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Retanning and dyeing method of semi-sheep vegetable tanned clothing leather

A dyeing method and semi-vegetable tanning technology, which is applied in the retanning and dyeing field of sheep semi-vegetable tanned garment leather, can solve the problems of material waste, poor dyeing effect, long retanning and dyeing time, etc., and achieve saving dyeing time and good effect , The effect of reducing processing costs

Active Publication Date: 2015-04-29
浙江祥隆皮革股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the retanning process of sheep semi-vegetable tanned garment leather, there are disadvantages such as long retanning and dyeing time, serious material waste and poor dyeing effect

Method used

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Experimental program
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Effect test

Embodiment Construction

[0015] A kind of retanning and dyeing method of sheep semi-vegetable tanned garment leather described in the present embodiment, the steps are as follows:

[0016] The first step is to carry out the smoothing treatment first, that is, the thickness of the double layer is 1.0mm;

[0017] The second step, followed by degreasing and rinsing treatment, and then washed with water;

[0018] The third step is to carry out neutralization treatment again, and the pH value is controlled at about 6;

[0019] In the fourth step, after mixing 10% tannin extract, 4% protein filler, 6% phenolic tannin and 4% synthetic tannin, retanning is carried out for 2 hours;

[0020] The fifth step is to mix 4% dye and 1% leveling agent for dyeing treatment; mix 16% fatliquoring agent and 2% color fixing agent, and then perform bath change and over-dyeing treatment to make the color Bright and bright, the drum is still;

[0021] The sixth step is to stretch and hang to dry, return to water, and then ...

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PUM

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Abstract

The invention relates to a retanning and dyeing method and particularly relates to a retanning and dyeing method of semi-sheep vegetable tanned clothing leather. The invention aims to provide the retanning and dyeing method of semi-sheep vegetable tanned clothing leather, wherein the method is time-saving and material-saving and good in dyeing effect. The method comprises the following steps: S1, firstly shaving, namely the shaving thickness is 1.0mm in double layers; S2, degreasing and rinsing and then washing; S3, neutralizing and controlling the pH value at about 6; and S4, after mixing 10-12% of a tannin extract, 3-4% of protein filler, 4-6% of phenol tannin and 3-4% of synthetic tannin, retanning for 2 hours. According to the retanning and dyeing method of sheepskin designed by the invention, not only is the dyeing time shortened and the processing cost lowered, but also the vegetable tanned leather effect is good.

Description

technical field [0001] The invention relates to a retanning and dyeing method, in particular to a retanning and dyeing method of sheep semi-vegetable tanned garment leather. Background technique [0002] At present, in the retanning process of sheep semi-vegetable tanned garment leather, there are disadvantages such as long retanning and dyeing time, serious material waste and poor dyeing effect. [0003] In view of the above problems, we urgently need to solve them. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for retanning and dyeing sheep semi-vegetable tanned garment leather that saves time and materials and has good dyeing effect. [0005] In order to achieve the above object, the retanning and dyeing method of a kind of sheep semi-vegetable tanned clothing leather designed by the present invention, the steps are as follows: [0006] The first step is to carry out the sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/00C14C1/08C14C3/08C14C9/02C14C11/00
CPCC14C1/00C14C1/08C14C3/08C14C3/10C14C9/02C14C11/003
Inventor 魏文华
Owner 浙江祥隆皮革股份有限公司