CN106192442A - A kind of wear-resistant artificial leather and preparation method thereof - Google Patents
A kind of wear-resistant artificial leather and preparation method thereof Download PDFInfo
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- CN106192442A CN106192442A CN201610705608.3A CN201610705608A CN106192442A CN 106192442 A CN106192442 A CN 106192442A CN 201610705608 A CN201610705608 A CN 201610705608A CN 106192442 A CN106192442 A CN 106192442A
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- wear
- artificial leather
- resistant artificial
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- layer slurry
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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
- D06N3/0043—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
- D06N3/0047—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 incorporating air, i.e. froth
-
- 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
-
- 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
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/105—Resistant to abrasion, scratch
-
- 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)
- Textile Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to the preparation method of a kind of wear-resistant artificial leather, surface layer slurry is coated in plain weave release paper, and under the conditions of 140 170 DEG C, dry 70 90S, then foaming layer slurry is coated on surface layer slurry after the drying, and foam under the conditions of 190 200 DEG C, fully after foaming, application of adhesive on foaming layer slurry, then artificial leather base fabric is bonded on the foaming layer slurry being coated with binding agent, and under the conditions of 120 160 DEG C, dry 110 130S, again plain weave release paper is peeled off, it is thus achieved that described wear-resistant artificial leather.The invention still further relates to a kind of wear-resistant artificial leather.The wear-resistant artificial leather that the preparation method of the wear-resistant artificial leather of the present invention prepares has the advantage being effectively improved surface abrasion resistance and folding quality.
Description
Technical field
The present invention relates to artificial leather technology, particularly to a kind of wear-resistant artificial leather and preparation method thereof.
Background technology
In prior art, the preparation method of wear-resistant artificial leather is: step 1) preparation obtains surface layer slurry and foaming layer is starched respectively
Material；Step 2) it is coated in coarse groove release paper with surface layer slurry, dry；Step 3) it is coated on foaming layer slurry and to dry
Surface layer slurry on, then foam at about 170 DEG C；Step 4) it is coated uniformly on foaming layer slurry with binding agent；Step
Rapid 5) by selected base fabric by two running rollers to pressure, it is allowed to bond with foaming layer slurry；Step 6) after drying, then will be thick
Stricture of vagina release paper is peeled off by base material, is made for leather finish.
The leather finish using the preparation method of above-mentioned wear-resistant artificial leather to prepare, is carried out Martindale's test and surface
Folding quality is tested, and result shows, leather finish is tested 20,000 leather surfaces in Martindale and ruptured；(25 DEG C of left sides under room temperature
Right) 50,000 leather surfaces of folding rupture.There is surface abrasion resistance and the imperfect problem of folding quality in the most above-mentioned leather finish.
Summary of the invention
The technical problem to be solved is: provide a kind of wear-resisting people being effectively improved surface abrasion resistance and folding quality
Fabricate-leather and preparation method thereof.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
The preparation method of a kind of wear-resistant artificial leather, is coated in surface layer slurry in plain weave release paper, and in 140-170 DEG C of bar
Dry 70-90S under part, then foaming layer slurry is coated on surface layer slurry after the drying, and enter under the conditions of 190-200 DEG C
After row foaming, fully foaming, application of adhesive on foaming layer slurry, then artificial leather base fabric is bonded in and is coated with binding agent
Foaming layer slurry on, and under the conditions of 120-160 DEG C dry 110-130S, then by plain weave release paper peel off, it is thus achieved that described resistance to
Mill artificial leather.
A kind of wear-resistant artificial leather, is prepared from according to the preparation method of above-mentioned wear-resistant artificial leather.
The beneficial effects of the present invention is:
(1) plain weave release paper is replaced existing coarse groove release paper, it is to avoid uneven due to coarse groove release paper, and make
One-tenth surface layer became uneven, lines ditch bottom surface layer are relatively thin, the generation of the problem of easy fracture, and meanwhile, plain weave release paper prepares
Wear-resistant artificial leather, the thick decorative pattern finished product obtained after follow-up embossing road (such as extruding lines by the way of embossed wheel) is wear-resisting
The surface layer thickness of artificial leather is uniformly, ditch bottom surface layer is thicker and not easy fracture；
(2) blowing temperature is set to 190-200 DEG C, hence it is evident that the blowing temperature higher than about 170 DEG C of prior art, tool
There is the sufficient technique effect of foaming；
(3) wear-resistant artificial leather of acquisition carries out Martindale's test and the test of surface folding quality, and result shows, wear-resisting
Artificial leather leather surface when Martindale tests 50,000 times does not ruptures；Leather during (about 25 DEG C) folding 100,000 times under room temperature
Surface does not ruptures.The resistance to Martindale of wear-resistant artificial leather i.e. obtained tests more than 50,000 times, folding more than 100,000 times under room temperature,
I.e., it is thus achieved that wear-resistant artificial leather there is the advantage being effectively improved surface abrasion resistance and folding quality.
