixing, viscosity 10000-15000cps/25
℃；
Second polyurethane cover includes the raw material of following parts by weight: 100 parts of polyurethane resin, dimethylformamide 30-70
Part, 20-40 parts of ethyl acetate, 15-35 parts of mill base；The raw material of second polyurethane cover after mixing, viscosity 3000-
6000 cps/25℃；
Second polyurethane foaming layer includes the raw material of following parts by weight: end contains 100 parts of the base polyurethane prepolymer for use as of -0H, end
End contains 0.1-1 parts of 60-100 parts of base polyurethane prepolymer for use as, the catalyst of-NCO；The catalyst is bismuth carboxylate micromolecular compound
Or bismuth carboxylate micromolecular mixture.
3. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that first polyurethane
Surface layer with a thickness of 0.05-0.15mm.
4. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that the bottom cloth layer and
The sum of thickness of one polyurethane foaming layer is 1.25-2.45mm.
5. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that in the bottom cloth layer
Base fabric is 1.0-1.2mm tWarp Knitted Fabrics, grammes per square metre 300-400g/m.
6. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that second polyurethane
Foaming layer with a thickness of 0.15-0.35mm.
7. the high antifungal gene polyurethane leather of two-sided foaming according to claim 1, which is characterized in that second polyurethane
Surface layer with a thickness of 0.05-0.15mm.
8. existing according to claim 1 to a kind of two-sided high antifungal gene polyurethane leather of foaming, feature described in 7 any one
In the preparation method of the two-sided high antifungal gene polyurethane leather of foaming includes the following steps:
Base fabric is placed in polyurethane impregnation slurry, then is squeezed by squeezing rod, the extruding rod spacing is 0.3-0.6mm, is obtained
To bottom cloth layer；
The first polyurethane foam slurry is scratched on step (1) resulting bottom cloth layer, is subsequently placed in and fills dimethylformamide-water
It solidifies, then through multiple washing trough washeries, then is dried in the coagulating basin of system, the control of oven temperature used in the drying is
100-180 DEG C, obtain the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer；
Release paper unreels, and coats the first polyurethane cover slurry, coating thickness 0.10-0.25mm, drying on release paper surface
Cooling, oven temperature used is 60 DEG C~150 DEG C, obtains the first polyurethane cover；
Binding paste is coated on resulting first polyurethane cover of step (3), preliminary drying is half-dried, and oven temperature used is 60 DEG C
It~120 DEG C, is bonded, dries with the first polyurethane foam layer surface of the wet half-finished product of the+the first polyurethane foaming layer of bottom cloth layer
Cooling, oven temperature used is 60 DEG C~150 DEG C, removes release paper, and release paper lines is transferred to the first polyurethane cover
Surface obtains fitting semi-finished product；
Release paper unreels, and coats the second polyurethane cover slurry, coating thickness 0.10-0.25mm, drying on release paper surface
Cooling, oven temperature used is 60 DEG C~150 DEG C, obtains the second polyurethane cover；
The second polyurethane foam slurry, coating thickness 0.2- are coated on resulting second polyurethane cover of step (5)
0.6mm, preliminary drying half are crosslinked half and foam, and oven temperature used is 60 DEG C -150 DEG C, and the residence time is 100-120s in baking oven,
It being bonded with another surface of the bottom layer for being bonded semi-finished product, dries crosslinking curing, oven temperature used is 120-150 DEG C, maturation,
Maturation room temperature is 50-100 DEG C, and the maturation time is 6-72h, removes release paper, and release paper lines is transferred to the second polyurethane face
The surface of layer, obtains the high antifungal gene polyurethane leather of two-sided foaming；
Wherein, the baking oven is at least 2 sections of baking ovens, and every section of oven temperature successively increases, by material to be dried temperature successively
It is dried in raised environment；The first polyurethane foam slurry be first polyurethane foaming layer raw material after mixing
Gained；The first polyurethane cover slurry be first polyurethane cover raw material after mixing gained；The bonding
Slurry be the adhesive layer raw material after mixing gained；The second polyurethane cover slurry is the second polyurethane cover
Raw material after mixing gained；The second polyurethane foam slurry is that the raw material of second polyurethane foaming layer is uniformly mixed
Gained afterwards.
9. the preparation method of the high antifungal gene polyurethane leather of two-sided foaming according to claim 8, which is characterized in that step
(2) at 25-32 DEG C, dimethylformamide concentration is controlled in 18-22% for temperature control in coagulating basin in；Temperature in the rinsing bowl
Control is at 40-80 DEG C, and the control of dimethylformamide concentration is below 1% in the last one rinsing bowl.
10. the preparation method of the high antifungal gene polyurethane leather of two-sided foaming according to claim 8, which is characterized in that step
Suddenly the first polyurethane foam slurry is scratched described in (2), is scratched with a thickness of 1.8-2.2mm；The+the first polyurethane of bottom cloth layer hair
The wet half-finished product of alveolar layer with a thickness of 1.25-2.45mm, breadth 144cm or more.
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Cited By (1)
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