CN102425070A - Superfine fiber synthetic leather and preparation method thereof - Google Patents
Superfine fiber synthetic leather and preparation method thereof Download PDFInfo
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- CN102425070A CN102425070A CN2011103117070A CN201110311707A CN102425070A CN 102425070 A CN102425070 A CN 102425070A CN 2011103117070 A CN2011103117070 A CN 2011103117070A CN 201110311707 A CN201110311707 A CN 201110311707A CN 102425070 A CN102425070 A CN 102425070A
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Abstract
The invention relates to superfine fiber synthetic leather and a preparation method thereof, and belongs to the technical field of synthetic leather. The superfine fiber synthetic leather consists of a superfine fiber synthetic leather base fabric, a foamed bottom sealing filling layer, a coating top layer, a coating bonding layer and a surface treatment layer, wherein the foamed bottom sealing filling layer comprises the following components in part by weight: 10 to 30 parts of water-borne comprehensive resin, 30 to 40 parts of water-borne foamed resin and 1 to 5 parts of waterproof agent; the coating top layer comprises the following components in part by weight: 70 to 90 parts of water-borne polyurethane, 3 to 10 parts of water-borne color paste, 1 to 5 parts of flatting agent and 1 to 5 parts of handfeel agent; the coating bonding layer comprises the following components in part by weight: 70 to 90 parts of water-borne polyurethane bonding agent, 3 to 10 parts of water-borne color paste and 1 to 5 parts of flatting agent; and the surface treatment layer comprises the following components in part by weight: 1 to 5 parts of waterproof agent and 1 to 5 parts of handfeel agent. The superfine fiber synthetic leather has good properties of scratch resistance, pollution resistance and water resistance, and has wide application prospect; and by adoption of the superfine fiber synthetic leather, clean production can be realized.
Description
Technical field
The present invention relates to technical field of synthetic leather, relate in particular to a kind of superfine fiber chemical leather and preparation method thereof.
Background technology
Superfine fibre is the fiber of current fiber art emphasis research and development, also is the important development direction of following fiber.With the not weaving fabric of superfine fiber is reinforcing material, and through the superfine fiber chemical leather that obtains of dipping polyurethane, all near natural leather, but sanitation performance is relatively poor at aspects such as appearance tactile impression and comfortablenesses, and the anti-scarce capacity of swiping is difficult to satisfy the demand of outdoor use.Aspect production, current superfine fiber chemical leather is to adopt solvent type resin to produce basically, and environmental pollution is big.
Summary of the invention
For solving the problem that exists in the prior art, the present invention provides a kind of superfine fiber chemical leather and preparation method thereof.
The present invention at first provides a kind of superfine fiber chemical leather, is made up of superfine fiber chemical leather base cloth, foaming back cover packed layer, coating top layer, adhesion of coatings layer and surface-treated layer; Said foaming back cover packed layer comprises following component and parts by weight thereof: 10 ~ 30 parts of water-based synthesis resins, 1 ~ 5 part of 30 ~ 40 parts of aqueous foaming resins and waterproofing agent; Said coating top layer comprises following component and parts by weight thereof: 70 ~ 90 parts of aqueous polyurethanes, 3 ~ 10 parts of aqueous color pastes, 1 ~ 5 part of 1 ~ 5 part of levelling agent and hand feeling agent; Said adhesion of coatings layer comprises following component and parts by weight thereof: 70 ~ 90 parts of aqueous polyurethane adhesives, 1 ~ 5 part of 3 ~ 10 parts of aqueous color pastes and levelling agent; Said surface-treated layer comprises following component and parts by weight thereof: 1 ~ 5 part of 1 ~ 5 part of waterproofing agent and hand feeling agent.
