CN109652994A - Two-sided no folding line no-solvent polyurethane luggage synthetic leather of one kind and preparation method thereof - Google Patents
Two-sided no folding line no-solvent polyurethane luggage synthetic leather of one kind and preparation method thereof Download PDFInfo
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- CN109652994A CN109652994A CN201811459515.2A CN201811459515A CN109652994A CN 109652994 A CN109652994 A CN 109652994A CN 201811459515 A CN201811459515 A CN 201811459515A CN 109652994 A CN109652994 A CN 109652994A
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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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- 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
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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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
- D06N3/146—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 characterised by the macromolecular diols used
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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
- D06N3/147—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 characterised by the isocyanates used
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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
- D06N2209/00—Properties of the materials
- D06N2209/08—Properties of the materials having optical properties
- D06N2209/0807—Coloured
- D06N2209/083—Multi-coloured
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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
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/143—Inert, i.e. inert to chemical degradation, corrosion resistant
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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
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1635—Elasticity
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
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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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses a kind of two-sided no folding line no-solvent polyurethane luggage synthetic leather, the synthetic leather does not successively foam no-solvent polyurethane layer and reverse side polyurethane cover forms by do not foam no-solvent polyurethane layer, elastic force cloth layer, apofacial reaction type of front polyurethane cover, positive reaction type from top to bottom.Product uses the solvent-free solid construction not foamed, and compensates for the leather surface creasing problems of stretch fabric base hairy effect influence, and synthetic leather product two-sided fold obtained all has the high feature of no folding line, recovery.The invention also discloses the preparation methods of synthetic leather.
Description
Technical field
The invention belongs to Synthetic Leather fields, and in particular to a kind of two-sided no folding line no-solvent polyurethane luggage conjunction
Finished leather and preparation method thereof.
Background technique
Wet type luggage leather is big with Synthetic Leather dosage currently on the market, and decorative pattern texture is various, soft plentiful, property
Valence uses a large amount of organic solvents than high in wet production process, there is recycling, energy consumption is high, difficult recycling, product completely
The problems such as residual organic solvent and occupational health." the 5th CNTAC-ZDHC harmful chemical control held for 2017
" synthetic leather industry DMF cuts down action implementation plan " is proposed in shareholder and green manufacturing meeting ", which points out
The year two thousand twenty will realize that DMF usage amount reduces by 25% target.Therefore, it promotes solvent-free process to prepare Synthetic Leather, improves
Realize clean production standard, realize DMF zero-emission by be the following Synthetic Leather important development direction.Meanwhile it is common double
Face paste product causes product two-sided fold variant, in the luggage product being made into since cloth base two sides fluffing length style is different
Lining differs larger with surface effect, influences case forming effect.
Summary of the invention
Based on this, the present invention provides a kind of two-sided no folding line no-solvent polyurethane luggage synthetic leather, the synthetic leather
For five-layer structure, including elastic force cloth layer, on the two sides of the elastic force cloth layer, fitting reactive pattern does not foam solvent-free poly- ammonia
Ester layer does not foam in the response type and is fitted with front polyurethane cover, reverse side polyurethane face respectively on no-solvent polyurethane layer
Layer.Product uses the solvent-free solid construction not foamed, and compensates for the leather surface creasing problems of stretch fabric base hairy effect influence,
Synthetic leather product two-sided fold obtained all has the high feature of no folding line, recovery.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of two-sided no folding line no-solvent polyurethane luggage synthetic leather, the synthetic leather are successively poly- by front from top to bottom
Urethane surface layer, positive reaction type do not foam no-solvent polyurethane layer, elastic force cloth layer, apofacial reaction type do not foam solvent-free poly- ammonia
Ester layer and reverse side polyurethane cover composition.The invention is not foamed solvent-free in the two sides of elastic force cloth layer fitting response type
Layer of polyurethane, using the solvent-free solid construction not foamed, the leather surface fold for compensating for the influence of stretch fabric base hairy effect is asked
Topic, synthetic leather product two-sided fold obtained all have the high feature of no folding line, recovery.
Preferably, the elastic force cloth layer with a thickness of 0.6~1.5mm；The positive reaction type does not foam solvent-free poly-
Urethane layer and the apofacial reaction type do not foam no-solvent polyurethane layer moisture≤2000ppm.
