CN105256086A - Waterproof wet-rubbing-resistant leather and production method thereof - Google Patents
Waterproof wet-rubbing-resistant leather and production method thereof Download PDFInfo
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- CN105256086A CN105256086A CN201510723874.4A CN201510723874A CN105256086A CN 105256086 A CN105256086 A CN 105256086A CN 201510723874 A CN201510723874 A CN 201510723874A CN 105256086 A CN105256086 A CN 105256086A
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Abstract
The invention relates to waterproof wet-rubbing-resistant leather and a production method thereof, and belongs to the technical field of leather. The production method of the waterproof wet-rubbing-resistant leather comprises the following steps that after crust leather passing through a wet processing station is fetched and dried, priming coating, spraying, roller coating, ironing and drying are carried out in sequence, and therefore the waterproof wet-rubbing-resistant leather is obtained. The treating processes of priming coating, spraying, roller coating, ironing, drying and the like are adopted, coating used in the processes of priming coating, spraying and roller coating is improved, and therefore the obtained leather has excellent water resistance and wet rubbing resistance, and also has good abrasion resistance and bending resistance at the same time.
Description
Technical field
The invention belongs to leather technology field, be specifically related to a kind of waterproof leather of resistance to wet rubbing and production method thereof.
Background technology
Leather, generally refers to through tanning, taw or obtain have ventilation property and flexible animal skin with additive method preparation.
In recent years, the usage quantity of leather rises year by year, is widely used on footwear, clothing, bag and various daily necessities, therefore also improves gradually the performance requriements of leather.But because leather is in dress and use procedure, surface easily produces or is infected with dirt, when clean, can use unavoidably wet rubbing or other contain the leather cleaning agent of water, the poor leather of water-repellancy long-time use clean after, just there will be the phenomenon such as variable color, cracking, especially the leather that wet-rub resistance can be poor, after repeatedly wet rubbing cleans, the lighter can cause the coating shedding of coatingsurface, and severe patient can make leather fission look.
Therefore the production method of leather is improved, to provide a kind of water-repellancy and the good leather of wet-rub resistance.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, and provide a kind of water leather of resistance to wet rubbing and production method thereof, the leather produced according to the method has good water-repellancy and wet-rub resistance, meanwhile, also has good wear resistance.
The present invention adopts following technical scheme:
The production method of the waterproof leather of resistance to wet rubbing, the scytoblastema of the wet processing workshop section that comprises the steps: to learn from else's experience, after drying, successively through primary coat, spraying, roller coat, press, be drying to obtain the described waterproof leather of resistance to wet rubbing;
Wherein, described primary coat is: according to mass fraction meter, 10-15 part modified polyorganosiloxane water-based emulsion, 25-30 part aqueous anionic polyurethane dispersion liquid and 5-10 part aqueous nitrocellulose emulsion are added in 100-120 part water successively, be warming up to 30-35 DEG C, stir, with coating roller roller coating in scytoblastema surface, at 60-70 DEG C, toast 20-25min;
Described spraying is: according to mass fraction meter, 20-25 part water-borne acrylic resin dispersion liquid and 3-6 part aqueous protein bonding agent are added in the water of 120-130 part, keep water temperature 20-25 DEG C, after stirring, even application is to above-mentioned scytoblastema surface after primary coat, at 40-50 DEG C, leave standstill 1-2h;
Described roller coat is: according to mass fraction meter, adds in 90-100 part water successively by 0.1-0.3 part water-soluble cross-linker, 20-30 part aqueous acrylic emulsion, and after stirring, roller coat is in above-mentioned scytoblastema surface after spraying, dry 30-50min at 70-80 DEG C;
Described ironing is: by the scytoblastema after above-mentioned roller coat in 80-85 DEG C, press under 60-100bar pressure;
Described drying is: left standstill at 25-35 DEG C by the scytoblastema after above-mentioned ironing, naturally dry, obtain the described waterproof leather of resistance to wet rubbing.