Accordingly, the present invention also provides a kind of superfine fiber chemical leather preparation method, comprises the steps:
A) adopt physical pendulum continous mode spray-painting production line; The spray coating foaming back cover packed layer coating on common superfine fiber chemical leather base cloth surface; This coating is by the water-based synthesis resin of 10 ~ 30 parts by weight; The aqueous foaming resin of 30 ~ 40 parts by weight and the waterproofing agent of 1 ~ 5 parts by weight mix and get, and amounts applied is 50 ~ 120 g/m
2, get into drying tunnel then, dry under 70 ~ 90 ℃ of conditions, use ironing machine under 100 ~ 130 ℃ of conditions, to press foaming, form superfine fiber chemical leather surface blister back cover packed layer;
B) adopt dry process production line; Blade coating top layer coating on release liners, this coating is by the aqueous polyurethane of 70 ~ 90 parts by weight, the aqueous color paste of 3 ~ 10 parts by weight; The hand feeling agent of the levelling agent of 1 ~ 5 parts by weight and 1 ~ 5 parts by weight mixes and gets, and amounts applied is 20 ~ 60 g/m
2, get into drying tunnel, dry under 100 ~ 130 ℃ of conditions, on said release liners, form the coating top layer;
C) blade coating adhesive layer coating on said coating top layer, this coating is by the aqueous polyurethane adhesive of 70 ~ 90 parts by weight, and the levelling agent of the aqueous color paste of 3 ~ 10 parts by weight and 1 ~ 5 parts by weight mixes and gets, and amounts applied is 20 ~ 60 g/m
2, form the adhesion of coatings layer;
D) said foaming back cover packed layer and said release liners are closed through the adhesion of coatings laminating; Get into drying tunnel then; Dry under 100 ~ 130 ℃ of conditions, peel off said release liners after the cooling, said adhesion of coatings layer and said coating top layer are transferred to above the foaming back cover packed layer;
E) adopt spray-painting production line, carry out sprayed surface processing layer coating in said coating topsheet surface, this coating is mixed and is got by the waterproofing agent of 1 ~ 5 parts by weight and the hand feeling agent of 1 ~ 5 parts by weight, and amounts applied is 1 ~ 10 g/m
2, get into drying tunnel then, dry under 70 ~ 90 ℃ of conditions, form surface-treated layer.
Adopt technique scheme, superfine fiber chemical leather has the foaming back cover packed layer of waterproof action, and strong adhesion can play good interior waterproof effect; Have the surface-treated layer of anti-scraping, antifouling and waterproof NBC protective performance, have good sanitation performance, can satisfy the demand of outdoor use; The mode of production that adopts spray-painting production line and dry process production line to combine; Improved the quality of production of superfine fiber chemical leather, the coating material that uses in the production process is water-based material, can not produce the environmental pollution of organic solvent; Improve operating personnel's working environment, realized cleaner production.
Because adopt technique scheme, the sanitation performance of superfine fibre chemical leather that has overcome current use is relatively poor, prevent the scraping scarce capacity, be difficult to satisfy the demand of outdoor use, the big shortcoming of environmental pollution in the production process.
As further improvement of the present invention, said foaming back cover packed layer comprises following component and parts by weight composition thereof: 10 ~ 20 parts of water-based synthesis resins, 1 ~ 3 part of 30 ~ 35 parts of aqueous foaming resins and waterproofing agent; Said coating top layer comprises following component and parts by weight thereof: 70 ~ 80 parts of aqueous polyurethanes, 3 ~ 7 parts of aqueous color pastes, 1 ~ 3 part of 1 ~ 3 part of levelling agent and hand feeling agent; Said adhesion of coatings layer comprises following component and parts by weight thereof: 70 ~ 80 parts of aqueous polyurethane adhesives, 1 ~ 3 part of 3 ~ 7 parts of aqueous color pastes and levelling agent; Said surface-treated layer comprises following component and parts by weight thereof: 1 ~ 3 part of 1 ~ 3 part of waterproofing agent and hand feeling agent.
As further improvement of the present invention, said waterproofing agent adopts fluororesin.
As further improvement of the present invention, said levelling agent adopts the polyacrylic levelling agent.
The present invention also provides said superfine fiber chemical leather preparing case and bag with the purposes in the synthetic leather.
The present invention also provides said superfine fiber chemical leather preparing footwear with the purposes in the synthetic leather.
Compared with prior art, the invention has the beneficial effects as follows: superfine fiber chemical leather has the foaming back cover packed layer of waterproof action, and strong adhesion can play good interior waterproof effect; Have the surface-treated layer of anti-scraping, antifouling and waterproof NBC protective performance, have good sanitation performance, can satisfy the demand of outdoor use; The mode of production that adopts spray-painting production line and dry process production line to combine has improved the quality of production of superfine fiber chemical leather, and the coating material that uses in the production process is water-based material, can not produce the environmental pollution of organic solvent, has realized cleaner production; Good hand touch can be used for the preparation with synthetic leather etc. of case and bag and footwear, and application prospect is extensive.