It is another object of the present invention to provide a kind of above-mentioned two-sided no folding line no-solvent polyurethane luggage synthetic leather
Preparation method, comprising the following steps:
A, polyurethane cover slurry in front is coated in release paper, drying forms front polyurethane cover, in the front
Response type is coated on polyurethane cover not foam no-solvent polyurethane slurry, is formed positive reaction type after preheating and is not foamed without molten
Agent layer of polyurethane；
B, the stretch fabric base and the positive reaction type no-solvent polyurethane layer that do not foam are bonded, high-temperature maturing is made
Front no-solvent polyurethane luggage synthetic leather semi-finished product；
C, reverse side polyurethane cover slurry is coated in release paper, drying forms reverse side polyurethane cover, in the front
Response type described in coating step a does not foam no-solvent polyurethane slurry on polyurethane cover, and it is anti-that reverse side is formed after preheating
Type is answered not foam no-solvent polyurethane layer；
D, by the elastic force cloth layer of front no-solvent polyurethane luggage synthetic leather semi-finished product and the apofacial reaction
Type does not foam the fitting of no-solvent polyurethane layer, and two-sided no folding line no-solvent polyurethane luggage synthetic leather is made in high-temperature maturing.
Further, reverse side polyurethane cover described in polyurethane cover slurry in front described in step a and step c
Slurry is made of by weight following components:
100 parts of polyester polyether polyurethane resin,
15~20 parts of pigment,
0.08~0.1 part of levelling agent.
Preferably, 100% modulus of the polyester polyether polyurethane resin is 40~100kg/cm2, the pigment is
Organic mill base, the levelling agent are polyether silicones.
Further, the response type no-solvent polyurethane slurry that do not foam is made of by weight following components:
Preferably, the average molecular mass of the polyester diol is 1000~3000；
The chain extender is the combination of one or more of ethylene glycol, propylene glycol, 1,4- butanediol；
The filler is CaCO3、AL(OH)3At least one of, the partial size of the filler is greater than 800 mesh；
The catalyst is organic bismuth catalyst, and the organic bismuth catalyst is preferably in an embodiment of the present invention
At least one of BICAT8106, BICAT 3228, BICAT 4232；
The Isocyanate prepolymers body is isocyanate terminated urethane resin, and viscosity is 1500~3000cps/25
℃。
Further, the reverse side polyurethane cover of the front polyurethane cover slurry in the step a and the step c are starched
Expect that the viscosity at 25 DEG C is 2000~3000cps, coating thickness is 13~16, and the step a neutralizes the step c
The temperature of middle drying is 110~130 DEG C, in the step a and step c preheating condition be 90~120 DEG C of heating 2~
3min。
Further, response type described in step a and step c do not foam solvent-free slurry coating thickness be 20~24
Silk.
Further, the high-temperature maturing temperature in step b and step d is 120~140 DEG C, and the curing time is 6~
10min。
In general, luggage handbag manufacture need by sorting, draw a design, random sample, stock up, operate on mould, cut out material, material
Each process flow such as piece printing, upper glue/sewing, packaging.A luggage is usually spliced by dozens or even hundreds of piece of components
Assemble, the complexity manufactured is self-evident.Especially in gluing/sewing major ingredient and auxiliary material, process is tedious takes
When expenses of labour.The invention using two-sided solvent-free processing procedure, preparation method and equipment are advanced, the fast reaction of use molding
The production technology cleanly production important process one of novel as synthetic leather, high production efficiency, technology controlling and process are stable, produce
Process organic solvent-free, product are free of harmful substance, not only avoid organic solvent from using, volatilize and residual in production and processing,
It solves the problems, such as solvent recovery during wet production, while reducing the volatilization and residue problem of organic solvent, meet conjunction
The environmentally protective development trend of finished leather industry.
Compared with prior art, two-sided no folding line no-solvent polyurethane luggage prepared by the present invention has feel with synthetic leather
It is plentiful, resilience is good, two-sided all has that color abundant, texture fashion are three-dimensional, and manufactured luggage feel has the brief reality of fashion
The characteristics of using；Using the solvent-free structure not foamed, product is two-sided without obvious fold, and manufactured case forming effect is three-dimensional, product
Matter is high-grade, the preferred material for packet of being especially formed.
Meanwhile the response type that uses of the present invention no-solvent polyurethane slurry that do not foam imparts the excellent hydrolytic resistance of product
Energy, high-wear resistance, excellent room temperature song be rich and cold tolerance and environmental-protecting performance, can be satisfied with medium-to-high grade and high strength loop
The requirement of border luggage product.
Specific embodiment
Further clear and complete explanation is done to technical solution of the present invention below with reference to specific embodiment.
