CN102965967A - Production method of superfine fiber synthetic leather - Google Patents
Production method of superfine fiber synthetic leather Download PDFInfo
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- CN102965967A CN102965967A CN2012105435513A CN201210543551A CN102965967A CN 102965967 A CN102965967 A CN 102965967A CN 2012105435513 A CN2012105435513 A CN 2012105435513A CN 201210543551 A CN201210543551 A CN 201210543551A CN 102965967 A CN102965967 A CN 102965967A
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Abstract
The invention provides a production method of superfine fiber synthetic leather. The production method comprises the following steps: A, preparing superfine fiber non-woven fabrics which are not greater than 200g/m<2> in weight by seal-island fibers with polyethylene serving as the sea component; B, overlapping the superfine fiber nonwoven fabrics into a plurality of layers at 90 to 150 DEG C to realize compounding, so as to obtain a multi-layer compounding and sizing fabric; C, dipping the multi-layer compounding and sizing fabric by polyurethane, and extracting by toluene, so as to obtain the base material of the superfine fiber synthetic leather; and D, separating and layering the base material of the superfine fiber synthetic leather, thus obtaining the superfine fiber synthetic leather. According to the production method of the superfine fiber synthetic leather, the splitting method in the conventional technology for producing thin products can be avoided implementing, therefore, the obtained superfine fiber synthetic leather has no mechanical damage; and the stretching strength, the tearing strength and the peeling strength of the produced superfine fiber synthetic leather are obviously improved.
Description
Technical field
The present invention relates to the synthetic leather field, in particular to a kind of production method of superfine fiber chemical leather.
Background technology
Superfine fiber chemical leather has a wide range of applications in fields such as clothes, dress ornament, leatherwares.In the prior art, the production of superfine fiber chemical leather normally first with superfine fibre through weaving or nonwovens process obtains base cloth, then through dipping polyurethane, toluene extraction, after the operation such as ornamenting, obtain superfine fiber chemical leather.
Disclosed superfine fiber chemical leather manufacture method comprises among the Chinese patent CN101457482B " a kind of superfine fibre woven fibric chemical leather and manufacture method thereof ": (1) with weight ratio 20～60%:80～40% mixing, makes sea-island composite fiber long filament or the staple fibre at 0.1～5 dawn with " sea " composition and two kinds of high molecular polymers of " island " composition; (2) yarn that the fabric of island-in-sea type staple fibre is spun into or superfine fibre long filament through warping, sizing, woven, are made into base cloth; (3) be behind 10～30% the primary colors or colored polyurethane impregnation process with base cloth concentration, solidify, dry and the surface is scraped driedly through coagulating agent again, make the synthetic leather semi-finished product; (4) the synthetic leather semi-finished product are processed with 80～90 ℃ hot toluene, dissolved " sea " composition in the sea-island composite fiber, after washing, drying, making filament number was 0.01～0.0005 dawn, and the superfine fibre woven fibric chemical leather in space is arranged between fiber again; (5) superfine fibre woven fibric chemical leather is required to carry out rear ornamenting according to difference, make product.
Disclosed superfine fiber chemical leather manufacture method comprises among the Chinese patent CN102071495A " island ultrafine fiber, its manufacture method and the process of utilizing its preparation synthetic leather ": (1) is cotton through shredding with island ultrafine fiber, adopt carding machine to be carded to the single layer fibre net, form composite fiber web through cross lapping machine; Fiber web by platform acupuncture, forms needle punched non-woven fabrics through some needing machines; Needle punched non-woven fabrics after overfire air heat treatment, through the roll-in of calendering roller, forms needle fabric again; (2) with not weaving fabric of superfine fiber through polyurethane solutions dipping, behind the dipping at the DMF(dimethyl formamide) fully solidify in the aqueous solution, then wash with water, form synthetic leather dipping base material; The dipping base material soaks in toluene solution repeatedly, the pressure roller squeezing is processed to extract the island ultrafine fiber sea component, makes it to realize the fine of fiber; Base material enters azeotropic distillation in the water, removes residual toluene, then in air oven, dry, and can be again through ornamenting operation later, obtain the superfine fiber chemical leather product.
