Processing method for water-proof polyurethane imitation leather

A processing method, polyurethane technology, applied in chemical instruments and methods, textile and papermaking, synthetic resin layered products, etc. The effect of simple processing

CN101492886AActive Publication Date: 2009-07-29WUXI MANYOULI NEW COMPOSITE MATERIALS

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: WUXI MANYOULI NEW COMPOSITE MATERIALS
Publication Date: 2009-07-29

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Abstract

The invention discloses a processing method for waterproof polyurethane artificial leather. The polyurethane and dimethylformamide are mixed and then added with a modified polysiloxane defoaming agent for sufficient agitation, the agitated mixture, after being still placed for over 12 hours, is coated twice as a material slurry on release paper followed by drying and adherence of tetrahedral elastic foundation fabric, and is then dried by a baking oven to be winded and peeled; after being still placed for over 12 hours, the finished waterproof polyurethane artificial leather can be obtained. The invention has good waterproof performance, colorful appearance and soft hand feeling, and can withstand the high-frequency-suppressed temperature when processing. Compared with domestic similar products, the peeling force of the invention is 1.5 times, the bursting force of the invention is higher by 1 / 4, the tear load of the invention is 1.7 times, the resistance at high temperature of 180 DEG C is 20 minutes, the hydrolytic resistance is doubled and the like. In addition, the processing technique is simple and is convenient for specific implementation.

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Description

technical field

[0001] The invention relates to a processing method of artificial leather, in particular to a processing method of waterproof polyurethane artificial leather. Background technique

[0002] Since the artificial leather product interview, products with various textures and specifications have appeared on the market, and their functions have also developed in diversification. Gradually, the waterproof artificial leather product has appeared due to the needs of the market. There are two main types of waterproof artificial leather, "PVC" waterproof leather and "PU" waterproof leather: "PVC" waterproof leather generally uses the characteristics of polyvinyl chloride itself to achieve waterproof effect, but at the same time because of the material itself The weight is relatively large, causing the weight of the product to exceed 500g per square meter, making the product very bulky and uncomfortable to wear, and the water pressure resistance effect can only reach abo...

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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