Embodiment 1
The front polyurethane cover slurry that a layer thickness is 13 is coated in release paper, forms front in 120 DEG C of drying
Polyurethane cover；It is that 30 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated on the polyurethane cover of front
Material heats in 90 DEG C and forms the positive reaction type that moisture content is 1200ppm after 3min and do not foam no-solvent polyurethane layer；It will be thick
The stretch fabric base and the positive reaction type no-solvent polyurethane layer that do not foam that degree is 1.0mm are bonded, in 130 DEG C of curing 10min,
Two-sided no folding line no-solvent polyurethane luggage synthetic leather semi-finished product are obtained after release paper is removed；One layer is coated in release paper
With a thickness of 13 reverse side polyurethane cover slurries, reverse side polyurethane cover is formed in 120 DEG C of drying；In reverse side polyurethane cover
Upper coating a layer thickness is that 30 response types do not foam no-solvent polyurethane slurry, and formation moisture contains after 90 DEG C of heating 3min
Amount is that the apofacial reaction type of 1200ppm does not foam no-solvent polyurethane layer；Two-sided no folding line no-solvent polyurethane luggage is closed
The elastic force cloth layer of finished leather semi-finished product and apofacial reaction type the no-solvent polyurethane layer that do not foam are bonded, and are cured in 130 DEG C
10min obtains two-sided no folding line no-solvent polyurethane luggage synthetic leather products after removing release paper.
Wherein, in the present embodiment, front polyurethane cover slurry, viscosity of the reverse side polyurethane cover slurry at 25 DEG C are
2200cps, and response type do not foam no-solvent polyurethane slurry composition and each component additive amount it is as shown in the table:
Note: the polyester polyether polyurethane resin used in the present embodiment is Hefei Anli New Material Polyurethane Co., Ltd.
LT-75, isocyanic acid performed polymer be Hefei Anli New Material Polyurethane Co., Ltd. AL-1040B (main active and often
The polyester polyether polyurethane resin of rule is identical with isocyanic acid performed polymer), the molecular weight of polyester diol is 1000~3000,
Remaining is commercial product.
Embodiment 2
The front polyurethane cover slurry that a layer thickness is 15 is coated in release paper, forms front in 110 DEG C of drying
Polyurethane cover；It is that 30 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated on the polyurethane cover of front
Material heats in 100 DEG C and forms the positive reaction type that moisture content is 800ppm after 2.5min and do not foam no-solvent polyurethane layer；It will
It is bonded with a thickness of stretch fabric base and positive reaction type the no-solvent polyurethane layer that do not foam of 1.2mm, is cured in 140 DEG C
6min obtains two-sided no folding line no-solvent polyurethane luggage synthetic leather semi-finished product after removing release paper；It is applied in release paper
The reverse side polyurethane cover slurry that a layer thickness is 15 is covered, forms reverse side polyurethane cover in 110 DEG C of drying；In the poly- ammonia of reverse side
It is that 30 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated in ester surface layer, after 100 DEG C of heating 2.5min
The apofacial reaction type that moisture content is 800ppm is formed not foam no-solvent polyurethane layer；By two-sided no folding line no-solvent polyurethane
The elastic force cloth layer of luggage synthetic leather semi-finished product and apofacial reaction type the no-solvent polyurethane layer that do not foam are bonded, in 140
DEG C curing 6min, two-sided no folding line no-solvent polyurethane luggage synthetic leather products are obtained after release paper is removed.
Wherein, in the present embodiment, front polyurethane cover slurry, viscosity of the reverse side polyurethane cover slurry at 25 DEG C are
2000cps, and response type do not foam no-solvent polyurethane slurry composition and each component additive amount it is as shown in the table:
Note: the polyester polyether polyurethane resin used in the present embodiment is Hefei Anli New Material Polyurethane Co., Ltd.
LT-75, isocyanic acid performed polymer be Hefei Anli New Material Polyurethane Co., Ltd. AL-1040B (main active and often
The polyester polyether polyurethane resin of rule is identical with isocyanic acid performed polymer), the molecular weight of polyester diol is 1000~3000,
Remaining is commercial product.
