CN102505517A - Method for producing synthetic leather for clothes by chemical foaming pore forming coating technology - Google Patents
Method for producing synthetic leather for clothes by chemical foaming pore forming coating technology Download PDFInfo
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Abstract
A method for producing synthetic leather for clothes by chemical foaming pore forming coating technology adopts a nonwoven fabric for synthetic leather as a base material, employs multilayer chemical foaming hole forming coating technology, solves problems in production process of synthetic leather for clothes, and produces synthetic leather for clothes with high performance. A bottom foamed coating is manufactured on a surface of a nonwoven fabric for synthetic leather through a roller coating method by using mixed slurry containing solvent-type polyurethane, a chemical foaming agent, a low temperature foaming modifier and a pore forming agent; original solvent-type polyurethane wet-method solidification coating technology is substituted; and the solvent pollution problem and the solvent residue problem of DMF are solved; a film is formed on a release paper surface through a scrape coating method by mixed slurry containing solvent-type polyurethane and the pore forming agent; an adhesive is coated on the film by scrape coating; then the film is adhered to the nonwoven fabric for synthetic leather with the bottom foamed coating; a solvent-type polyurethane dry-method transfer-film coating is formed on the bottom foamed coating; and finally water washing is performed to obtain the synthetic leather for clothes.
Description
Technical field
The present invention relates to the production technology of synthetic leather, and particularly a kind of chemical blowing pore coating technology of utilizing is produced the method for clothes with synthetic leather.
Background technology
Synthetic leather is simulation natural leather institutional framework and serviceability, and can be used as the composite of natural leather substitute.Usually the nonwoven fabric with the dipping high molecular polymer is the simulation lamina reticularis; With microvoid polyurethane layer simulation grain layer; Resulting synthetic leather positive and negative are all quite similar with leather; And have certain gas permeability,, be widely used in and make footwear, boots, case and bag and ball etc. more near natural leather than ordinary people fabricate-leather.
According to State Statistics Bureau 316 tame artificial leather synthetic leather enterprise productions more than the scale are added up; 2010 annual Chinese people fabricate-leather synthetic leather total outputs are 218.9 ten thousand tons, close 3,900,000,000 square metres, wherein; 24.3 hundred million square metres of Synthetic Leathers, its production rank the first in the world.According to Chinese's fabricate-leather synthetic leather net investigation statistics, Synthetic Leather whole nation production line was 1575 in 2010, increased by 17% than 2009, and all in all, under the situation of big economic environment recovery, China's Synthetic Leather shows rapid growth momentum.
People develop the initial purpose of synthetic leather, are the structures of imitation natural leather, and the substitute material of exploitation natural leather is to solve raw material deficiency and problem of environmental pollution in the natural leather production.In the development process of synthetic leather, the technology of main body has two aspects, is the exploitation of synthetic leather base fabric on the one hand, the exploitation of synthetic leather coating technology on the other hand, and the structure corresponding with it is exactly the lamina reticularis and the grain layer of natural leather.So the coating of synthetic leather begins just to have the intention of imitation natural leather grain, the main flow that just becomes the synthetic leather product development of the synthetic leather of coating.The synthetic leather of coating is two yuan of complexs of polymer membrane and non-weaving cloth; Have the performance of high molecular polymer and non-weaving cloth concurrently; Coating can be regarded as a space, and it can hold various materials, gives non-weaving cloth and has various properties and function.So the rational Application of coating technology is the main means of synthetic leather new product development.
In the Application Areas of synthetic leather, clothing leather is one of its maximum Application Areas, also is one of field of at present tool potentiality to be exploited.Why clothes are in initial development phase with synthetic leather market, and main cause is that the production of clothing leather still exists huge bottleneck technical problem, is difficult to produce high performance clothes and uses synthetic leather.At present, the production technology below clothes adopt with the production of synthetic leather, its technological process moves membrane coat (upper strata) for synthetic with non-weaving cloth → solvent borne polyurethane wet method gel coating (bottom) → washing → drying → solvent borne polyurethane dry method.The clothes that adopt this production method to produce are used synthetic leather; Exist following great technical problem: one of which; Adopt solvent borne polyurethane wet method gel coating to make bottom; The wet method gel coating is with solvent borne polyurethane (PU) slurry, utilizes coating roller to be coated on the surface of use for synthetic leather non-weaving cloth, gets into " H then
2O-DMF " coagulating bath, PU is solidified and form film with microcellular structure.Adopted DMF (dimethyl formamide) to make solvent in this technology, process can cause the solvent contamination of DMF.And water can not be replaced the DMF in the polyurethane completely, can cause the DMF residue problem of product, finally causes the product safety problem.And this product safety problem, can be in numerous technology barriers and trade barrier, limits product gets into the up-market.They are two years old; Adopt the solvent borne polyurethane dry method to move membrane coat and make top layer, this technology is with the solvent borne polyurethane slurry, utilizes doctor knife coater to be coated on the surface of release liners; Then with have wet method and move the use for synthetic leather non-weaving cloth of gel coating and fit; Peel off after the drying, polyurethane film is transferred to the surface that wet method is moved rete, finally obtain clothes and use synthetic leather.Because this process using solvent-borne type Finish System; What obtain is the coating of sealing; This coating makes that the vapor pervious performance and the permeability of finished product synthetic leather are very poor; Cause clothes with synthetic leather sanitation performance very poor, product quality and class are not high, are difficult to satisfy the performance requirement as dress materials.
