CN109267368A - A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance - Google Patents
A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance Download PDFInfo
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- CN109267368A CN109267368A CN201811213173.6A CN201811213173A CN109267368A CN 109267368 A CN109267368 A CN 109267368A CN 201811213173 A CN201811213173 A CN 201811213173A CN 109267368 A CN109267368 A CN 109267368A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
-
- 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
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
-
- 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
Abstract
The present invention relates to macromolecule polyurethane synthetic leather production fields, more particularly to a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, two steps of production and two-sided attaching process including bass, score takes 5-10 parts of synthetic fibers powder by weight, 5-10 parts of sapwood fiber powder, 1-5 parts of light calciums, 40-60 parts of dimethylformamides, 10-15min is stirred in container, 0.2-0.5 portions of anionic surfactants are added again, 0.2-0.5 portions of nonionic surfactants, then 15-25 parts of A and 15-20 parts of polyurethane resin of polyurethane resin B is added, and the aqueous color paste of 0.01-0.1, 20-25min is stirred with high-speed mixer.The present invention passes through the research to wet polyurethane layer, a kind of bass for being suitble to two-sided fitting is made, recycle two-sided attaching process, and raw material, to the auxiliary of fitting fastness, in addition two-sided use for synthetic leather of the invention is bonded alternative composite technique, does not use adhesive, contain free formaldehyde in adhesive, biological growth and human health are endangered, the present invention is eliminated from source to be polluted, ecological, environmental protective.
Description
Technical field
The present invention relates to macromolecule polyurethane synthetic leather production field more particularly to a kind of two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance
Production method.
Background technique
Two-sided leather has become the new lover in Synthetic Leather market at this stage.Two-sided Synthetic Leather, its front and back sides are equal
It is different colours, different decorative patterns.So, on the one hand, for consumers, the collocation style of product colour and lines is richer
Richness, style is more various, meets the majority of consumers' diversification, personalized consumption demand；On the other hand, to luggage, shoes etc.
For manufacturer, the back side need to be further processed in common single side leather, and two-sided leather can directly produce production without being reprocessed
Time and cost is greatly saved in product.
Existing two-sided leather on the market, mostly two pieces of single side leathers carry out compounded two-sided leather, this product by
Adhesive is used in centre, feel is partially hard, and technique is also relatively cumbersome, serious waste of resources, moreover containing free in adhesive
Formaldehyde seriously pollutes environment, endangers human health.Another kind be the two-sided leather of fit type, the existing two-sided leather of fit type due to by
Bass and technique limitation, fitting fastness is poor, and peel strength is low, and wear-resisting scratch resistance performance is poor, and product quality is difficult to reach production requirement.
In view of the deficiencies of the prior art, the present invention provides a kind of production sides of the two-sided leather of fit type of Environment-friendlywear-resistant wear-resistant scratch resistance
Method, the invention improve the physical and chemical performance of the two-sided leather of common fit type by the research to wet process bass and attaching process.This hair
Two-sided leather surface made of bright was scraped with hard object without sharp trace, and wear-resisting property is not broken (with reference to QB/T2726- up to 5000 turns
2005 standards are tested, emery wheel model using TABER abrasion wear test machine: CS-10, weight bearing: 750g).
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, are asked with solving above-mentioned technology
Topic.
The present invention using following technical scheme in order to solve the above technical problems, realized:
A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, it is characterised in that: specific step is as follows:
Step 1: the production of bass:
A: score takes 5-10 parts of synthetic fibers powder, 5-10 parts of sapwood fiber powder, 1-5 parts of light calciums, 40-60 parts of dimethyl by weight
Formamide stirs 10-15min in container, stirs evenly, for use；
B: being added 0.2-0.5 portions of anionic surfactants in the mixture into step a, 0.2-0.5 parts of non-ionic surfaces are living
Property agent, stir 5min, for use；
C: the aqueous color paste of 15-25 parts of A and 15-20 parts of polyurethane resin of polyurethane resin B and 0.01-0.1 is added
In the mixture formed to step b, 20-25min is stirred with high-speed mixer, being made into viscosity is 8000-10000cps/25 DEG C
Wet polyurethane layer slurry；
D: being put into mixture is obtained in step c in vacuum machine, carries out deaeration processing；
E: the mixture after deaeration is filtered with the filter screen of 60-100 mesh；
F: the wet polyurethane coating obtained after step e is coated in base fabric, and bass is made；
Step 2: two-sided attaching process:
A: by bass obtained in step 1, using common fitting, printing, the front progress of flower, treatment process to bass is inhaled
Single side Synthetic Leather is made in processing；
B: the polyurethane resin C for being 2400cps/25 DEG C with viscosity carries out a scraper processing in textured release paper, so
It puts 150-180 DEG C of baking oven into afterwards to be dried, for use；
C: the polyurethane resin D that one layer of viscosity is 2400cps/25 DEG C will be coated in the release paper after scraper in step b, coating is thick
Degree is 0.12mm, then passes through 150-180 DEG C of baking oven secondary drying, for use；
D: the polyurethane resin E that one layer of viscosity is 2800cps/25 DEG C, coating will be coated in the release paper after scraper in step c again
With a thickness of 0.15mm, by 100-120 DEG C of baking oven be dried to it is half-dried after, be bonded in the bass back side, remove, be made two-sided
Leather.