Embodiment 3
The front polyurethane cover slurry that a layer thickness is 16 is coated in release paper, forms front in 130 DEG C of drying
Polyurethane cover；It is that 40 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated on the polyurethane cover of front
Material heats in 110 DEG C and forms the positive reaction type that moisture content is 980ppm after 2min and do not foam no-solvent polyurethane layer；It will be thick
The stretch fabric base and the positive reaction type no-solvent polyurethane layer that do not foam that degree is 0.6mm are bonded, in 135 DEG C of curing 8min,
Two-sided no folding line no-solvent polyurethane luggage synthetic leather semi-finished product are obtained after release paper is removed；One layer is coated in release paper
With a thickness of 16 reverse side polyurethane cover slurries, reverse side polyurethane cover is formed in 130 DEG C of drying；In reverse side polyurethane cover
Upper coating a layer thickness is that 40 response types do not foam no-solvent polyurethane slurry, forms moisture after 110 DEG C of heating 2min
Content is that the apofacial reaction type of 980ppm does not foam no-solvent polyurethane layer；Two-sided no folding line no-solvent polyurethane luggage is closed
The apofacial reaction type coated on the elastic force cloth layers of finished leather semi-finished product and reverse side polyurethane cover does not foam no-solvent polyurethane layer
It is bonded, in 135 DEG C of curing 8min, two-sided no folding line no-solvent polyurethane luggage synthetic leather is obtained after release paper is removed
Finished product.
Wherein, in the present embodiment, front polyurethane cover slurry, viscosity of the reverse side polyurethane cover slurry at 25 DEG C are
3000cps, and response type do not foam no-solvent polyurethane slurry composition and each component additive amount it is as shown in the table:
Note: the polyester polyether polyurethane resin used in the present embodiment is Hefei Anli New Material Polyurethane Co., Ltd.
LT-75, isocyanic acid performed polymer be Hefei Anli New Material Polyurethane Co., Ltd. AL-1040B (main active and often
The polyester polyether polyurethane resin of rule is identical with isocyanic acid performed polymer), the molecular weight of polyester diol is 1000~3000,
Remaining is commercial product.
Embodiment 4
The front polyurethane cover slurry that a layer thickness is 15 is coated in release paper, forms front in 130 DEG C of drying
Polyurethane cover；It is that 20 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated on the polyurethane cover of front
Material heats in 120 DEG C and forms the positive reaction type that moisture content is 1300ppm after 3min and do not foam no-solvent polyurethane layer；It will
It is bonded with a thickness of stretch fabric base and positive reaction type the no-solvent polyurethane layer that do not foam of 1.5mm, is cured in 120 DEG C
10min obtains two-sided no folding line no-solvent polyurethane luggage synthetic leather semi-finished product after removing release paper；It is applied in release paper
The reverse side polyurethane cover slurry that a layer thickness is 15 is covered, forms reverse side polyurethane cover in 130 DEG C of drying；In the poly- ammonia of reverse side
It is that 20 response types do not foam no-solvent polyurethane slurry that a layer thickness is coated in ester surface layer, the shape after 120 DEG C of heating 3min
It does not foam no-solvent polyurethane layer at the apofacial reaction type that moisture content is 1300ppm；By two-sided no folding line no-solvent polyurethane
The apofacial reaction type coated on the elastic force cloth layer and reverse side polyurethane cover of luggage synthetic leather semi-finished product does not foam solvent-free
Layer of polyurethane is bonded, and in 120 DEG C of curing 10min, two-sided no folding line no-solvent polyurethane case is obtained after release paper is removed
Packet uses synthetic leather products.
Wherein, in the present embodiment, front polyurethane cover slurry, viscosity of the reverse side polyurethane cover slurry at 25 DEG C are
2400cps, and response type do not foam no-solvent polyurethane slurry composition and each component additive amount it is as shown in the table:
Note: the polyester polyether polyurethane resin used in the present embodiment is Hefei Anli New Material Polyurethane Co., Ltd.
LT-75, isocyanic acid performed polymer be Hefei Anli New Material Polyurethane Co., Ltd. AL-1040B (main active and often
The polyester polyether polyurethane resin of rule is identical with isocyanic acid performed polymer), the molecular weight of polyester diol is 1000~3000,
Remaining is commercial product.
To verify experiment effect of the invention, by the two-sided no solvent-free poly- ammonia of folding line made from Examples 1 to 4 in the present invention
Ester luggage carries out dependence test with synthetic leather, and 200,000 times are deflected at 25 DEG C and is not cracked, 80,000 times are deflected at -10 DEG C and is not cracked,
And it is two-sided without folding line；The H-22 grinding wheel of Taber test is carried out, weight bearing 1Kg scratch resistance performance is more than 500 times；Climatic chamber 70
In DEG C, humidity is placed 7 weeks under conditions of being 95%, and leather surface not dusting is not cracked.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of two-sided no folding line no-solvent polyurethane luggage synthetic leather, which is characterized in that the synthetic leather from top to bottom according to
It is secondary not foamed by do not foam no-solvent polyurethane layer, elastic force cloth layer, apofacial reaction type of front polyurethane cover, positive reaction type
No-solvent polyurethane layer and reverse side polyurethane cover composition.