Yet there is a technical difficult problem in superfine fiber chemical leather in the production link of slim (below the 0.8mm) product, namely owing to generally adopt the toluene extraction process, because producing tension force greatly so that the slim product contracting width of cloth is serious, can not satisfy the final market demand.And the solution of prior art all is to obtain slim product by the method for cuing open split, but the intensity that its maximum defective is finished product is suffered great injury, can not satisfy the requirement of subsequent machining technology, for example the sewing of ready-made clothes and the technological requirement of clothing.
Summary of the invention
The invention provides a kind of production method of superfine fiber chemical leather, to solve the slim product of superfine fiber chemical leather in the prior art by the technical problem of the product strength deficiency cuing open the split method and produce.
According to an aspect of the present invention, provide a kind of production method of superfine fiber chemical leather, may further comprise the steps: A, be that poly sea-island composite fiber is made grammes per square metre≤200g/m with sea component
2Not weaving fabric of superfine fiber; B, not weaving fabric of superfine fiber is carried out multiple-layer overlapped under 90～150 ℃ compound, makes the MULTILAYER COMPOSITE setting cloth; C, with the MULTILAYER COMPOSITE setting cloth through dipping polyurethane and toluene extraction process, make the superfine fiber chemical leather base material; D, the superfine fiber chemical leather base material is peeled off layering, obtain superfine fiber chemical leather.
Further, step B comprises: with the overlapping placement of multilayer not weaving fabric of superfine fiber, be conveyed into the preshrunk that relaxes in the baking oven under 90～150 ℃, through the pressure roller compression of misunderstanding each other, make the MULTILAYER COMPOSITE setting cloth again.
Further, baking oven comprises a plurality of bringing-up sections that temperature arranges from low to high.
Further, the sea component of sea-island composite fiber is low density polyethylene (LDPE).
Further, the island component of sea-island composite fiber is polyamide.
Further, the island component of sea-island composite fiber is polyester.
Further, the method that not weaving fabric of superfine fiber adopts acupuncture to tangle is made, and grammes per square metre is 120～200g/m
2The MULTILAYER COMPOSITE setting cloth is undertaken overlapping by 2～3 layer superfine fibre non-weaving cloths and makes.
Further, not weaving fabric of superfine fiber adopts Hydroentangled method to make, and grammes per square metre is 80～120g/m
2The MULTILAYER COMPOSITE setting cloth is undertaken overlapping by 4～5 layer superfine fibre non-weaving cloths and makes.
Use the superfine fiber chemical leather production method of technical solution of the present invention, by being that poly sea-island composite fiber is made grammes per square metre≤200g/m with sea component
2Low grammes per square metre not weaving fabric of superfine fiber, it is compound not weaving fabric of superfine fiber to be carried out in advance multiple-layer overlapped again, make the MULTILAYER COMPOSITE setting cloth, and further process through dipping polyurethane and toluene extraction, make after the superfine fiber chemical leather base material, peel off again layering, obtain superfine fiber chemical leather.Owing to avoided producing slim product with the split method of cuing open of traditional handicraft, thereby the superfine fiber chemical leather machinery-free that obtains injures, its stretching, tear, peel strength all is significantly improved.