Preferably, it is cps/25 DEG C of 18-30 ten thousand, solid content 30.0 ± 1.0%, 100% mould that the polyurethane resin A, which is viscosity,
Amount is 2.0-3.0Mpa, and appearance is colourless to weak yellow liquid, and the resin voluptuousness is thick and solid, and elasticity is good, and high at flesh, low mistake is thick
Rate.
Preferably, it is cps/25 DEG C of 16-26 ten thousand that the polyurethane resin B, which is viscosity, and solid content is 30.0 ± 1.0%, appearance
To be colourless to weak yellow liquid.
Preferably, the base fabric is 0.8 microtriche cloth.
Preferably, the coating thickness of the wet polyurethane coating is 0.65-0.75cm.
Preferably, the polyurethane resin C is the dimethylformamide that soft dry method surface layer resin adds that mass fraction is 80
It dilutes.
Preferably, the polyurethane resin D be in soft dry method surface layer resin add the dimethyl formyl that mass fraction is 80
Amine, then add 3-10 parts of toner and stir evenly.
Preferably, the polyurethane resin E is the common dry method tie layer resins of one liquid type of ultra-soft matter, is with mass fraction
40-60 parts of dimethylformamide dilutes.
The beneficial effects of the present invention are:
The present invention is made a kind of bass for being suitble to two-sided fitting, recycles two-sided fitting by the research to wet polyurethane layer
A kind of advanced two-sided leather of fitting new process of Environment-friendlywear-resistant wear-resistant scratch resistance, this hair is made to the auxiliary of fitting fastness in technique and raw material
Two-sided leather surface made of bright was scraped with hard object without sharp trace, and wear-resisting property is not broken up to 5000 turns, in addition pair of the invention
Face use for synthetic leather is bonded alternative composite technique, does not use adhesive, contains free formaldehyde in adhesive, seriously pollute environment, endanger
Biological growth and human health, the present invention is eliminated from source to be polluted, ecological, environmental protective.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained, and however, the following embodiments are merely preferred embodiments of the present invention, and not all.
Based on the implementation example in the implementation mode, those skilled in the art's obtained other realities without making creative work
Example is applied, protection scope of the present invention is belonged to.Experimental method in following embodiments is unless otherwise specified conventional method,
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
Embodiment 1
A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, it is characterised in that: specific step is as follows:
Step 1: the production of bass:
A: score takes 6 parts of synthetic fibers powder, 6 parts of sapwood fiber powder, 2 parts of light calciums, 40 parts of dimethylformamides, Yu Rong by weight
12min is stirred in device, is stirred evenly, for use；
B: 0.2 portion of anionic surfactant, 0.2 portion of nonionic surfactant, stirring are added in the mixture into step a
5min, for use；
C: the aqueous color paste of 15 parts of polyurethane resin A and 18 parts of polyurethane resin B and 0.03 are added to step b shape
At mixture in, stir 20min with high-speed mixer, being made into viscosity is 8000cps/25 DEG C of wet polyurethane layer slurry；
D: being put into mixture is obtained in step c in vacuum machine, carries out deaeration processing；
E: the mixture after deaeration is filtered with the filter screen of 80 mesh；
F: the wet polyurethane coating obtained after step e is coated in base fabric, and bass is made；
Step 2: two-sided attaching process:
A: by bass obtained in step 1, using common fitting, printing, the front progress of flower, treatment process to bass is inhaled
Single side Synthetic Leather is made in processing；
B: the polyurethane resin C for being 2400cps/25 DEG C with viscosity carries out a scraper processing in textured release paper, so
It puts 150 DEG C of baking oven into afterwards to be dried, for use；
C: the polyurethane resin D that one layer of viscosity is 2400cps/25 DEG C will be coated in the release paper after scraper in step b, coating is thick
Degree is 0.12mm, then passes through 150 DEG C of baking oven secondary drying, for use；
D: the polyurethane resin E that one layer of viscosity is 2800cps/25 DEG C, coating will be coated in the release paper after scraper in step c again
With a thickness of 0.15mm, by 120 DEG C of baking oven be dried to it is half-dried after, be bonded in the bass back side, remove, two-sided leather is made.
