Kid lamb skin tanning process using amphoteric vegetable tanning agent

Abstract

A kid lamb skin tanning process using an amphoteric vegetable tanning agent is composed of a preparatory step, a tanning step, and a finishing step; the preparatory step comprises softening collected kid lamb raw skins to restore the raw skins to the conditions of fresh skins, and removing redundant components between skin plate fibers of the raw skins; the tanning step comprises primary tanning and main tanning; in the tanning step, filling primary tanning of the skins is completed mainly by means of the characteristics of macromolecules, high filling ability, good extensibility, and stable stereostructure of the vegetable tanning agent; further, in the tanning step, tanning is carried out by using a low-astringency low-concentration vegetable tanning liquor, and after the collagenous fibers of the naked skins are primarily immobilized, permeation and filling of the tanning liquor are completed gradually to guarantee that a tannin gradually permeates into the naked skins and bonds with skin collagen; and the finishing step comprises fat-liquoring, moisture regaining, staking and shaping of the skin plates as well as hair finishing. The kid lamb skins tanned by means of the kid lamb skin tanning process using the amphoteric vegetable tanning agent has the advantages of small difference between thin and thick parts of the skin plates, full plate texture, fine piles, and locks of bent hair that is natural, has rich wonderful luster and may rival Tan-sheep kid furs.

Description

Technical field: [0001] The invention relates to the technical field of animal hide tanning processing technology, in particular to a tanning process of raccoon skin with an amphoteric vegetable tanning agent. Background technique: [0002] Ningxia scorpion leather is thin, with less underlining, rich guard hair, tight fiber structure, and difficult to fill. Generally, scorpion leather tanned by traditional tanning techniques has quicksand, dry hair, hard skin, and tight fiber structure. , Filling difficult technical problems, at the same time, the product and the environment caused by the process itself are polluted, and precious resources have not been effectively developed. [0003] As people's attention to environmental protection continues to grow, vegetable tanning agents will once again become a tanning agent that is happy to be used in leather and fur making processes, and vegetable tanned leather will also regain its former status in the world's leather industry. S...

AI Technical Summary

Problems solved by technology

[0002] Ningxia scorpion leather is thin, with less underlining, rich guard hair, tight fiber structure, and difficult to fill. Generally, scorpion leather tanned by traditional tanning techniques has quicksand, dry hair, hard skin, and tight fiber structure. , Difficult technical problems in filling, and at the same time, the product and the environment caused by the process itself are polluted greatly, and precious resources have not been effectively developed

[0003] As people's attention to environmental protection continues to grow, vegetable tanning agents will once again become a tanning agent that is happy to be used in leather and fur making processes, and vegetable tanned leather will also regain its former status in the world's leather industry. Some status, this is because vegetable tanning agents are based on renewable natural resources; Tanned leather is hard, the leather surface is rough, and the shrinkage temperature is low, so it is generally not used

Amphoteric syntans have the advantages of small molecules, good permeability, low astringency, not easy to be oxidized and discolored, and the leather surface of the tanned leather is fine, soft, and good in extensibility. , Xilu goat and other leather species are difficult to fill effectively

At present, this kind of leather tanning process is combined with traditional formaldehyde, chrome tanning agent, chrome aluminum tanning agent, etc., which generally causes serious air and soil pollution.