Method of preparing imitating super-fiber synthetic leather

A manufacturing method and technology for synthetic leather, applied in textiles and papermaking, textiles, fabrics, etc., can solve the problems of long process, high energy consumption, difficult recovery of alkali or toluene, etc., and achieve the effect of improving flexibility

Active Publication Date: 2009-02-11
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing microfiber synthetic leather uses sea-island fiber as the cloth base, and obtains good back effect and hand feeling through processes such as alkali weight reduction or toluene weight reduction. The selection of raw materials and complicated process make the price much higher than Ordinary synthetic leather cannot be popularized in promotion and use. The reduction of toluene also leads to a harsh working environment due to the volatility of toluene. Controlling the explosion limit is also the focus of the production of microfiber synthetic leather, which is harmful to the physical, mental and personal safety of processing workers. It is a great test, not only that, the recovery of alkali or toluene after the reduction is difficult, which brings environmental protection problems, and its complicated process and long process also bring corresponding big energy consumption problems

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0026] The process equipment involved in the whole process of implementation includes: cloth rack, cloth storage device, ironing machine, impregnation tank with quantitative roller and pressing roller, coagulation tank, water washing tank, drying equipment, cooling equipment, winding roller , Sanding machine, etc.

[0027] Prepare polyurethane slurry according to the following parts by weight

[0028] The solid content is 30-40%, and the modulus is 30-80kg / cm 2 Polyurethane 100 parts

[0029] Dimethylformamide DMF 100-150 parts

[0030] Lignocellulose 10-20 parts

[0031] Anionic surfactant SF-7 0.5~2 parts

[0032] Nonionic surfactant S-8I 0.5~2 parts

[0033] Polysiloxane CF 0.2~0.5 parts

[0034] The specific selection of each material:

[0035] Polyurethane adopts the product of SW-3060 from Hefei Amway Chemical Company, with a solid content of 38% and a modulus of 50kg / cm 2 . ;

[0036] The lignin is the product of BE-300 from the German JRS company, and the fin...

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Abstract

The invention relates to a manufacturing method of imitating microfiber synthetic leather, which is characterized in that woven fabric with double-sided floss is chosen as base fabric. Under normal temperature and pressure, polyurethane slurry is used for infiltrating the base fabric completely. After coagulation, polyurethane epithelial films are formed on the two surfaces of the base fabric. The base fabric with the polyurethane epithelial films formed on the two surfaces is successively washed by water to replace solvent, dried and molded to obtain a semi-manufactured product. Sanding treatment is implemented on the back of the semi-manufactured product to obtain a finished product. The method of the invention is simple with low cost and is beneficial to safety, environmental protection and energy saving. The imitating microfiber synthetic leather which is provided with the same hand feeling and back effect as microfiber synthetic leather can be obtained.

Description

technical field [0001] The invention relates to a manufacturing method of synthetic leather, more specifically a manufacturing method for obtaining a product similar to superfine fiber synthetic leather in terms of feel and back effect. Background technique [0002] Due to the constraints of natural conditions and the strengthening of animal protection awareness in countries around the world, especially the strengthening of environmental protection awareness, the use of natural leather is decreasing year by year. Synthetic leather is the best substitute for natural leather. China is a big country with a population of 1.3 billion. According to incomplete calculations, the current domestic demand for synthetic leather exceeds 800 million m 2 / year, and maintain an upward trend, among which the annual demand for high-performance and high-quality synthetic leather can reach 200 million m 2 above. Ordinary synthetic leather is quite different from natural leather in terms of fl...

Claims

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Application Information

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IPC IPC(8): D06N3/06D03D27/00
Inventor 李道鹏程艳西王义峰徐丽娟姚和平
Owner ANHUI ANLI MATERIAL TECH
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