Tan sheep fur tanning treatment process

Abstract

The invention discloses a tan sheep fur tanning treatment process, comprising branching, cleaning, fur soaking, fleshing, enzyme dipping, secondary fleshing, acid dipping and enzyme softening, aldehyde tanning, neutralizing, airing, dry shoveling, fur grinding and toggling molding; during fur soaking, mixed liquid of formaldehyde and water is used for soaking furs; the weight ratio of water to formaldehyde is 580-650: 1; in the enzyme dipping process, the weight ratio of water to water dipping enzyme is 1800-2200: 1; after tan sheep furs are neutralized, the airing is performed; the dry shoveling and the bur grinding are performed for the tan sheep furs by mechanical equipment; and the toggling molding is performed after dry grinding and fur grinding. Tan sheep bur boards tanned by the process are still soft, are bright in color, and are free of influencing the hair dying. The subcutaneous tissues of tan sheep furs are further destroyed through two times of fleshing to create conditions for subsequent enzyme softening and neutralizing process; and the process makes up the hair removing phenomenon caused by cancel of nitre dipping, shortens the tanning period, and achieves the purposes of energy conservation and consumption reduction.

Description

Technical field: [0001] The invention relates to the technical field of fur tanning, in particular to a tanning treatment process for flea wool. Background technique: [0002] Tan sheepskin is the skin of Tan sheep slaughtered about 45 days after birth. It has less undercoat, clear velvet roots and no adhesion. Pure white, and a few pure black, mainly produced in Yinchuan, Yanchi, Zhongwei, Ningxia, Helan Mountain, Inner Mongolia, and Jingyuan, Gansu. Tan sheepskin is one of the native products traditionally exported in my country. It is well-known at home and abroad for its strong leather board, light weight and warmth, smooth and beautiful fur, and curved wave pattern. In the prior art, the tanning process of Tan sheepskin includes skin washing and nitration process, which consumes a large amount of neutral salt in the nitration process, the operation is troublesome, and the pollution to the environment is serious, and the enzyme softening and nitration in the prior art ...

AI Technical Summary

Problems solved by technology

In the prior art, the tanning process of Tan sheepskin includes skin washing and nitration process. During the nitration process, a large amount of neutral salt is consumed, the operation is troublesome, and the pollution to the environment is relatively serious. The neutralization process takes a long time, which makes the tanning process of the whole Tan sheepskin take a long time, reduces work efficiency, and increases the tanning cost of Tan sheepskin