It is made in 100 two-sided leather by the above process, randomly selects 10, tested with TABER abrasion wear test machine, emery wheel type
Number: CS-10, weight bearing: 750g carries out wearability experiment to two-sided leather, detects two-sided leather and whether can reach 5000 turns and does not break, real
After testing, 10 two-sided leather are observed, it is found that 8 surfaces are intact, 1 surface mild wear, 1 is seriously worn, qualified
Rate is 80%, and then two-sided leather is sealed in cloche, with the concentration of formaldehyde in methylene oxide detecting instrument detection cloche, detection knot
Fruit is qualified.
Embodiment 2
Step 1: the production of bass:
A: score by weight takes 10 parts of synthetic fibers powder, 10 parts of sapwood fiber powder, 5 parts of light calciums, 60 parts of dimethylformamides, in
12min is stirred in container, is stirred evenly, for use；
B: 0.5 portion of anionic surfactant, 0.5 portion of nonionic surfactant, stirring are added in the mixture into step a
5min, for use；
C: the aqueous color paste of 25 parts of polyurethane resin A and 20 parts of polyurethane resin B and 0.1 are added to step b and formed
Mixture in, stir 20min with high-speed mixer, being made into viscosity is 10000cps/25 DEG C of wet polyurethane layer slurry；
D: being put into mixture is obtained in step c in vacuum machine, carries out deaeration processing；
E: the mixture after deaeration is filtered with the filter screen of 65 mesh；
F: the wet polyurethane coating obtained after step e is coated in base fabric, and bass is made；
Step 2: two-sided attaching process:
A: by bass obtained in step 1, using common fitting, printing, the front progress of flower, treatment process to bass is inhaled
Single side Synthetic Leather is made in processing；
B: the polyurethane resin C for being 2400cps/25 DEG C with viscosity carries out a scraper processing in textured release paper, so
It puts 150 DEG C of baking oven into afterwards to be dried, for use；
C: the polyurethane resin D that one layer of viscosity is 2400cps/25 DEG C will be coated in the release paper after scraper in step b, coating is thick
Degree is 0.12mm, then passes through 150 DEG C of baking oven secondary drying, for use；
D: the polyurethane resin E that one layer of viscosity is 2800cps/25 DEG C, coating will be coated in the release paper after scraper in step c again
With a thickness of 0.15mm, by 120 DEG C of baking oven be dried to it is half-dried after, be bonded in the bass back side, remove, two-sided leather is made.
Embodiment 1, embodiment 2 are different with the raw material weight of the bass of embodiment 3, and method and step in addition to this is all the same.
It is made in 100 two-sided leather by the above process, randomly selects 10, tested with TABER abrasion wear test machine, emery wheel type
Number: CS-10, weight bearing: 750g carries out wearability experiment to two-sided leather, detects two-sided leather and whether can reach 5000 turns and does not break, real
After testing, 10 two-sided leather are observed, it is found that 9 surfaces are intact, 1 surface mild wear, 0 is seriously worn, qualified
Rate is 90%, and then two-sided leather is sealed in cloche, with the concentration of formaldehyde in methylene oxide detecting instrument detection cloche, detection knot
Fruit is qualified.
Control group: existing two-sided leather in the market.
10 identical two-sided leather are arbitrarily bought on the market, are tested with TABER abrasion wear test machine, emery wheel model: CS-
10, weight bearing: 750g carries out wearability experiment to two-sided leather, detects two-sided leather and whether can reach 5000 turns and do not break, experiment terminates
Afterwards, 10 two-sided leather are observed, it is found that 3 surfaces are intact, 2 surface mild wears, 5 are seriously worn, and qualification rate is
30%, then two-sided leather is sealed in cloche, with the concentration of formaldehyde in methylene oxide detecting instrument detection cloche, testing result is
Content of formaldehyde is exceeded.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (8)
1. a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, it is characterised in that: specific step is as follows:
Step 1: the production of bass:
A: score takes 5-10 parts of synthetic fibers powder, 5-10 parts of sapwood fiber powder, 1-5 parts of light calciums, 40-60 parts of dimethyl by weight
Formamide stirs 10-15min in container, stirs evenly, for use；
B: being added 0.2-0.5 portions of anionic surfactants in the mixture into step a, 0.2-0.5 parts of non-ionic surfaces are living
Property agent, stir 5min, for use；
C: A and 15-20 parts of polyurethane resin of 15-25 parts of B and 0.01-0.1 parts of polyurethane resin of aqueous color paste is added
Enter in the mixture formed to step b, stir 20-25min with high-speed mixer, being made into viscosity is 8000-10000cps/25 DEG C
Wet polyurethane layer slurry；
D: being put into mixture is obtained in step c in vacuum machine, carries out deaeration processing；
E: the mixture after deaeration is filtered with the filter screen of 60-100 mesh；
F: the wet polyurethane coating obtained after step e is coated in base fabric, and bass is made；
Step 2: two-sided attaching process:
A: by bass obtained in step 1, using common fitting, printing, the front progress of flower, treatment process to bass is inhaled
Single side Synthetic Leather is made in processing；
B: the polyurethane resin C for being 2400cps/25 DEG C with viscosity carries out a scraper processing in textured release paper, so
It puts 150-180 DEG C of baking oven into afterwards to be dried, for use；
C: the polyurethane resin D that one layer of viscosity is 2400cps/25 DEG C will be coated in the release paper after scraper in step b, coating is thick
Degree is 0.12mm, then passes through 150-180 DEG C of baking oven secondary drying, for use；
D: the polyurethane resin E that one layer of viscosity is 2800cps/25 DEG C, coating will be coated in the release paper after scraper in step c again
With a thickness of 0.15mm, by 100-120 DEG C of baking oven be dried to it is half-dried after, be bonded in the bass back side, remove, be made two-sided
Leather.
2. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the polyurethane resin A
It is cps/25 DEG C of 18-30 ten thousand for viscosity, solid content 30.0 ± 1.0%, 100% modulus is 2.0-3.0Mpa, and appearance is colourless to light
Yellow liquid, the resin voluptuousness is thick and solid, and elasticity is good, high at flesh, the thick rate of low mistake.
3. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the polyurethane resin B
It is cps/25 DEG C of 16-26 ten thousand for viscosity, solid content is 30.0 ± 1.0%, and appearance is colourless to weak yellow liquid.
4. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the base fabric is 0.8 micro-
Felt.
5. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the wet polyurethane
The coating thickness of coating is 0.65-0.75cm.
6. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the polyurethane resin C
The dimethylformamide that soft dry method surface layer resin adds mass fraction to be 80 in dilutes.
7. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the polyurethane resin D
Add the dimethylformamide that mass fraction is 80 for soft dry method surface layer resin, then adds 3-10 parts of toner and make after mixing evenly
?.
8. as described in right 1, a kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance, which is characterized in that the polyurethane resin E
For the common dry method tie layer resins of one liquid type of ultra-soft matter, the dimethylformamide for being 40-60 parts with mass fraction dilutes.
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| CN201811213173.6A CN109267368A (en) | 2018-10-18 | 2018-10-18 | A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance |
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| CN201811213173.6A CN109267368A (en) | 2018-10-18 | 2018-10-18 | A kind of production method of the two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance |
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| CN110616571A (en) * | 2019-09-03 | 2019-12-27 | 清远市齐力合成革有限公司 | Production method of environment-friendly composite polyurethane synthetic leather |
| CN112391847A (en) * | 2020-10-16 | 2021-02-23 | 清远市齐力合成革有限公司 | Super-protein skin-feel synthetic leather |
| CN112760992A (en) * | 2020-12-28 | 2021-05-07 | 华伦皮塑（苏州）有限公司 | Wear-resistant basketball leather and preparation method thereof |
| CN113322686A (en) * | 2021-05-31 | 2021-08-31 | 宁波维泰针织织造有限公司 | Method for modifying artificial leather by using sea-island superfine fibers |
| CN114369961A (en) * | 2022-01-19 | 2022-04-19 | 华伦皮塑（苏州）有限公司 | Preparation method of recyclable double-sided luggage leather |
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| CN110616571A (en) * | 2019-09-03 | 2019-12-27 | 清远市齐力合成革有限公司 | Production method of environment-friendly composite polyurethane synthetic leather |
| CN112391847A (en) * | 2020-10-16 | 2021-02-23 | 清远市齐力合成革有限公司 | Super-protein skin-feel synthetic leather |
| CN112760992A (en) * | 2020-12-28 | 2021-05-07 | 华伦皮塑（苏州）有限公司 | Wear-resistant basketball leather and preparation method thereof |
| CN113322686A (en) * | 2021-05-31 | 2021-08-31 | 宁波维泰针织织造有限公司 | Method for modifying artificial leather by using sea-island superfine fibers |
| CN114369961A (en) * | 2022-01-19 | 2022-04-19 | 华伦皮塑（苏州）有限公司 | Preparation method of recyclable double-sided luggage leather |
| CN114369961B (en) * | 2022-01-19 | 2023-12-15 | 马鞍山瑞高科技有限公司 | Preparation method of recyclable double-sided luggage leather |
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Application publication date: 20190125 |