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Fabric coating method

A fabric and coating technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of unfavorable fabric application, shortened coating operation time, hard fabric feel, etc. long effect

Inactive Publication Date: 2018-03-09
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above fabric coating method, when the water-soluble organic onium salt or inorganic salt contacts with the aqueous dispersion of polyurethane, polyacrylate or polybutadiene, the water-soluble organic onium salt or inorganic salt releases The aqueous dispersion of metal cations and polyurethane, polyacrylate or polybutadiene precipitates quickly on the surface of the fabric and in the crevices of the fabric fibers, shortening the working time of the coating, and the deposits in the crevices of the fabric fibers cannot pass through the subsequent washing steps removed, resulting in a hard hand of the coated fabric, which is not conducive to the application of the fabric, especially in the synthetic leather industry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fabric coating method

Examples

Experimental program
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Effect test

Embodiment 1

[0154] Immerse the superfine fiber non-woven fabric into component A) for 12 seconds, take out the superfine fiber non-woven fabric, and wring the superfine fiber non-woven fabric with a wringing device under 4bar pressure, so that the residual microfiber non-woven fabric The amount of liquid is 120%, and then the microfiber non-woven fabric is dried at 110-140°C for 5 minutes. Subsequently, the ultrafine fiber nonwoven fabric was immersed in component B) for 15 seconds, the ultrafine fiber nonwoven fabric was taken out, and placed at 80° C. for 10 minutes to precipitate Impranil DLE on the surface of the ultrafine fiber nonwoven fabric. Under the pressure of 4bar, the superfine fiber non-woven fabric is wrung dry with a wringing device, so that the residual liquid amount in the superfine fiber non-woven fabric is 150%, and the superfine fiber non-woven fabric is dried at 90°C for 3 minutes, Immerse in water at 80°C for 1 minute, then dry the microfiber non-woven fabric with a...

Embodiment 2

[0156] Immerse the single-sided raised knitted fabric into component A) for 60 seconds, take out the single-sided raised knitted fabric, and wring the single-sided raised knitted fabric with a wringing device under a pressure of 4 bar, so that the residual liquid amount in the single-sided raised knitted fabric is 180%. Subsequently, the single-face raised knitted fabric was immersed in component B) for 120 seconds, the single-face raised knitted fabric was taken out, and placed at 100° C. for 20 minutes to precipitate Impranil DLE on the surface of the single-face raised knitted fabric. After drying the single-side raised knitted fabric at 90°C for 3 minutes, soak it in water at 50°C for 2 minutes, and then wring the single-sided raised knitted fabric with a wringing device under 4 bar pressure to make the residual The amount of liquid is 80%, repeat the steps of washing and wringing 4 times, and finally wring the single-sided raised knitted fabric with a wringing device unti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a fabric coating method and coated fabric obtained by the method. The method includes following steps: a), enabling fabric to contact with a component A) which contains water-insoluble salt, water-soluble thickener and water; b), enabling the fabric which has contacted with the component A) to contact with a component B) which contains waterborne polymer dispersoid and acid capable of reacting with the water-insoluble salt in the component A) to obtain the coated fabric. By the method, no organic solvent is used, and the coated fabric has good hand feeling like softness.

Description

technical field [0001] The invention relates to a fabric coating method and the obtained coated fabric. Background technique [0002] The coated fabric can be used to make synthetic leather. Synthetic leather is often used in shoe uppers, clothing or upholstery. Fabric coating processes typically employ solutions containing polyurethane in an organic solvent such as DMF. One of the commonly used methods for fabric coating is the coagulation method, which includes the steps of: first immersing the fabric in a solution containing polyurethane, and then passing the fabric through multiple DMF / water baths, and the ratio of water in each DMF / water bath is gradually increased. The coated fabric obtained by the coagulation method has good air permeability and soft hand feeling, and is suitable for high-quality synthetic leather. However, the toxicity of organic solvents in the coating process can cause damage to the health of operators. In order to reduce the health damage of o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00
CPCD06N3/0061D06N3/0063D06N2211/28D06M15/05D06M15/09D06M15/227D06M15/263D06M15/564D06N3/02D06N3/042D06N3/10D06N3/14D06N3/183D06N3/186D06N2205/24
Inventor R·伊尔尼奇赵学辉姚林灵梁旭天
Owner COVESTRO DEUTSCHLAND AG