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Two Layers Of New Technology Of Turning Waste Into Treasure

2008/8/18 12:31:00 41800

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The value of dermis is hard to compare with many materials, and the emergence of two layers of leather is inevitable.

How to improve the application value of the two layer leather has been troubling the leather experts all over the world.

The Levacast process of Bayer chemistry provides a solution for this purpose.

The two layer leather produced by this process has a fashionable appearance and a very durable surface quality, even if it is placed with top grade full grain leather.

This process can be used to mimic a variety of animal textures, including rare animal leathers.

Moreover, this polyurethane based finishing leather has the greatest advantage of high tensile and frictional resistance.

The process uses silica gel membrane to imitate the texture characteristics of natural leather very accurately.

The process of making the texture film is as follows: first choose the natural leather to be copied, then apply the solid silica gel to the leather. The silicone membrane is sprayed with a layer of waterborne polyurethane dispersion. After drying, the Levacast two component additive and hardening agent are mixed with spray gun to spray on the film.

Then the finished two layers of leather were immediately spread on the silica gel membrane and dried for a short time to remove the finished leather.

Silicone membrane can be used repeatedly.

In general, continuous release release paper can also be used instead of silica gel.

"Now the leather products we produce have been able to enter the European market smoothly."

Chen Chou, director of Wenzhou Chiao Xin Leather Co., Ltd., who successfully broke through EU technical barriers, was pleased with his words.

According to the Pingyang science and Technology Bureau, through introducing the relevant technology of Sichuan University, the general technology of Pingyang leather entering the EU market has been broken through, and has been checked and accepted by experts in leather industry.

Leather industry is the largest industry in Pingyang County, but leather making links seriously pollute the environment. Leather products are of low grade. The content of six valent chromium and azo in their products is too high. Many enterprises' products are rejected by the EU's "green barrier".

"Some tanneries in Pingyang have sought technical support from universities or research institutes through issuing technical demand information in the online technology market in Zhejiang, China."

Chen Erchou introduced that the "environmentally-friendly shoe leather clean production process" project required by the enterprise is through the docking of the Internet, the key technology of 3 tannery cleaner production technologies, which is undertaken by Sichuan University in the National 863 project, tannery industry, is settled in Pingyang.

A few days ago, Lan Yunjun, director of the Wenzhou Research Institute of Shaanxi University of Science and Technology and director of the Wenzhou leather industry technology research center of Wenzhou University, examined the technology, and the content of six valent chromium and azo in each kilogram of leather reached the EU leather product entry standard less than 0.3 mg.