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Quality requirement of wet back process.


Wet back process includes washing, wetting, degreasing and bleaching. Quality requirement of wet back process are following:

1.      Thoroughly and uniformly wetting, leather after wetting is stretching;

2.      Scurf and dirt are thoroughly removed;

3.      Natural greases are removed, without oily feel;

4.      pH value is controlled at 3.2-4.0, in order to meet the requirement of retanning;

5.      For white or pale color leather, wet back process should give surface light, even color.

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Sichuan Tingjiang New Material Co.,Ltd