The specific embodiment
Through embodiment the present invention is explained further details below.
embodiment one superfine fiber chemical leather.
The superfine fiber chemical leather that the embodiment of the invention provides is made up of superfine fiber chemical leather base cloth, foaming back cover packed layer, coating top layer, adhesion of coatings layer and surface-treated layer; Said foaming back cover packed layer comprises following component and parts by weight thereof: 10 parts of water-based synthesis resins, 1 part of 30 parts of aqueous foaming resins and waterproofing agent; Said coating top layer comprises following component and parts by weight thereof: 70 parts of aqueous polyurethanes, 3 parts of aqueous color pastes, 1 part of 1 part of levelling agent and hand feeling agent; Said adhesion of coatings layer comprises following component and parts by weight thereof: 70 parts of aqueous polyurethane adhesives, 1 part of 3 parts of aqueous color pastes and levelling agent; Said surface-treated layer comprises following component and parts by weight thereof: 3 parts of 1 part of waterproofing agent and hand feeling agents.
Waterproofing agent is preferably fluororesin, and levelling agent is preferably the polyacrylic levelling agent.
The superfine fiber chemical leather that the embodiment of the invention provides can play good interior waterproof effect, anti-scraping, antifouling and the waterproof NBC protective performance is good, and good hand touch can be used for the preparation with synthetic leather etc. of case and bag and footwear.
embodiment two superfine fiber chemical leathers.
The superfine fiber chemical leather that the embodiment of the invention provides is made up of superfine fiber chemical leather base cloth, foaming back cover packed layer, coating top layer, adhesion of coatings layer and surface-treated layer; Said foaming back cover packed layer comprises following component and parts by weight thereof: 20 parts of water-based synthesis resins, 3 parts of 35 parts of aqueous foaming resins and waterproofing agents; Said coating top layer comprises following component and parts by weight thereof: 80 parts of aqueous polyurethanes, 7 parts of aqueous color pastes, 3 parts of 3 parts of levelling agents and hand feeling agents; Said adhesion of coatings layer comprises following component and parts by weight thereof: 80 parts of aqueous polyurethane adhesives, 3 parts of 7 parts of aqueous color pastes and levelling agents; Said surface-treated layer comprises following component and parts by weight thereof: 3 parts of 3 parts of waterproofing agents and hand feeling agents.
Waterproofing agent is preferably fluororesin, and levelling agent is preferably the polyacrylic levelling agent.
The superfine fiber chemical leather that the embodiment of the invention provides can play good interior waterproof effect, anti-scraping, antifouling and the waterproof NBC protective performance is good, and good hand touch can be used for the preparation with synthetic leather etc. of case and bag and footwear.
The preparation method of
embodiment three superfine fiber chemical leathers.
The preparation method of the superfine fiber chemical leather that the embodiment of the invention provides comprises the steps:
A) 10 parts of water-based synthesis resins of weighing by weight, 30 parts of aqueous foaming resins and 1 part of waterproofing agent mix, and back cover packed layer coating obtains foaming; Adopt physical pendulum continous mode spray-painting production line, the spray coating foaming back cover packed layer coating on common superfine fiber chemical leather base cloth surface, amounts applied is 50 ~ 120 g/m
2, get into drying tunnel then, dry under 70 ℃ ~ 90 ℃ conditions, use ironing machine under 100 ℃ ~ 130 ℃ conditions, to press foaming, form superfine fiber chemical leather surface blister back cover packed layer;
B) 70 parts of aqueous polyurethanes of weighing by weight, 3 parts of aqueous color pastes, 1 part of levelling agent and 1 part of hand feeling agent mix, and obtain top layer coating; Adopt dry process production line, blade coating top layer coating on release liners, amounts applied is 20 ~ 60 g/m
2, get into drying tunnel, dry under 100 ~ 130 ℃ of conditions, on said release liners, form the coating top layer;
C) 70 parts of aqueous polyurethane adhesives of weighing by weight, 3 parts of aqueous color pastes and 1 part of levelling agent mix, and obtain adhesive layer coating; Blade coating adhesive layer coating on said coating top layer forms the adhesion of coatings layer;
D) said foaming back cover packed layer and said release liners are closed through the adhesion of coatings laminating; Get into drying tunnel then; Dry under 100 ~ 130 ℃ of conditions, peel off said release liners after the cooling, said adhesion of coatings layer and said coating top layer are transferred to above the foaming back cover packed layer;
E) 1 part of waterproofing agent of weighing and 3 parts of hand feeling agents by weight mix, and obtain the surface treatment coating; Adopt spray-painting production line, carry out sprayed surface processing layer coating, form surface-treated layer in said coating topsheet surface.