The specific embodiment
Below in conjunction with the embodiment of the invention, technical scheme of the present invention is described in detail, but following embodiment understands the present invention, and can not limit the present invention, embodiment and the feature among the embodiment among the present invention can make up mutually, and the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
In a kind of exemplary embodiment of the present invention, the production method of superfine fiber chemical leather may further comprise the steps: A, be that poly sea-island composite fiber is made grammes per square metre≤200g/m with sea component
2Not weaving fabric of superfine fiber; B, not weaving fabric of superfine fiber is carried out multiple-layer overlapped under 90～150 ℃ compound, makes the MULTILAYER COMPOSITE setting cloth; C, with the MULTILAYER COMPOSITE setting cloth through dipping polyurethane and toluene extraction process, make the superfine fiber chemical leather base material; D, the superfine fiber chemical leather base material is peeled off layering, obtain superfine fiber chemical leather.By being that poly sea-island composite fiber is made grammes per square metre≤200g/m with sea component
2Low grammes per square metre not weaving fabric of superfine fiber, it is compound not weaving fabric of superfine fiber to be carried out in advance multiple-layer overlapped again, make the MULTILAYER COMPOSITE setting cloth, and further process through dipping polyurethane and toluene extraction, filled polyurethane in the fibre gap of MULTILAYER COMPOSITE setting cloth, then pull out sea component polyethylene in the sea-island composite fiber with toluene solvant, make after the superfine fiber chemical leather base material, peel off again layering, obtain superfine fiber chemical leather, wherein, because the polyethylene as the sea-island composite fiber sea component has adhesive under 90～150 ℃ the multiple-layer overlapped composite heating temperature of step B, can make the not weaving fabric of superfine fiber surface composition of multilayer melt mutually rear combination, form firmly MULTILAYER COMPOSITE setting cloth of combination, thereby further make the superfine fiber chemical leather base material; In the toluene extraction processing procedure of step C, the sea component polyethylene is pulled out, merge also corresponding elimination on the surface that the multiple-layer overlapped compound tense forms between the adjacent layer in the synthetic leather base material, thereby can be stripped from comparalive ease the superfine fiber chemical leather that separates into multilayer in the delaminating process peeling off of step D, can not bring mechanical wounding to final products simultaneously.Above-mentioned slim (in the production process of the superfine fiber chemical leather of thickness≤0.8mm), avoided using the production method of cuing open split of traditional handicraft, the superfine fiber chemical leather machinery-free injury of acquisition, its stretching, tear, peel strength all is significantly improved.
In a kind of preferred embodiment of the present invention, the step B of preparation MULTILAYER COMPOSITE setting cloth comprises: with the overlapping placement of the not weaving fabric of superfine fiber of the above-mentioned low grammes per square metre of multilayer, be conveyed into the preshrunk that under 90～150 ℃ temperature, relaxes in the baking oven, under 90～150 ℃ heating condition, the surperficial sea component polyethylene of not weaving fabric of superfine fiber is in the molten state with adhesive, can melt mutually each other rear combination, again through the pressure roller compression of misunderstanding each other, thereby make the MULTILAYER COMPOSITE setting cloth, can reach enough adhesions between the multilayer not weaving fabric of superfine fiber wherein, satisfy the requirement of the synthetic leather base material manufacturing technique among the step C.
In further preferred embodiment of the present invention, the baking oven of the lax preshrunk of the carrying out among the above-mentioned steps B comprises a plurality of bringing-up sections that temperature arranges from low to high, the difference of temperature can be set to 2～10 ℃ between each adjacent bringing-up section, thereby can carry out to the lax pre-compression process of the compound not weaving fabric of superfine fiber of multiple-layer overlapped more accurate temperature control, realize better technological effect.
Sea-island composite fiber in the above-mentioned embodiment, its maximum characteristics are that its filament number is far smaller than general fibre, usually can reach the 0.1dtex(dtex) below, the thinnest 0.0001dtex that reaches, because the filament strength of every sea-island composite fiber is suitable with the filament strength of every general fibre, therefore the slim superfine fiber chemical leather product that is made through said method by above-mentioned sea-island composite fiber is under less thickness, for example≤thickness of 0.8mm under, just can have good mechanical performance.
Preferably, the sea component as the sea-island composite fiber of raw material of the present invention is low density polyethylene (LDPE) (LDPE).Low density polyethylene (LDPE) (LDPE) has better adhesive under 90～150 ℃ multiple-layer overlapped composite heating temperature, be conducive to form the surface and merge between the multilayer not weaving fabric of superfine fiber, improves the processing characteristics of the MULTILAYER COMPOSITE setting cloth that makes; And, in follow-up toluene extraction process, also be easier to detach out, be conducive to synthetic leather base material peeled off and be layered as superfine fiber chemical leather.
Preferably, be polyamide (PA) as the island component of the sea-island composite fiber of raw material of the present invention, polyamide fiber has preferably ABRASION RESISTANCE and pliability; Perhaps, the island component is polyester, and polyester fiber has preferably crease resistance and resilience.