Detailed description of the invention
By describing the technology contents of the present invention in detail, being realized purpose and effect, it is explained below in conjunction with embodiment.
The design of most critical of the present invention is: plain weave release paper is replaced existing coarse groove release paper, makes to prepare
The surface layer thickness of wear-resistant artificial leather is uniformly, ditch bottom surface layer is thicker and not easy fracture.
The present invention provides the preparation method of a kind of wear-resistant artificial leather, is coated in by surface layer slurry in plain weave release paper, and in
Dry 70-90S under the conditions of 140-170 DEG C, then foaming layer slurry is coated on surface layer slurry after the drying, and in 190-
Foam under the conditions of 200 DEG C, fully after foaming, application of adhesive on foaming layer slurry, then artificial leather base fabric is bonded
On the foaming layer slurry being coated with binding agent, and under the conditions of 120-160 DEG C, dry 110-130S, then plain weave release paper is shelled
From, it is thus achieved that described wear-resistant artificial leather.
A kind of wear-resistant artificial leather, is prepared from according to the preparation method of above-mentioned wear-resistant artificial leather.
Knowable to foregoing description, the beneficial effects of the present invention is:
(1) plain weave release paper is replaced existing coarse groove release paper, it is to avoid uneven due to coarse groove release paper, and make
One-tenth surface layer became uneven, lines ditch bottom surface layer are relatively thin, the generation of the problem of easy fracture, and meanwhile, plain weave release paper prepares
Wear-resistant artificial leather, the thick decorative pattern finished product obtained after follow-up embossing road (such as extruding lines by the way of embossed wheel) is wear-resisting
The surface layer thickness of artificial leather is uniformly, ditch bottom surface layer is thicker and not easy fracture；
(2) blowing temperature is set to 190-200 DEG C, hence it is evident that the blowing temperature higher than about 170 DEG C of prior art, tool
There is the sufficient technique effect of foaming；
(3) wear-resistant artificial leather of acquisition carries out Martindale's test and the test of surface folding quality, and result shows, wear-resisting
Artificial leather leather surface when Martindale tests 50,000 times does not ruptures；Leather during (about 25 DEG C) folding 100,000 times under room temperature
Surface does not ruptures.The resistance to Martindale of wear-resistant artificial leather i.e. obtained tests more than 50,000 times, folding more than 100,000 times under room temperature,
I.e., it is thus achieved that wear-resistant artificial leather there is the advantage being effectively improved surface abrasion resistance and folding quality.
Further, the surface of described wear-resistant artificial leather is printed, and under the conditions of 115-125 DEG C, dry 60-
80S。
Seen from the above description, can increase above-mentioned printing operation, printing can use print wheel to make as printing equipment
With.
Further, the described wear-resistant artificial leather after printing is heated 25-35S under the conditions of 150-180 DEG C.After heating
The surface of described wear-resistant artificial leather carry out embossing road.Carry out embossing road by the way of embossed wheel and backgear are to pressure.
Seen from the above description, heating 25-35S under the conditions of 150-180 DEG C can soften the leather, thus facilitates follow-up
The carrying out on embossing road, heating and time sets according to different product.Embossing road can make leather surface form certain stricture of vagina
Road；Carry out after printing embossing road, surface pattern can be made to become apparent from.
Further, by running roller, artificial leather base fabric is bonded on foaming layer slurry.
Seen from the above description, running roller can be passed through, such as, by two running rollers to pressure, make artificial leather base fabric pass through to glue
Mixture is bonded on foaming layer slurry.
Further, described surface layer slurry includes that following raw material is prepared from: Corvic 97-103 part,
Dioctyl phthalate 55-65 part, heat stabilizer 1-2 part and PVC mill base 5-7 part.