Summary of the invention
The object of the present invention is to provide a kind of micropore that in the synthetic leather coating, can form connectivity, produce the method for clothes with the vapor pervious performance of synthetic leather and the chemical blowing pore coating technology of utilizing of permeability with synthetic leather thereby improved clothes.
For achieving the above object, the technical scheme that the present invention adopts is:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 50～80 parts of solid contents; 50～80 parts of MEKs (MEK), 2～6 parts of blowing agent Celogen Azs, 0.5～1 part of calcium stearate and 3～5 parts of higher alcohols mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 160g～280g/m
2, it is dry under 60～80 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 140～180 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 50～80 parts of solid contents be 30% in rigid solvent borne polyurethane, 60～100 parts of MEKs (MEK), 30～50 parts of toluene and 3～5 parts of higher alcohols mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 60～90 parts of solid contents, 60～100 parts of MEKs (MEK), and 10～30 parts of DMF and 3～5 parts of higher alcohols mix stirrings and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 30g～90g/m
2, it is dry under 100～140 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 50g～120g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 140～170 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 55～95 ℃ hot water washing 5～10 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage; Form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
Described higher alcohols adopt the high triacontanol of 8～31 carbon atoms.
The present invention as base material, adopts multilayer chemical foaming pore coating technology with the use for synthetic leather non-weaving cloth, solves clothes with the problems referred to above that exist in the synthetic leather production technology, produces high performance clothes and uses synthetic leather.Have specifically following some: one of which; Utilize the method and the mixed slurry that contains solvent borne polyurethane, CBA, low-temp foaming modifier and pore-foaming agent of roller coat; On use for synthetic leather non-weaving cloth surface; Make the bottom intumescent coating, substitute original solvent type polyurethane wet method gel coating technology, solved solvent contamination problem and the residue problem of DMF; They are two years old; Utilize the method and the mixed slurry that contains solvent borne polyurethane and pore-foaming agent of blade coating; Surface coated film forming in release liners; Scrape above that behind the coating adhesive and fit, form the solvent borne polyurethane dry method on the bottom intumescent coating and move membrane coat making, finally obtain clothes and use synthetic leather with having the use for synthetic leather non-weaving cloth of making the bottom intumescent coating.Its three, utilize water to rub machine, clothes are washed in hot water with synthetic leather; Pore-foaming agent is come out by the hot water lixiviate; Thereby in the synthetic leather coating, form the micropore of connectivity, improved vapor pervious performance and the permeability of clothes, obtained the good clothes of sanitation performance and used synthetic leather with synthetic leather.The clothes that utilize the present invention to produce are used synthetic leather, are satisfying under the condition of conventional physical and mechanical properties permeable gas property>=1.8mg/cm
2H, gas permeability>=2000ml/cm
2H).
