Leather production process

Abstract

The invention discloses a leather production process, which comprises the steps of 1) lot grouping: classifying the raw hides of leathers similar in width size and thickness; 2) soaking in water: soaking the raw hides in water after the lot grouping step; 3) unhairing and degreasing: removing grease in hide cells and hairs on the surfaces of the raw hides; 4) liming: adding alkali to expand the hides to a certain thickness for facilitating the splitting operation; 5) deliming and pickling: removing redundant alkali in the raw hides during the liming step; 6) tanning: connecting collagen groups in hide fibers by means of trivalent chromic ions, and enhancing the tensile strength and the anti-tear intensity of the leather; 7) re-tanning: selecting a retanning agent of better in filling effect to retan the tanned leather; 8) dyeing; 9) fatliquoring; 10) drying; 11) staking; 12) finishing; 13) examining and warehousing finished products. The leather production process is simple in operation, and the produced leather is good in durability. Meanwhile, the cost of manufacturers is saved, and the requirements of customers can be met at the same time.

Description

technical field [0001] The invention relates to the field of leather processing, in particular to a leather production process. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space, and has a special grain layer on its surface, which has natural grain and luster, and feels comfortable, so it is widely used by people. However, the leather in the prior art The processing technology is relatively chaotic, the quality of the processed leather is poor, and the durability of various leather products made with it is poor, which cannot meet the needs of consumers. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a leather production process, the production process is simple to operate, the produced leather has strong dura...

AI Technical Summary

Problems solved by technology

Leather is composed of natural protein fibers tightly woven in three-dimensional space, and has a special grain layer on its surface, which has natural grain and luster, and feels comfortable, so it is widely used by people. However, the leather in the prior art The processing technology is relatively chaotic, the quality of the processed leather is poor, and the durability of various leather products made from it is poor, which cannot meet the needs of consumers