In a kind of concrete embodiment of the present invention, the method that not weaving fabric of superfine fiber adopts acupuncture to tangle is made, the fiber web of the not weaving fabric of superfine fiber that the method that acupuncture is tangled obtains is more complete, and mechanical property is better, and usually can make grammes per square metre is 120～200g/m
2Not weaving fabric of superfine fiber; Under above-mentioned process conditions, the multiple-layer overlapped compound tense of step B, carry out the tangle not weaving fabric of superfine fiber that obtains of 2～3 layers of above-mentioned acupuncture overlapping, the gross thickness of prepared like this MULTILAYER COMPOSITE setting cloth is proper, and the technological effect in the synthetic leather base material manufacture process of step C is better.The technique that above-mentioned acupuncture is tangled does not repeat them here at comparative maturity in the art.
In the another kind of concrete embodiment of the present invention, not weaving fabric of superfine fiber adopts Hydroentangled method to make, and Hydroentangledly can obtain the lower not weaving fabric of superfine fiber of grammes per square metre, for example can obtain 80～120g/m
2Not weaving fabric of superfine fiber; Under above-mentioned process conditions, the multiple-layer overlapped compound tense of step B, 4～5 layers of above-mentioned Hydroentangled not weaving fabric of superfine fiber that obtains are carried out overlapping, the gross thickness of prepared like this MULTILAYER COMPOSITE setting cloth is proper, and the technological effect in the synthetic leather base material manufacture process of step C is better.Above-mentioned Hydroentangled technique does not repeat them here at yet comparative maturity in the art.
Further specify beneficial effect of the present invention below in conjunction with embodiment.
Embodiment 1
Selecting total fiber number is that the island component of 6dtex is that polyamide, sea component are poly not island ultrafine fiber, use first thick opener to the shredding of the thick section of fiber, again with refined opener to the further meticulous shredding of fiber, then in mixing large storehouse to the further combined balance system of fiber, by carding machine the abundant combing of fiber and one-tenth net are exported, by lapping machine the fiber web reciprocating folding type is become 20 layers of fiber web output again, then by repeated puncture entangled fiber about 6 needing machines, make grammes per square metre 180g/m
2, thickness 1.2mm, needling density 1420 thorn/cm
2Not weaving fabric of superfine fiber.
Two-layer above-mentioned not weaving fabric of superfine fiber is passed through super-feeding device, be tiled on the transmission net eyes of loose setting machine, enter in the 6 joint preshrunk baking ovens of loose setting machine, 6 bringing-up section temperature of baking oven are set as successively: 95 ℃, 105 ℃, 110 ℃, 120 ℃, 128 ℃, 130 ℃.The superfine fiber fabric that goes out baking oven cools off rolling after two pairs of smooth rolls of misunderstanding each other compress, be made into grammes per square metre 410g/m
2, thickness 1.62mm the two-layer compound setting cloth.
Above-mentioned two-layer compound setting cloth through dipping polyurethane, toluene extraction, is made average grammes per square metre 460g/m
2, thickness 1.3mm the superfine fiber chemical leather base material.With the oven dry that oils of above-mentioned base material, be separated into two-layer average grammes per square metre 230g/m by stripping machine
2, thickness 0.65mm superfine fiber chemical leather, and can carry out further final finishing technique to it.
Embodiment 2
Selecting total fiber number is that the island component of 6dtex is that polyamide, sea component are poly not island ultrafine fiber, use first thick opener to the shredding of the thick section of fiber, again with refined opener to the further meticulous shredding of fiber, then in mixing large storehouse to the further combined balance system of fiber, by carding machine the abundant combing of fiber and one-tenth net are exported, by lapping machine the fiber web reciprocating folding type is become 16 layers of fiber web output again, then by repeated puncture entangled fiber about 6 needing machines, make grammes per square metre 120g/m
2, thickness 1.0mm, needling density 1420 thorn/cm
2Not weaving fabric of superfine fiber.
Three layers of above-mentioned not weaving fabric of superfine fiber are passed through super-feeding device, be tiled on the transmission net eyes of loose setting machine, enter in the 6 joint preshrunk baking ovens of loose setting machine, 6 bringing-up section temperature of baking oven are set as successively: 115 ℃, 125 ℃, 130 ℃, 140 ℃, 148 ℃, 150 ℃.The superfine fiber fabric that goes out baking oven cools off rolling after two pairs of smooth rolls of misunderstanding each other compress, be made into grammes per square metre 440g/m
2, thickness 1.7mm three layers of composite setting cloth.