Further, the production method of the described waterproof leather of resistance to wet rubbing, in wherein said primary coat, the solid content of modified polyorganosiloxane water-based emulsion is 50%, the solid content of described aqueous anionic polyurethane dispersion liquid is 30-33%, pH is 8-9, and the solid content of described aqueous nitrocellulose emulsion is 12.5%, and described primary coat amount is 5-6g/ square chi scytoblastema.
Further, the production method of the described waterproof leather of resistance to wet rubbing, in wherein said spraying, water-borne acrylic resin dispersion liquid solid content is 35%, pH is 7-8, and the solid content of described aqueous protein bonding agent is 18.5-20%, pH is 9-10, and proportion is 1.01-1.03g/cm
3, viscosity is 800-4000cps, and described quantity for spray is 6-8g/ square chi scytoblastema.
Further, the production method of the described waterproof leather of resistance to wet rubbing, wherein said roller coat is inverse roller coating, and described roller coat amount is 10-15g/ square chi scytoblastema, and wherein said water-soluble cross-linker solid content is 50%, and viscosity is 150cps.
The present invention also provides a kind of waterproof leather of resistance to wet rubbing.
The present invention compared with prior art, its beneficial effect is: the present invention is by treatment process such as primary coat, spraying, roller coat, ironing, dryings and improve the coating used in primary coat, spraying, roller coating, make the leather obtained have excellent water-repellancy and wet-rub resistance, also there is good wear resistance and resistance to tortuosity simultaneously.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting scope of the present invention.In the present invention, described modified polyorganosiloxane water-based emulsion model is that MelioWF-5238 is purchased from Clariant Chemical Co., Ltd., described aqueous anionic polyurethane dispersion liquid model is MelioPromul62.A, purchased from Clariant Chemical Co., Ltd., described aqueous nitrocellulose emulsion model WieMelioEW-D-330, purchased from Clariant Chemical Co., Ltd., the model of described water-borne acrylic resin dispersion liquid is MelioResinA-716-ID, purchased from Clariant Chemical Co., Ltd., described aqueous protein bonding agent model is BI-1370, purchased from the meticulous coating company limited of Si Taer, water-soluble cross-linker model is XR-13-436, purchased from the meticulous coating company limited of Si Taer.
embodiment 1
The production method of the waterproof leather of resistance to wet rubbing, the scytoblastema of the wet processing workshop section that comprises the steps: to learn from else's experience, after drying, successively through primary coat, spraying, roller coat, press, be drying to obtain the described waterproof leather of resistance to wet rubbing;
Wherein, described primary coat is: according to mass fraction meter, 13 parts of modified polyorganosiloxane water-based emulsions, 28 parts of aqueous anionic polyurethane dispersion liquids and 8 parts of aqueous nitrocellulose emulsions are added in 110 parts of water successively, be warming up to 32 DEG C, stir, with coating roller roller coating in scytoblastema surface, 20min is toasted at 65 DEG C, wherein, the solid content of modified polyorganosiloxane water-based emulsion is 50%, and the solid content of described aqueous anionic polyurethane dispersion liquid is 32%, pH is 8, the solid content of described aqueous nitrocellulose emulsion is 12.5%, and described primary coat amount is 5.5g/ square chi scytoblastema.