Waterproofing agent is preferably fluororesin, and levelling agent is preferably the polyacrylic levelling agent.
The preparation method of
embodiment four superfine fiber chemical leathers.
The preparation method of the superfine fiber chemical leather that the embodiment of the invention provides comprises the steps:
A) 20 parts of water-based synthesis resins of weighing by weight, 35 parts of aqueous foaming resins and 3 parts of waterproofing agents mix, and back cover packed layer coating obtains foaming; Adopt physical pendulum continous mode spray-painting production line, the spray coating foaming back cover packed layer coating on common superfine fiber chemical leather base cloth surface, amounts applied is 50 ~ 120 g/m
2, get into drying tunnel then, dry under 70 ℃ ~ 90 ℃ conditions, use ironing machine under 100 ℃ ~ 130 ℃ conditions, to press foaming, form superfine fiber chemical leather surface blister back cover packed layer;
B) 80 parts of aqueous polyurethanes of weighing by weight, 7 parts of aqueous color pastes, 3 parts of levelling agents and 3 parts of hand feeling agents mix, and obtain top layer coating; Adopt dry process production line, blade coating top layer coating on release liners, amounts applied is 20 ~ 60 g/m
2, get into drying tunnel, dry under 100 ~ 130 ℃ of conditions, on said release liners, form the coating top layer;
C) 80 parts of aqueous polyurethane adhesives of weighing by weight, 7 parts of aqueous color pastes and 3 parts of levelling agents mix, and obtain adhesive layer coating; Blade coating adhesive layer coating on said coating top layer forms the adhesion of coatings layer;
D) said foaming back cover packed layer and said release liners are closed through the adhesion of coatings laminating; Get into drying tunnel then; Dry under 100 ~ 130 ℃ of conditions, peel off said release liners after the cooling, said adhesion of coatings layer and said coating top layer are transferred to above the foaming back cover packed layer;
E) 3 parts of waterproofing agents of weighing and 3 parts of hand feeling agents by weight mix, and obtain the surface treatment coating; Adopt spray-painting production line, carry out sprayed surface processing layer coating, form surface-treated layer in said coating topsheet surface.
Waterproofing agent is preferably fluororesin, and levelling agent is preferably the polyacrylic levelling agent.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (9)
1. a superfine fiber chemical leather is characterized in that: be made up of superfine fiber chemical leather base cloth, foaming back cover packed layer, coating top layer, adhesion of coatings layer and surface-treated layer;
Said foaming back cover packed layer comprises following component and parts by weight thereof: 10 ~ 30 parts of water-based synthesis resins, 1 ~ 5 part of 30 ~ 40 parts of aqueous foaming resins and waterproofing agent;
Said coating top layer comprises following component and parts by weight thereof: 70 ~ 90 parts of aqueous polyurethanes, 3 ~ 10 parts of aqueous color pastes, 1 ~ 5 part of 1 ~ 5 part of levelling agent and hand feeling agent;
Said adhesion of coatings layer comprises following component and parts by weight thereof: 70 ~ 90 parts of aqueous polyurethane adhesives, 1 ~ 5 part of 3 ~ 10 parts of aqueous color pastes and levelling agent;
Said surface-treated layer comprises following component and parts by weight thereof: 1 ~ 5 part of 1 ~ 5 part of waterproofing agent and hand feeling agent.
2. superfine fiber chemical leather according to claim 1 is characterized in that: said foaming back cover packed layer comprises following component and parts by weight thereof: 10 ~ 20 parts of water-based synthesis resins, 1 ~ 3 part of 30 ~ 35 parts of aqueous foaming resins and waterproofing agent; Said coating top layer comprises following component and parts by weight thereof: 70 ~ 80 parts of aqueous polyurethanes, 3 ~ 7 parts of aqueous color pastes, 1 ~ 3 part of 1 ~ 3 part of levelling agent and hand feeling agent; Said adhesion of coatings layer comprises following component and parts by weight thereof: 70 ~ 80 parts of aqueous polyurethane adhesives, 1 ~ 3 part of 3 ~ 7 parts of aqueous color pastes and levelling agent; Said surface-treated layer comprises following component and parts by weight thereof: 1 ~ 3 part of 1 ~ 3 part of waterproofing agent and hand feeling agent.