Above-mentioned three layers of composite setting cloth through dipping polyurethane, toluene extraction, are made average grammes per square metre 480g/m
2, thickness 1.5mm the superfine fiber chemical leather base material.With the oven dry that oils of above-mentioned base material, be separated into three layers of average grammes per square metre 160g/m by stripping machine
2, thickness 0.5mm superfine fiber chemical leather, and can carry out further final finishing technique to it.
Embodiment 3
Selecting total fiber number is that the island component of 6dtex is that polyester, sea component are poly not island ultrafine fiber, use first thick opener to the shredding of the thick section of fiber, again with refined opener to the further meticulous shredding of fiber, then in mixing large storehouse to the further combined balance system of fiber, by carding machine the abundant combing of fiber and one-tenth net are exported, by lapping machine the fiber web reciprocating folding type is become 7 layers of fiber web output again, then after 7 groups of drawing-offs, be respectively 100 * 10 through 6 operating pressures again
5Pa, 110 * 10
5Pa, 110 * 10
5Pa, 130 * 10
5Pa, 130 * 10
5Pa, 150 * 10
5The Hydroentangled post-drying of the water needle head of Pa is made grammes per square metre 100g/m
2, the not weaving fabric of superfine fiber of thickness 0.6mm.
Four layers of above-mentioned not weaving fabric of superfine fiber are passed through super-feeding device, be tiled on the transmission net eyes of loose setting machine, enter in the 6 joint preshrunk baking ovens of loose setting machine, 6 bringing-up section temperature of baking oven are set as successively: 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 135 ℃.The superfine fiber fabric that goes out baking oven cools off rolling after two pairs of smooth rolls of misunderstanding each other compress, be made into grammes per square metre 460g/m
2, thickness 1.7mm four layers of composite setting cloth.
Above-mentioned four layers of composite setting cloth through dipping polyurethane, toluene extraction, are made average grammes per square metre 490g/m
2, thickness 1.4mm the superfine fiber chemical leather base material.With the oven dry that oils of above-mentioned base material, be separated into four layers of average grammes per square metre 120g/m by stripping machine
2, thickness 0.35mm superfine fiber chemical leather, and can carry out further final finishing technique to it.
Comparative Examples
Selecting total fiber number is that the island component of 6dtex is that polyamide, sea component are poly not island ultrafine fiber, use first thick opener to the shredding of the thick section of fiber, again with refined opener to the further meticulous shredding of fiber, then in mixing large storehouse to the further combined balance system of fiber, by carding machine the abundant combing of fiber and one-tenth net are exported, by lapping machine the fiber web reciprocating folding type is become 24 layers of fiber web output again, then by repeated puncture entangled fiber about 6 needing machines, make grammes per square metre 600g/m
2, thickness 2.4mm, needling density 1420 thorn/cm
2Not weaving fabric of superfine fiber.
Through the baking oven laxation shaping, Temperature Setting is 90～150 ℃, makes the individual layer setting cloth with above-mentioned not weaving fabric of superfine fiber; Through dipping polyurethane, toluene extraction, make grammes per square metre 640g/m again
2, thickness 1.6mm the superfine fiber chemical leather base material.With the oven dry that oils of above-mentioned base material, then cut open split, it is three layers that base material is cutd open, every layer average grammes per square metre 200g/m
2, thickness 0.5mm, obtain superfine fiber chemical leather, and can carry out further final finishing technique to it.
The superfine fiber chemical leather that embodiment 1～3 and Comparative Examples are obtained carries out strength test, employing be the GT-TC2000 tensiometer that Guangdong High Speed Rail Testing Instruments Co., Ltd produces, test result is as shown in table 1:
Table 1
From above test result as seen, adopt the first multiple-layer overlapped of technical solution of the present invention compound, peel off again the superfine fiber chemical leather that the embodiment 1～3 of the manufacture craft of layering obtains, be compared to the superfine fiber chemical leather that adopts traditional Comparative Examples of cuing open split technique to obtain, owing to avoided in the production process the mechanical wounding of synthetic leather, had obviously higher tensile strength, tearing strength, peel strength and burst strength.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the production method of a superfine fiber chemical leather is characterized in that, may further comprise the steps:
A, be that poly sea-island composite fiber is made grammes per square metre≤200g/m with sea component
2Not weaving fabric of superfine fiber;
B, described not weaving fabric of superfine fiber is carried out multiple-layer overlapped under 90～150 ℃ compound, makes the MULTILAYER COMPOSITE setting cloth;
C, described MULTILAYER COMPOSITE setting cloth is processed through dipping polyurethane and toluene extraction, made the superfine fiber chemical leather base material;
D, described superfine fiber chemical leather base material is peeled off layering, obtain superfine fiber chemical leather.