Seen from the above description, the proportioning of surface layer slurry can be carried out according to above-mentioned raw materials proportioning.Wherein, heat stabilizer can
To select BaZn.
Further, described foaming layer slurry includes that following raw material is prepared from: Corvic 97-103
Part, dioctyl phthalate 70-90 part, filler 50-70 part, stabilizer 1.5-3 part, foaming agent 2.5-5.5 part and PVC color
Slurry 3-6 part.
Seen from the above description, the proportioning of foaming layer slurry can be carried out according to above-mentioned raw materials proportioning.Wherein, foaming agent can
Selecting AC foam powder, stabilizer can select KZn, and filler can select CaCO3。
Further, described binding agent is polyurethane binder.
Seen from the above description, binding agent can select polyurethane binder.
Embodiments of the invention one are:
The preparation method of a kind of wear-resistant artificial leather, weighs the Corvic 97 parts of weight portion, phthalic acid two pungent
Ester 55 parts, heat stabilizer 1 part and PVC mill base 5 parts, preparation forms surface layer slurry；Weigh weight portion Corvic 97 parts,
Dioctyl phthalate 70 parts, filler 50 parts, stabilizer 1.5 parts, foaming agent 2.5 parts and PVC mill base 3 parts, preparation is formed
Foaming layer slurry；Surface layer slurry is coated in plain weave release paper, and under the conditions of 140 DEG C, dries 70S, then foaming layer is starched
On material coating surface layer slurry after the drying, and foam under the conditions of 190 DEG C, fully after foaming, on foaming layer slurry
Coating polyurethane binder, is then bonded in artificial leather base fabric on the foaming layer slurry being coated with binding agent by running roller, and
Under the conditions of 120 DEG C, dry 110S, then plain weave release paper is peeled off, it is thus achieved that described wear-resistant artificial leather.By described wear-resistant artificial leather
Surface print, and under the conditions of 115 DEG C dry 60S.Described wear-resistant artificial leather after printing is added under the conditions of 150 DEG C
Hot 25S.Carry out embossing road by the way of embossed wheel and backgear are to pressure by the surface of the described wear-resistant artificial leather after heating.
Embodiments of the invention two are:
The preparation method of a kind of wear-resistant artificial leather, weighs the Corvic 103 parts of weight portion, phthalic acid two pungent
Ester 65 parts, heat stabilizer 2 parts and PVC mill base 7 parts, preparation forms surface layer slurry；Weigh the Corvic 103 of weight portion
Part, dioctyl phthalate 90 parts, filler 70 parts, stabilizer 3 parts, foaming agent 5.5 parts and PVC mill base 6 parts, preparation is formed
Foaming layer slurry；Surface layer slurry is coated in plain weave release paper, and under the conditions of 170 DEG C, dries 90S, then foaming layer is starched
On material coating surface layer slurry after the drying, and foam under the conditions of 200 DEG C, fully after foaming, on foaming layer slurry
Coating polyurethane binder, is then bonded in artificial leather base fabric on the foaming layer slurry being coated with binding agent by running roller, and
Under the conditions of 160 DEG C, dry 130S, then plain weave release paper is peeled off, it is thus achieved that described wear-resistant artificial leather.By described wear-resistant artificial leather
Surface print, and under the conditions of 125 DEG C dry 80S.Described wear-resistant artificial leather after printing is added under the conditions of 180 DEG C
Hot 35S.Carry out embossing road by the way of embossed wheel and backgear are to pressure by the surface of the described wear-resistant artificial leather after heating.
Embodiments of the invention three are:
The preparation method of a kind of wear-resistant artificial leather, weighs the Corvic 101 parts of weight portion, phthalic acid two pungent
Ester 61 parts, heat stabilizer 1.5 parts and PVC mill base 6.3 parts, preparation forms surface layer slurry；Weigh the Corvic of weight portion
99 parts, dioctyl phthalate 86 parts, filler 62 parts, stabilizer 2.1 parts, foaming agent 4.1 parts and PVC mill base 4.9 parts, join
System forms foaming layer slurry；Surface layer slurry is coated in plain weave release paper, and under the conditions of 150 DEG C, dries 80S, then will send out
On alveolar layer slurry coating surface layer slurry after the drying, and foam under the conditions of 198 DEG C, fully after foaming, in foaming layer
Coat polyurethane binder on slurry, then by running roller artificial leather base fabric is bonded in the foaming layer slurry being coated with binding agent
On, and under the conditions of 145 DEG C, dry 120S, then plain weave release paper is peeled off, it is thus achieved that described wear-resistant artificial leather.By described wear-resisting people
The surface of fabricate-leather is printed, and dries 70S under the conditions of 121 DEG C.By the described wear-resistant artificial leather after printing in 167 DEG C of conditions
Lower heating 31S.Carry out embossing road by the way of embossed wheel and backgear are to pressure by the surface of the described wear-resistant artificial leather after heating.