The specific embodiment
Embodiment 1:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 50 parts of solid contents; 60 parts of MEKs (MEK), 3 parts of blowing agent Celogen Azs, the high triacontanol of 0.8 part of calcium stearate and 4 parts of 8～31 carbon atoms mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 160g/m
2, it is dry under 60 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 180 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 80 parts of solid contents be 30% in rigid solvent borne polyurethane, 100 parts of MEKs (MEK), the high triacontanol of 50 parts of toluene and 5 parts of 8～31 carbon atoms mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 70 parts of solid contents, and 60 parts of MEKs (MEK), the high triacontanol of 20 parts of DMF and 5 parts of 8～31 carbon atoms mix stirring and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 90g/m
2, it is dry under 100 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 80g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 160 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 80 ℃ hot water washing 7 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage, form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
Embodiment 2:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 70 parts of solid contents; 50 parts of MEKs (MEK), 5 parts of blowing agent Celogen Azs, the high triacontanol of 0.5 part of calcium stearate and 3 parts of 8～31 carbon atoms mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 200g/m
2, it is dry under 80 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 140 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 60 parts of solid contents be 30% in rigid solvent borne polyurethane, 80 parts of MEKs (MEK), the high triacontanol of 45 parts of toluene and 3 parts of 8～31 carbon atoms mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 90 parts of solid contents, and 80 parts of MEKs (MEK), the high triacontanol of 18 parts of DMF and 3 parts of 8～31 carbon atoms mix stirring and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 60g/m
2, it is dry under 120 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 100g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 150 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 55 ℃ hot water washing 10 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage, form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
Embodiment 3:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 80 parts of solid contents; 70 parts of MEKs (MEK), 2 parts of blowing agent Celogen Azs, the high triacontanol of 0.9 part of calcium stearate and 5 parts of 8～31 carbon atoms mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 240g/m
2, it is dry under 68 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 150 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 50 parts of solid contents be 30% in rigid solvent borne polyurethane, 60 parts of MEKs (MEK), the high triacontanol of 30 parts of toluene and 4 parts of 8～31 carbon atoms mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 60 parts of solid contents, and 100 parts of MEKs (MEK), the high triacontanol of 30 parts of DMF and 5 parts of 8～31 carbon atoms mix stirring and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 30g/m
2, it is dry under 135 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 50g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 170 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 70 ℃ hot water washing 8 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage, form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
Embodiment 4:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 60 parts of solid contents; 80 parts of MEKs (MEK), 6 parts of blowing agent Celogen Azs, the high triacontanol of 1 part of calcium stearate and 3 parts of 8～31 carbon atoms mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 280g/m
2, it is dry under 73 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 165 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 70 parts of solid contents be 30% in rigid solvent borne polyurethane, 90 parts of MEKs (MEK), the high triacontanol of 35 parts of toluene and 3 parts of 8～31 carbon atoms mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 80 parts of solid contents, and 70 parts of MEKs (MEK), the high triacontanol of 10 parts of DMF and 4 parts of 8～31 carbon atoms mix stirring and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 50g/m
2, it is dry under 140 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 120g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 150 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 90 ℃ hot water washing 5 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage, form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
The present invention is a base material with the use for synthetic leather non-weaving cloth; At first; Utilize the method and the mixed slurry that contains solvent borne polyurethane, CBA, low-temp foaming modifier and pore-foaming agent of roller coat,, carry out drying through baking oven then in use for synthetic leather non-weaving cloth surface coated; Control baking temperature and time are carried out chemical blowing, make the bottom intumescent coating; Then; Utilize the method and the mixed slurry that contains solvent borne polyurethane and pore-foaming agent of blade coating; In the surface coated film forming of release liners, carry out drying through baking oven then, scrape behind the coating adhesive above that and have the use for synthetic leather non-weaving cloth of making the bottom intumescent coating and fit; Peel off the back and form the solvent borne polyurethane dry method and move membrane coat making on the bottom intumescent coating, finally obtain clothes and use synthetic leather; At last; Utilize water to rub machine; Clothes are washed in 55～95 ℃ hot water with synthetic leather, and pore-foaming agent is come out by the hot water lixiviate, thereby in the synthetic leather coating, forms the micropore of connectivity; Improved vapor pervious performance and the permeability of clothes, obtained the good clothes of sanitation performance and used synthetic leather with synthetic leather.Key technology that this law is bright and principle have following some: one of which; Under the condition of heat drying, CBA can decompose, and discharges inert gas; In the solvent borne polyurethane coating, form abscess; Make the bottom intumescent coating, substitute original solvent type polyurethane wet method gel coating technology, solved solvent contamination problem and the residue problem of DMF.Its two, bottom intumescent coating and dry method are moved and have all been used the pore-foaming agent higher alcohols in the membrane coat, higher alcohols can form the crystallization of needle-like in the solvent borne polyurethane coating; When 55～95 ℃ hot water is washed; Higher alcohols can be come out by the hot water lixiviate, thereby in polyurethane coating, form the needle-like space, and these spaces can connect the abscess in the bottom intumescent coating; And make dry method move membrane coat to have good permeability, thereby give clothes with synthetic leather high ventilation and vapor pervious performance.