Described spraying is: according to mass fraction meter, 22 parts of water-borne acrylic resin dispersion liquids and 4 parts of aqueous protein bonding agents are added in the water of 125 parts, keep water temperature 22 DEG C, after stirring, even application is to above-mentioned scytoblastema surface after primary coat, at 45 DEG C, leave standstill 1.h, wherein, water-borne acrylic resin dispersion liquid solid content is 35%, pH is 7, and the solid content of described aqueous protein bonding agent is 19%, pH is 9, and proportion is 1.02g/cm
3, viscosity is 2000cps, and described quantity for spray is 7g/ square chi scytoblastema;
Described roller coat is: according to mass fraction meter, 0.2 part of water-soluble cross-linker, 25 parts of aqueous acrylic emulsions are added in 95 parts of water successively, after stirring, roller coat is in above-mentioned scytoblastema surface after spraying, dry 40min at 750 DEG C, wherein, described roller coat is inverse roller coating, and described roller coat amount is 13g/ square chi scytoblastema, wherein said water-soluble cross-linker solid content is 50%, and viscosity is 150cps;
Described ironing is: by the scytoblastema after above-mentioned roller coat in 83 DEG C, press under 80bar pressure;
Described drying is: left standstill at 30 DEG C by the scytoblastema after above-mentioned ironing, naturally dry, obtain the described waterproof leather of resistance to wet rubbing.
embodiment 2
The production method of the waterproof leather of resistance to wet rubbing, the scytoblastema of the wet processing workshop section that comprises the steps: to learn from else's experience, after drying, successively through primary coat, spraying, roller coat, press, be drying to obtain the described waterproof leather of resistance to wet rubbing;
Wherein, described primary coat is: according to mass fraction meter, 10 parts of modified polyorganosiloxane water-based emulsions, 25 parts of aqueous anionic polyurethane dispersion liquids and 5 parts of aqueous nitrocellulose emulsions are added in 100 parts of water successively, be warming up to 30 DEG C, stir, with coating roller roller coating in scytoblastema surface, 20min is toasted at 60 DEG C, wherein, the solid content of modified polyorganosiloxane water-based emulsion is 50%, and the solid content of described aqueous anionic polyurethane dispersion liquid is 30%, pH is 8, the solid content of described aqueous nitrocellulose emulsion is 12.5%, and described primary coat amount is 5g/ square chi scytoblastema.
Described spraying is: according to mass fraction meter, 20 parts of water-borne acrylic resin dispersion liquids and 3 parts of aqueous protein bonding agents are added in the water of 120 parts, keep water temperature 20 DEG C, after stirring, even application is to above-mentioned scytoblastema surface after primary coat, at 40 DEG C, leave standstill 1h, wherein, water-borne acrylic resin dispersion liquid solid content is 35%, pH is 7, and the solid content of described aqueous protein bonding agent is 18.5%, pH is 9, and proportion is 1.01g/cm
3, viscosity is 800cps, and described quantity for spray is 6g/ square chi scytoblastema;
Described roller coat is: according to mass fraction meter, 0.1 part of water-soluble cross-linker, 20 parts of aqueous acrylic emulsions are added in 90 parts of water successively, after stirring, roller coat is in above-mentioned scytoblastema surface after spraying, dry 30min at 70 DEG C, wherein, described roller coat is inverse roller coating, and described roller coat amount is 10g/ square chi scytoblastema, wherein said water-soluble cross-linker solid content is 50%, and viscosity is 150cps;
Described ironing is: by the scytoblastema after above-mentioned roller coat in 80 DEG C, press under 100bar pressure;
Described drying is: left standstill at 25 DEG C by the scytoblastema after above-mentioned ironing, naturally dry, obtain the described waterproof leather of resistance to wet rubbing.
embodiment 3
The production method of the waterproof leather of resistance to wet rubbing, the scytoblastema of the wet processing workshop section that comprises the steps: to learn from else's experience, after drying, successively through primary coat, spraying, roller coat, press, be drying to obtain the described waterproof leather of resistance to wet rubbing;
Wherein, described primary coat is: according to mass fraction meter, 15 parts of modified polyorganosiloxane water-based emulsions, 30 parts of aqueous anionic polyurethane dispersion liquids and 10 parts of aqueous nitrocellulose emulsions are added in 120 parts of water successively, be warming up to 35 DEG C, stir, with coating roller roller coating in scytoblastema surface, 25min is toasted at 70 DEG C, wherein, the solid content of modified polyorganosiloxane water-based emulsion is 50%, and the solid content of described aqueous anionic polyurethane dispersion liquid is 33%, pH is 9, the solid content of described aqueous nitrocellulose emulsion is 12.5%, and described primary coat amount is 6g/ square chi scytoblastema.