Measure of merit
1, the surface layer of the wear-resistant artificial leather that embodiment one to three prepares is observed, it is known that, embodiment one to three preparation obtains
The surface layer of the wear-resistant artificial leather obtained all presents the uniform feature of thickness.
2, the thickness of the ditch bottom surface layer of wear-resistant artificial leather embodiment one to three prepared measures.
Measurement result is: the thickness of the ditch bottom surface layer of the wear-resistant artificial leather that embodiment one to three prepares is all higher than
0.18mm。
3, wear-resistant artificial leather embodiment one to three prepared carries out Martindale's test and surface folding resistance successively
Can test.
Result shows, the wear-resistant artificial leather that embodiment one to three prepares is leather table when Martindale tests 50,000 times
Face does not all rupture；When under room temperature, (about 25 DEG C) turn down 100,000 times, leather surface does not all rupture.The wear-resistant artificial leather i.e. obtained
Resistance to Martindale tests more than 50,000 times, and folding more than 100,000 times under room temperature, i.e. the wear-resistant artificial leather of acquisition has effectively
Improve surface abrasion resistance and the advantage of folding quality.
In sum, the wear-resistant artificial leather that the preparation method of the wear-resistant artificial leather that the present invention provides prepares has effectively
Improve surface abrasion resistance and the advantage of folding quality.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
The equivalents that bright description is made, or directly or indirectly it is used in relevant technical field, the most in like manner it is included in this
In bright scope of patent protection.
Claims (10)
1. the preparation method of a wear-resistant artificial leather, it is characterised in that surface layer slurry is coated in plain weave release paper, and in
Dry 70-90S under the conditions of 140-170 DEG C, then foaming layer slurry is coated on surface layer slurry after the drying, and in 190-
Foam under the conditions of 200 DEG C, fully after foaming, application of adhesive on foaming layer slurry, then artificial leather base fabric is bonded
On the foaming layer slurry being coated with binding agent, and under the conditions of 120-160 DEG C, dry 110-130S, then plain weave release paper is shelled
From, it is thus achieved that described wear-resistant artificial leather.
The preparation method of wear-resistant artificial leather the most according to claim 1, it is characterised in that by the table of described wear-resistant artificial leather
Face is printed, and dries 60-80S under the conditions of 115-125 DEG C.
The preparation method of wear-resistant artificial leather the most according to claim 2, it is characterised in that by the described wear-resisting people after printing
Fabricate-leather heats 25-35S under the conditions of 150-180 DEG C.
The preparation method of wear-resistant artificial leather the most according to claim 3, it is characterised in that by the described wear-resisting people after heating
The surface of fabricate-leather carries out embossing road.
The preparation method of wear-resistant artificial leather the most according to claim 4, it is characterised in that by embossed wheel with backgear to pressure
Mode carry out emboss road.
The preparation method of wear-resistant artificial leather the most according to claim 1, it is characterised in that by running roller by artificial leather base fabric
It is bonded on foaming layer slurry.
The preparation method of wear-resistant artificial leather the most according to claim 1, it is characterised in that described surface layer slurry includes following
Raw material is prepared from: Corvic 97-103 part, dioctyl phthalate 55-65 part, heat stabilizer 1-2 part
With PVC mill base 5-7 part.
The preparation method of wear-resistant artificial leather the most according to claim 1, it is characterised in that described foaming layer slurry include with
Lower raw material is prepared from: Corvic 97-103 part, dioctyl phthalate 70-90 part, filler 50-70
Part, stabilizer 1.5-3 part, foaming agent 2.5-5.5 part and PVC mill base 3-6 part.