3. superfine fiber chemical leather according to claim 1 and 2 is characterized in that: said waterproofing agent adopts fluororesin.
4. superfine fiber chemical leather according to claim 1 and 2 is characterized in that: said levelling agent adopts the polyacrylic levelling agent.
5. superfine fiber chemical leather according to claim 1 is preparing case and bag with the purposes in the synthetic leather.
6. superfine fiber chemical leather according to claim 1 is preparing footwear with the purposes in the synthetic leather.
7. a method for preparing the described superfine fiber chemical leather of claim 1 is characterized in that: comprise the steps:
Adopt physical pendulum continous mode spray-painting production line; The spray coating foaming back cover packed layer coating on common superfine fiber chemical leather base cloth surface; This coating is by the water-based synthesis resin of 10 ~ 30 parts by weight; The aqueous foaming resin of 30 ~ 40 parts by weight and the waterproofing agent of 1 ~ 5 parts by weight mix and get, and amounts applied is 50 ~ 120 g/m
2, get into drying tunnel then, dry under 70 ~ 90 ℃ of conditions, use ironing machine under 100 ~ 130 ℃ of conditions, to press foaming, form superfine fiber chemical leather surface blister back cover packed layer;
Adopt dry process production line; Blade coating top layer coating on release liners, this coating is by the aqueous polyurethane of 70 ~ 90 parts by weight, the aqueous color paste of 3 ~ 10 parts by weight; The hand feeling agent of the levelling agent of 1 ~ 5 parts by weight and 1 ~ 5 parts by weight mixes and gets, and amounts applied is 20 ~ 60 g/m
2, get into drying tunnel, dry under 100 ~ 130 ℃ of conditions, on said release liners, form the coating top layer;
Blade coating adhesive layer coating on said coating top layer, this coating are by the aqueous polyurethane adhesive of 70 ~ 90 parts by weight, and the levelling agent of the aqueous color paste of 3 ~ 10 parts by weight and 1 ~ 5 parts by weight mixes and gets, and amounts applied is 20 ~ 60 g/m
2, form the adhesion of coatings layer;
Said foaming back cover packed layer and said release liners are closed through the adhesion of coatings laminating; Get into drying tunnel then; Dry under 100 ~ 130 ℃ of conditions, peel off said release liners after the cooling, said adhesion of coatings layer and said coating top layer are transferred to above the foaming back cover packed layer;
Adopt spray-painting production line, carry out sprayed surface processing layer coating in said coating topsheet surface, this coating is mixed and is got by the waterproofing agent of 1 ~ 5 parts by weight and the hand feeling agent of 1 ~ 5 parts by weight, and amounts applied is 1 ~ 10 g/m
2, get into drying tunnel then, dry under 70 ~ 90 ℃ of conditions, form surface-treated layer.
8. the method for preparing superfine fiber chemical leather according to claim 7 is characterized in that: said waterproofing agent adopts fluororesin.
9. the method for preparing superfine fiber chemical leather according to claim 7 is characterized in that: said levelling agent adopts the polyacrylic levelling agent.
