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Why dose cracked grain present on vegetable leather and how to solve the problem?

Date:2016-03-29

Q: Why dose cracked grain present on vegetable leather and how to solve the problem? 

A: Cracked grain is that cracks present on the surface of leather when it is flexed. The appearance of cracked grain attributes to the following:

1.Surface of the hide/skin is damaged and become hard partially, cracks appears on it.

2.The pelt is partially burned.

3.Calcium salt appears on the surface because of insufficient washing after deliming.

4.Excess filling of the surface, insufficient detanning and rinsing.

5.Drying too fast so that it leads to inverse extract.

6.Water content of the leather is too low after drying, and without moisture restoration.

 

The following can help solve the problem:

1. Reinforce the controlling of operation in beamhouse, ensure the normal quality of pelts.
2. Thoroughly detanning and rinsing.

3. Keep a proper drying speed.

4. Paste on the leather surface with proper amount of greases.

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