Preparation process for pig skin top layer instep leather free of chrome tanning

A preparation process, a technology for shoe upper leather, which is applied in leather degreasing, leather impregnation, small raw hide/large raw hide/leather/fur treatment, etc., can solve the problems of insufficient plumpness, complicated tanning steps, low efficiency, etc.

Active Publication Date: 2016-04-20
海宁家纺产业基地投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the production process of this invention has the problems of complicated tanning steps, low efficiency, poor quality of tanned glove leather, not plump enough, and not soft enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Embodiment: a kind of chrome-free tanned pigskin top layer shoe upper leather preparation process, comprises the following steps (starting from pickle skin embryo, the addition amount of each process additive is based on the quality of pickle leather): pickling softening, Main tanning, degreasing and softening, retanning, water squeezing and neutralization, dyeing and fatliquoring and softening and spraying, the specific embodiments of the present invention are described in detail below:

[0019] Remarks on process consumption, material temperature and time

[0020] Pickling softening 10% industrial salt 25 ℃ liquid ratio 200%

[0021] 1.0% sulfuric acid 120minpH1.8

[0022] Main Tanning 1.0% Sodium Formate

[0023] 0.5% baking soda 30minpH3.0

[0024] 0.5% triglyceride phosphate 30min

[0025] 2.0% aluminum tanning agent 60min

[0026] 2.0% glutaraldehyde tanning agent 60min

[0027] 2.0% glutaraldehyde tanning agent 60min

[0028] 2.0% glutaraldehyde tanning ag...

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PUM

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Abstract

The invention belongs to the field of instep leather preparation processes, and particularly relates to a preparation process for pig skin top layer instep leather free of chrome tanning. The preparation process comprises the following steps that from pickled skin scytoblastema, the addition quantity of additives in all the procedures is based on the mass of pickled skin, and pickling and softening, main tanning, degreasing and softening, retanning, water extruding and neutralizing, dyeing and stuffing and staking and spouting are included. The preparation process for the pig skin top layer instep leather free of chrome tanning has the advantages that the steps are simple, preparation efficiency is high, the requirement of the preparation process for equipment is low, energy saving and environment friendliness are achieved, and the prepared instep leather is resistant to wear and high temperature, full and soft.

Description

technical field [0001] The invention belongs to the field of shoe upper leather preparation technology, in particular to a preparation technology of chrome-free tanned pigskin top layer shoe upper leather. Background technique [0002] Leather industry is an important traditional light industry in my country, and it is also one of the industries with serious pollution discharge. Traditional leather mostly uses chrome as a tanning agent, and the processed chrome-tanned leather has the advantages of high temperature resistance, good thermal stability, plump leather body, and softness. With increasing emphasis on the living environment and the use of environmentally friendly leather, the development of chrome-free tanned leather has become an inevitable trend. [0003] The Chinese invention patent with the patent publication number CN101225450A and the publication date of 2008.07.23 discloses a chrome-free tanning process for goatskin glove leather, which includes the followin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/08C14C3/04C14C3/08C14C5/00C14C9/00C14C3/12
CPCC14C1/08C14C3/04C14C3/08C14C3/12C14C5/00C14C9/00
Inventor 钱世峰石益英
Owner 海宁家纺产业基地投资开发有限公司
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