The preparation method of wear-resistant artificial leather the most according to claim 1, it is characterised in that described binding agent is viscoelastic polyurethane
Mixture.
10. a wear-resistant artificial leather, it is characterised in that according to the system of the wear-resistant artificial leather described in claim 1-9 any one
Preparation Method is prepared from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610705608.3A CN106192442A (en) | 2016-08-23 | 2016-08-23 | A kind of wear-resistant artificial leather and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610705608.3A CN106192442A (en) | 2016-08-23 | 2016-08-23 | A kind of wear-resistant artificial leather and preparation method thereof |
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| CN201610705608.3A Pending CN106192442A (en) | 2016-08-23 | 2016-08-23 | A kind of wear-resistant artificial leather and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755173A (en) * | 2018-05-07 | 2018-11-06 | 安徽索亚装饰材料有限公司 | A kind of skin carving artificial leather treatment process |
| CN108790295A (en) * | 2018-06-27 | 2018-11-13 | 东台市富安合成材料有限公司 | A kind of anti-wear-resisting novel decorative leather and preparation method thereof |
| CN109112846A (en) * | 2018-07-23 | 2019-01-01 | 南通中奥车用新材料有限公司 | A kind of high-strength abrasion-proof plated film PVC artificial leather |
| CN109208341A (en) * | 2018-09-06 | 2019-01-15 | 福建隆上超纤有限公司 | A kind of preparation method of abrasion-resistance water polyurethane artificial leather |
| CN110846901A (en) * | 2019-11-08 | 2020-02-28 | 佛山市威仕达新材料有限公司 | PVC artificial leather with high compressibility and high recoverability |
| CN110983805A (en) * | 2019-12-27 | 2020-04-10 | 福建宝利特科技股份有限公司 | Corrosion-resistant and wear-resistant artificial leather and preparation method thereof |
| CN111218823A (en) * | 2020-01-14 | 2020-06-02 | 广东远华新材料股份有限公司 | Environment-friendly wear-resistant PVC (polyvinyl chloride) pad and production process thereof |
| CN113308905A (en) * | 2021-06-05 | 2021-08-27 | 百草边大生物科技(青岛)有限公司 | Preparation method of large-organism artificial leather containing bioactive components |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755173A (en) * | 2018-05-07 | 2018-11-06 | 安徽索亚装饰材料有限公司 | A kind of skin carving artificial leather treatment process |
| CN108790295A (en) * | 2018-06-27 | 2018-11-13 | 东台市富安合成材料有限公司 | A kind of anti-wear-resisting novel decorative leather and preparation method thereof |
| CN108790295B (en) * | 2018-06-27 | 2020-07-14 | 东台市富安合成材料有限公司 | Novel wear-resistant decorative leather and preparation method thereof |
| CN109112846A (en) * | 2018-07-23 | 2019-01-01 | 南通中奥车用新材料有限公司 | A kind of high-strength abrasion-proof plated film PVC artificial leather |
| CN109112846B (en) * | 2018-07-23 | 2021-03-02 | 南通中奥车用新材料有限公司 | High-strength wear-resistant coated PVC artificial leather |
| CN109208341A (en) * | 2018-09-06 | 2019-01-15 | 福建隆上超纤有限公司 | A kind of preparation method of abrasion-resistance water polyurethane artificial leather |
| CN110846901A (en) * | 2019-11-08 | 2020-02-28 | 佛山市威仕达新材料有限公司 | PVC artificial leather with high compressibility and high recoverability |
| CN110983805A (en) * | 2019-12-27 | 2020-04-10 | 福建宝利特科技股份有限公司 | Corrosion-resistant and wear-resistant artificial leather and preparation method thereof |
| CN110983805B (en) * | 2019-12-27 | 2022-03-25 | 福建宝利特科技股份有限公司 | Corrosion-resistant and wear-resistant artificial leather and preparation method thereof |
| CN111218823A (en) * | 2020-01-14 | 2020-06-02 | 广东远华新材料股份有限公司 | Environment-friendly wear-resistant PVC (polyvinyl chloride) pad and production process thereof |
| CN113308905A (en) * | 2021-06-05 | 2021-08-27 | 百草边大生物科技(青岛)有限公司 | Preparation method of large-organism artificial leather containing bioactive components |
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Application publication date: 20161207 |
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