2. two-sided no folding line no-solvent polyurethane luggage synthetic leather as described in claim 1, which is characterized in that the elastic force
Cloth layer with a thickness of 0.6 ~ 1.5mm；The positive reaction type does not foam no-solvent polyurethane layer and the apofacial reaction type not
Foam no-solvent polyurethane layer moisture≤2000ppm.
3. a kind of preparation method of two-sided no folding line no-solvent polyurethane luggage synthetic leather of any of claims 1 or 2, special
Sign is, comprising the following steps:
A, polyurethane cover slurry in front is coated in release paper, drying forms front polyurethane cover, in the poly- ammonia in front
Response type is coated in ester surface layer not foam no-solvent polyurethane slurry, formed after preheating positive reaction type do not foam it is solvent-free poly-
Urethane layer；
B, the stretch fabric base and the positive reaction type no-solvent polyurethane layer that do not foam are bonded, front is made in high-temperature maturing
No-solvent polyurethane luggage synthetic leather semi-finished product；
C, reverse side polyurethane cover slurry is coated in release paper, drying forms reverse side polyurethane cover, in the poly- ammonia of the reverse side
Response type described in coating step a does not foam no-solvent polyurethane slurry in ester surface layer, and apofacial reaction type is formed after preheating
Do not foam no-solvent polyurethane layer；
D, not by the elastic force cloth layer of front no-solvent polyurethane luggage synthetic leather semi-finished product and the apofacial reaction type
The no-solvent polyurethane layer that foams is bonded, and two-sided no folding line no-solvent polyurethane luggage synthetic leather is made in high-temperature maturing.
4. preparation method as claimed in claim 3, which is characterized in that polyurethane cover slurry in front described in step a and
Reverse side polyurethane cover slurry described in step c is made of by weight following components:
100 parts of polyester polyether polyurethane resin,
15 ~ 20 parts of pigment,
0.08 ~ 0.1 part of levelling agent.
5. preparation method as claimed in claim 4, which is characterized in that 100% modulus of the polyester polyether polyurethane resin
For 40 ~ 100kg/cm2, the pigment is organic mill base, and the levelling agent is polyether silicones.
6. preparation method as claimed in claim 3, which is characterized in that the response type does not foam no-solvent polyurethane slurry
It is made of by weight following components:
100 parts of polyester diol,
2 ~ 10 parts of chain extender,
30 ~ 50 parts of filler,
0.05 ~ 0.3 part of catalyst,
70 ~ 150 parts of Isocyanate prepolymers body.
7. preparation method as claimed in claim 6, which is characterized in that the average molecular mass of the polyester diol is
1000~3000；
The chain extender is the combination of one or more of ethylene glycol, propylene glycol, 1,4- butanediol；
The filler is CaCO3、AL(OH)3At least one of, the partial size of the filler is greater than 800 mesh；
The catalyst is organic bismuth catalyst；
The Isocyanate prepolymers body is isocyanate terminated urethane resin, and viscosity is 1500 ~ 3000cps/25 DEG C.
8. preparation method as claimed in claim 3, which is characterized in that front polyurethane cover slurry in the step a and
Viscosity of the reverse side polyurethane cover slurry of the step c at 25 DEG C is 2000 ~ 3000cps, and coating thickness is 13 ~ 16
Silk, it is 110 ~ 130 DEG C that the step a, which neutralizes the temperature dried in the step c, preheating in the step a and step c
Condition is 90 ~ 120 DEG C of 2 ~ 3min of heating.
9. preparation method as claimed in claim 3, which is characterized in that response type described in step a and step c does not foam nothing
The coating thickness of solvent slurry is 20 ~ 24.
10. preparation method as claimed in claim 3, which is characterized in that the high-temperature maturing temperature in step b and step d is
120 ~ 140 DEG C, the curing time is 6 ~ 10min.
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| CN201811459515.2A CN109652994A (en) | 2018-11-30 | 2018-11-30 | Two-sided no folding line no-solvent polyurethane luggage synthetic leather of one kind and preparation method thereof |
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| CN201811459515.2A CN109652994A (en) | 2018-11-30 | 2018-11-30 | Two-sided no folding line no-solvent polyurethane luggage synthetic leather of one kind and preparation method thereof |
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| CN113123143A (en) * | 2019-12-31 | 2021-07-16 | 苏州瑞高新材料有限公司 | High-peeling-force PU double-sided leather and preparation method thereof |
| CN115787316A (en) * | 2022-12-14 | 2023-03-14 | 安徽安利材料科技股份有限公司 | High-performance crease-free polyurethane synthetic leather and preparation method and application thereof |
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Application publication date: 20190419 |