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| CN 201110311707 CN102425070B (en) | 2011-10-14 | 2011-10-14 | Superfine fiber synthetic leather and preparation method thereof |
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| CN102747611A (en) * | 2012-06-21 | 2012-10-24 | 福建宝利特纺织涂层有限公司 | Preparation method of environment-friendly case coating fabric |
| CN102936851A (en) * | 2012-11-07 | 2013-02-20 | 上海华峰超纤材料股份有限公司 | Infusorial earth environment-friendly interior wall decoration polyurethane synthetic leather and production method thereof |
| CN103612452A (en) * | 2013-11-22 | 2014-03-05 | 袁伟 | Environment-friendly multifunctional water-based coating |
| CN104179029A (en) * | 2014-07-02 | 2014-12-03 | 合肥冠怡涂层织物有限公司 | High-solid-content foaming artificial leather and preparation method thereof |
| CN104404785A (en) * | 2014-12-01 | 2015-03-11 | 南通亿华塑胶有限公司 | Process for producing color-changed leather |
| CN104562725A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | High-wear-resistance water-based PUD floor leather and preparation method thereof |
| CN106739413A (en) * | 2016-11-29 | 2017-05-31 | 刘明阳 | A kind of Novel gluing formula material and its manufacture craft |
| CN109162111A (en) * | 2018-09-14 | 2019-01-08 | 安徽省怀宁县山森制衣有限公司 | A kind of processing method of flannelette fur clothing material |
| CN109252387A (en) * | 2018-08-01 | 2019-01-22 | 四川大学 | A kind of leather/synthetic leather and preparation method thereof based on selfreparing aqueous polyurethane |
| CN110578257A (en) * | 2018-06-08 | 2019-12-17 | 上海达明精世化工有限公司 | Microfiber leather and preparation process thereof |
| WO2020097839A1 (en) * | 2018-11-15 | 2020-05-22 | Dow Global Technologies Llc | Synthetic leather article and method for preparing the same |
| CN109594352B (en) * | 2018-12-07 | 2021-06-22 | 福建华普树脂有限公司 | Microfiber nubuck and preparation method thereof |
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| CN102747611A (en) * | 2012-06-21 | 2012-10-24 | 福建宝利特纺织涂层有限公司 | Preparation method of environment-friendly case coating fabric |
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| CN102936851A (en) * | 2012-11-07 | 2013-02-20 | 上海华峰超纤材料股份有限公司 | Infusorial earth environment-friendly interior wall decoration polyurethane synthetic leather and production method thereof |
| CN104562725A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | High-wear-resistance water-based PUD floor leather and preparation method thereof |
| CN103612452A (en) * | 2013-11-22 | 2014-03-05 | 袁伟 | Environment-friendly multifunctional water-based coating |
| CN103612452B (en) * | 2013-11-22 | 2016-03-02 | 袁伟 | A kind of aqueous, environmental protective multi-functional coatings |
| CN104179029A (en) * | 2014-07-02 | 2014-12-03 | 合肥冠怡涂层织物有限公司 | High-solid-content foaming artificial leather and preparation method thereof |
| CN104404785A (en) * | 2014-12-01 | 2015-03-11 | 南通亿华塑胶有限公司 | Process for producing color-changed leather |
| CN106739413A (en) * | 2016-11-29 | 2017-05-31 | 刘明阳 | A kind of Novel gluing formula material and its manufacture craft |
| CN110578257A (en) * | 2018-06-08 | 2019-12-17 | 上海达明精世化工有限公司 | Microfiber leather and preparation process thereof |
| CN109252387A (en) * | 2018-08-01 | 2019-01-22 | 四川大学 | A kind of leather/synthetic leather and preparation method thereof based on selfreparing aqueous polyurethane |
| CN109252387B (en) * | 2018-08-01 | 2021-03-30 | 四川大学 | Leather/synthetic leather based on self-repairing waterborne polyurethane and preparation method thereof |
| CN109162111A (en) * | 2018-09-14 | 2019-01-08 | 安徽省怀宁县山森制衣有限公司 | A kind of processing method of flannelette fur clothing material |
| WO2020097839A1 (en) * | 2018-11-15 | 2020-05-22 | Dow Global Technologies Llc | Synthetic leather article and method for preparing the same |
| CN113039322A (en) * | 2018-11-15 | 2021-06-25 | 陶氏环球技术有限责任公司 | Synthetic leather product and preparation method thereof |
| JP2022517489A (en) * | 2018-11-15 | 2022-03-09 | ダウ グローバル テクノロジーズ エルエルシー | Synthetic leather products and their preparation methods |
| JP7282172B2 (en) | 2018-11-15 | 2023-05-26 | ダウ グローバル テクノロジーズ エルエルシー | Synthetic leather product and its preparation method |
| CN113039322B (en) * | 2018-11-15 | 2024-01-19 | 陶氏环球技术有限责任公司 | Synthetic leather product and preparation method thereof |
| CN109594352B (en) * | 2018-12-07 | 2021-06-22 | 福建华普树脂有限公司 | Microfiber nubuck and preparation method thereof |
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