2. production method according to claim 1 is characterized in that, described step B comprises:
With the overlapping placement of the described not weaving fabric of superfine fiber of multilayer, be conveyed into the preshrunk that under 90～150 ℃, relaxes in the baking oven, through the pressure roller compression of misunderstanding each other, make described MULTILAYER COMPOSITE setting cloth again.
3. production method according to claim 2 is characterized in that, described baking oven comprises a plurality of bringing-up sections that temperature arranges from low to high.
4. production method according to claim 1 is characterized in that, the sea component of described sea-island composite fiber is low density polyethylene (LDPE).
5. production method according to claim 1 is characterized in that, the island component of described sea-island composite fiber is polyamide.
6. production method according to claim 1 is characterized in that, the island component of described sea-island composite fiber is polyester.
7. each described production method in 6 according to claim 1 is characterized in that,
The method that described not weaving fabric of superfine fiber adopts acupuncture to tangle is made, and grammes per square metre is 120～200g/m
2
Described MULTILAYER COMPOSITE setting cloth is undertaken overlapping by 2～3 layers of described not weaving fabric of superfine fiber and makes.
8. each described production method in 6 according to claim 1 is characterized in that,
Described not weaving fabric of superfine fiber adopts Hydroentangled method to make, and grammes per square metre is 80～120g/m
2
Described MULTILAYER COMPOSITE setting cloth is undertaken overlapping by 4～5 layers of described not weaving fabric of superfine fiber and makes.
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| CN201210543551.3A CN102965967B (en) | 2012-12-13 | 2012-12-13 | Production method of superfine fiber synthetic leather |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023717A (en) * | 2018-08-16 | 2018-12-18 | 吉安市三江超纤无纺有限公司 | A kind of multilayer woven fabric Simulated leather base cloth manufacturing method |
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| CN101457482A (en) * | 2009-01-04 | 2009-06-17 | 山东同大纺织印染有限公司 | Superfine fibre woven fibric chemical leather and method for producing the same |
| CN101591860A (en) * | 2008-05-30 | 2009-12-02 | 上海华峰超纤材料股份有限公司 | The scratch resistance processing method of island ultrafine fiber suede not |
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| CN102304858A (en) * | 2011-07-28 | 2012-01-04 | 山东同大海岛新材料股份有限公司 | Preparation method of superfine fiber high-imitation grain synthetic leather |
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2012
- 2012-12-13 CN CN201210543551.3A patent/CN102965967B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101591860A (en) * | 2008-05-30 | 2009-12-02 | 上海华峰超纤材料股份有限公司 | The scratch resistance processing method of island ultrafine fiber suede not |
| CN101457482A (en) * | 2009-01-04 | 2009-06-17 | 山东同大纺织印染有限公司 | Superfine fibre woven fibric chemical leather and method for producing the same |
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| CN102304858A (en) * | 2011-07-28 | 2012-01-04 | 山东同大海岛新材料股份有限公司 | Preparation method of superfine fiber high-imitation grain synthetic leather |
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| CN109023717A (en) * | 2018-08-16 | 2018-12-18 | 吉安市三江超纤无纺有限公司 | A kind of multilayer woven fabric Simulated leather base cloth manufacturing method |
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Owner name: ZHEJIANG YUANXIN INDUSTRY CO., LTD. Free format text: FORMER OWNER: ZHEJIANG KEY SYNTHETIC LEATHER CO., LTD. Effective date: 20140417 |
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Effective date of registration: 20140417 Address after: Dong'ou Industrial Park, Oubei Town, Yongjia County, Wenzhou City, Zhejiang province 325001 Applicant after: ZHEJIANG KEY SYNTHETIC LEATHER CO., LTD. Address before: Wenzhou Dong'ou Industrial Park, Yongjia County, Wenzhou City, Zhejiang province 325105 Applicant before: Zhejiang Key Synthetic Leather Co., Ltd. |
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