Described spraying is: according to mass fraction meter, 20-25 part water-borne acrylic resin dispersion liquid and 6 parts of aqueous protein bonding agents are added in the water of 130 parts, keep water temperature 25 DEG C, after stirring, even application is to above-mentioned scytoblastema surface after primary coat, at 50 DEG C, leave standstill 2h, wherein, water-borne acrylic resin dispersion liquid solid content is 35%, pH is 8, and the solid content of described aqueous protein bonding agent is 20%, pH is 10, and proportion is 1.03g/cm
3, viscosity is 4000cps, and described quantity for spray is 8g/ square chi scytoblastema;
Described roller coat is: according to mass fraction meter, 0.3 part of water-soluble cross-linker, 30 parts of aqueous acrylic emulsions are added in 100 parts of water successively, after stirring, roller coat is in above-mentioned scytoblastema surface after spraying, dry 50min at 80 DEG C, wherein, described roller coat is inverse roller coating, and described roller coat amount is 15g/ square chi scytoblastema, wherein said water-soluble cross-linker solid content is 50%, and viscosity is 150cps;
Described ironing is: by the scytoblastema after above-mentioned roller coat in 85 DEG C, press under 60bar pressure;
Described drying is: left standstill at 35 DEG C by the scytoblastema after above-mentioned ironing, naturally dry, obtain the described waterproof leather of resistance to wet rubbing.
Carry out performance test to the embodiment of the present invention 1 to 3 gained leather, wherein the dynamic water-proof of water resistance test leather, tests according to GJB2589.14-96; Wet-rub resistance carries out as follows: get test specimens skin, long 20cm, wide 4cm, get calico wetting with distilled water in advance, water content 100%, with its friction testing sample skin, friction frequency is per minute 30 times, reciprocating friction 150 times, after calico is dry at 50-60 DEG C, dried calico and pollution gray scales are compared, visual calico situation, result of determination: excellent: calico does not stay color, illustrates that leather wet-rub resistance can be excellent; Good: calico leaves Little color, illustrate that leather wet-rub resistance can be good; Not good: calico leaves number of colors, illustrate that leather wet-rub resistance can not be good, wear resistance mainly tests the unlubricated friction performance of leather, tests with reference to GJB2589.8-96.
Table 1 performance test
As seen from the above table, by carrying out the operations such as primary coat, spraying, roller coat, ironing, drying to leather, not only optimizing production technique, also coating being improved, effectively ensure that water-repellancy and the wet-rub resistance of leather, enhancing the wear resistance of leather.
The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall into the claimed scope of the invention
In.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. the production method of the waterproof leather of resistance to wet rubbing, is characterized in that, the scytoblastema of the wet processing workshop section that comprises the steps: to learn from else's experience, after drying, successively through primary coat, spraying, roller coat, press, be drying to obtain the described waterproof leather of resistance to wet rubbing;
Wherein, described primary coat is: according to mass fraction meter, 10-15 part modified polyorganosiloxane water-based emulsion, 25-30 part aqueous anionic polyurethane dispersion liquid and 5-10 part aqueous nitrocellulose emulsion are added in 100-120 part water successively, be warming up to 30-35 DEG C, stir, with coating roller roller coating in scytoblastema surface, at 60-70 DEG C, toast 20-25min;
Described spraying is: according to mass fraction meter, 20-25 part water-borne acrylic resin dispersion liquid and 3-6 part aqueous protein bonding agent are added in the water of 120-130 part, keep water temperature 20-25 DEG C, after stirring, even application is to above-mentioned scytoblastema surface after primary coat, at 40-50 DEG C, leave standstill 1-2h;
Described roller coat is: according to mass fraction meter, adds in 90-100 part water successively by 0.1-0.3 part water-soluble cross-linker, 20-30 part aqueous acrylic emulsion, and after stirring, roller coat is in above-mentioned scytoblastema surface after spraying, dry 30-50min at 70-80 DEG C;
Described ironing is: by the scytoblastema after above-mentioned roller coat in 80-85 DEG C, press under 60-100bar pressure;
Described drying is: left standstill at 25-35 DEG C by the scytoblastema after above-mentioned ironing, naturally dry, obtain the described waterproof leather of resistance to wet rubbing.
