Process for producing leather

Abstract

The invention relates to the field of the manufacture of leather and provides a process for producing the leather. The production cost is reduced by changing the formula of the process. The process comprises the following steps of: preparing a crust, milling the crust, toggling, tumbling, trimming, patching, buffing, blowing dust and cleaning, spraying cations, tumbling for the second time, spraying, repairing corners, tumbling for the third time, trimming for the second time, rolling, obtaining G gloss, pressing a plate, spraying for the second time, obtaining water gloss, tumbling for the fourth time, milling for the second time, staking, tumbling for the fifth time, and spraying a handle agent.

Description

technical field [0001] The invention relates to the field of leather manufacture, in particular to a leather production process. Background technique [0002] The processing process of traditional leather is generally as follows: (1) Preparation process: remove the useless substances (such as hair, epidermis, fat, fibrous interstitium, subcutaneous tissue, etc.) and loose collagen fibers in the raw hide to prepare for tanning; (2) ) Tanning process: It is a qualitative change process that turns raw hide into leather, and is the key to the entire leather processing process. The tanned leather can obtain a series of tanning effects. (3) Finishing process: Through the action of a series of leather chemicals and various mechanical processing, the leather can obtain various use values. [0003] The process of leather processing is generally: raw hide → soaking → fleshing → degreasing → hair removal → alkali soaking → swelling → deliming → softening → pickling → tanning → splitti...

AI Technical Summary

Problems solved by technology

[0004] In the traditional leather production process, the chrome tanning method is used, which pollutes the environment and harms the human body greatly; the method of spraying the bottom paste puts a lot of pressure on the spraying machine and needs to use more chemicals

In the traditional process, spraying 5000SF leather embryo three times needs to consume 80kg of chemical materials, which is very costly