Claims (2)
1. one kind is utilized chemical blowing pore coating technology to produce the method for clothes with synthetic leather, it is characterized in that:
1) bottom intumescent coating
At first; 30% soft solvent borne polyurethane by mass fraction with 50～80 parts of solid contents; 50～80 parts of MEKs (MEK), 2～6 parts of blowing agent Celogen Azs, 0.5～1 part of calcium stearate and 3～5 parts of higher alcohols mix to stir evenly processes bottom intumescent coating slurry;
Then, utilize the method for roller coat that bottom intumescent coating slurry is coated on use for synthetic leather non-weaving cloth front, amounts applied is 160g～280g/m
2, it is dry under 60～80 ℃ condition to get into drying tunnel then, utilizes rotary ironing machine under 140～180 ℃ condition, to press foaming at last, forms the bottom intumescent coating on use for synthetic leather non-weaving cloth surface;
2) dry method is moved membrane coat
At first, by mass fraction with 50～80 parts of solid contents be 30% in rigid solvent borne polyurethane, 60～100 parts of MEKs (MEK), 30～50 parts of toluene and 3～5 parts of higher alcohols mix to stir evenly to be processed dry method and moves membrane coat coating;
Secondly, press mass fraction, is 30% solvent borne polyurethane adhesive with 60～90 parts of solid contents, 60～100 parts of MEKs (MEK), and 10～30 parts of DMF and 3～5 parts of higher alcohols mix stirrings and evenly process adhesive layer coating;
At last, utilize the dry process production line in the synthetic leather production process, the blade coating dry method is moved membrane coat coating in the release liners front, and amounts applied is 30g～90g/m
2, it is dry under 100～140 ℃ condition to get into drying tunnel then, and then blade coating adhesive layer coating, and amounts applied is 50g～120g/m
2The clothes that will have the bottom intumescent coating are at last fitted with non-weaving cloth and the release liners that has adhesive coating, get into drying tunnel 140～170 ℃ of dryings, separate after the cooling; Coating on the release liners is transferred to above the back cover intumescent coating, has obtained clothes and has used synthetic leather;
3) water is rubbed pore
With step 2) clothes processed place water to rub machine with synthetic leather to utilize 55～95 ℃ hot water washing 5～10 minutes; Higher alcohols in the flush away polyurethane coating; Between abscess, form passage; Form the cellular polyurethane coating that connects continuously, obtain having ventilative clothes and use synthetic leather with the vapor pervious performance.
2. the chemical blowing pore coating technology of utilizing according to claim 1 is produced the method for clothes with synthetic leather, and it is characterized in that: described higher alcohols adopt the high triacontanol of 8～31 carbon atoms.
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| CN 201110308035 CN102505517B (en) | 2011-10-11 | 2011-10-11 | Method for producing synthetic leather for clothes by chemical foaming pore forming coating technology |
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| CN 201110308035 CN102505517B (en) | 2011-10-11 | 2011-10-11 | Method for producing synthetic leather for clothes by chemical foaming pore forming coating technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110144736A (en) * | 2019-05-30 | 2019-08-20 | 安徽天安新材料有限公司 | A kind of ventilative moisture absorption automotive interior material and its production technology |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638015B (en) * | 2016-09-29 | 2018-12-04 | 中原工学院 | A kind of fire-retardant, anti-dropping, artificial leather of high moisture-inhibiting and preparation method thereof |
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| WO2003004759A1 (en) * | 2001-07-04 | 2003-01-16 | Viktor Achter Gmbh & Co. Kg | Synthetic suede leather and a process for preparing the same |
| CN101003949A (en) * | 2006-01-20 | 2007-07-25 | 长阳实业有限公司 | Synthetic leather, and fabricating method |
| CN101074279A (en) * | 2006-05-21 | 2007-11-21 | 佛山市顺德区大盈化工有限公司 | High-stregnth solvent-type dry polyurethane foaming resin and its production |
| CN101982604A (en) * | 2010-11-01 | 2011-03-02 | 张瑜 | Water-proof air-permeable polyurethane synthetic leather and preparation method thereof |
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| CN1238400A (en) * | 1998-06-04 | 1999-12-15 | 刘名德 | Method for preparing artificial polyurethane leather |
| WO2003004759A1 (en) * | 2001-07-04 | 2003-01-16 | Viktor Achter Gmbh & Co. Kg | Synthetic suede leather and a process for preparing the same |
| CN101003949A (en) * | 2006-01-20 | 2007-07-25 | 长阳实业有限公司 | Synthetic leather, and fabricating method |
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| CN110144736A (en) * | 2019-05-30 | 2019-08-20 | 安徽天安新材料有限公司 | A kind of ventilative moisture absorption automotive interior material and its production technology |
| CN110144736B (en) * | 2019-05-30 | 2022-07-08 | 安徽天安新材料有限公司 | Breathable and moisture-absorbing automobile interior material and production process thereof |
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| CN102505517B (en) | 2013-06-19 |
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