2. the production method of the waterproof leather of resistance to wet rubbing according to claim 1, it is characterized in that, in described primary coat, the solid content of modified polyorganosiloxane water-based emulsion is 50%, the solid content of described aqueous anionic polyurethane dispersion liquid is 30-33%, pH is 8-9, and the solid content of described aqueous nitrocellulose emulsion is 12.5%, and described primary coat amount is 5-6g/ square chi scytoblastema.
3. the production method of the waterproof leather of resistance to wet rubbing according to claim 1, is characterized in that, in described spraying, water-borne acrylic resin dispersion liquid solid content is 35%, pH is 7-8, and the solid content of described aqueous protein bonding agent is 18.5-20%, pH is 9-10, and proportion is 1.01-1.03g/cm
3, viscosity is 800-4000cps, and described quantity for spray is 6-8g/ square chi scytoblastema.
4. the production method of the waterproof leather of resistance to wet rubbing according to claim 1, is characterized in that, described roller coat is inverse roller coating, and described roller coat amount is 10-15g/ square chi scytoblastema, and wherein said water-soluble cross-linker solid content is 50%, and viscosity is 150cps.
5. by the waterproof leather of resistance to wet rubbing that the production method of the waterproof leather of resistance to wet rubbing according to claim 1 is obtained.
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Cited By (5)
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| CN106148579A (en) * | 2016-08-30 | 2016-11-23 | 晋江市永建皮革制品有限公司 | A kind of antibacterial leather of resistance to wet rubbing and processing technology thereof |
| CN108166264A (en) * | 2017-12-22 | 2018-06-15 | 海宁卡森皮革有限公司 | A kind of production line for sofa artificial leather |
| CN108755156A (en) * | 2018-05-31 | 2018-11-06 | 安徽银河皮革有限公司 | Corrosion-resistant, the functional green leather production method of resistance to deformation |
| CN110774721A (en) * | 2019-11-13 | 2020-02-11 | 嘉善精田精密机械制造有限公司 | Processing method of cashmere leather cloth |
| CN112725545A (en) * | 2020-12-10 | 2021-04-30 | 兴业皮革科技股份有限公司 | Coating processing technology of imitation oil-ground sanded leather |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148579A (en) * | 2016-08-30 | 2016-11-23 | 晋江市永建皮革制品有限公司 | A kind of antibacterial leather of resistance to wet rubbing and processing technology thereof |
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| CN108166264A (en) * | 2017-12-22 | 2018-06-15 | 海宁卡森皮革有限公司 | A kind of production line for sofa artificial leather |
| CN108166264B (en) * | 2017-12-22 | 2020-12-15 | 邳州恒翔生物制品有限公司 | A production line for sofa leather |
| CN108755156A (en) * | 2018-05-31 | 2018-11-06 | 安徽银河皮革有限公司 | Corrosion-resistant, the functional green leather production method of resistance to deformation |
| CN110774721A (en) * | 2019-11-13 | 2020-02-11 | 嘉善精田精密机械制造有限公司 | Processing method of cashmere leather cloth |
| CN112725545A (en) * | 2020-12-10 | 2021-04-30 | 兴业皮革科技股份有限公司 | Coating processing technology of imitation oil-ground sanded leather |
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