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Regeneration method of waste leather

A leather and waste technology, applied in the field of leather processing, can solve problems such as waste of resources, and achieve the effects of easy operation, improved protein strength and simple method.

Inactive Publication Date: 2018-02-23
安徽乐踏鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning; with the gradual improvement of people's living standards, the demand for leather clothing, leather pants, leather shoes and leather furniture is increasing. The production of waste leather is also increasing. At present, except for most of the waste leather, only a small part is used, and the waste leather is crushed and extracted for collagen or chromium. In the end, there will also be 30% The raw material residues become fertilizers, causing a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of regeneration method of waste leather, comprises the following steps:

[0021] (1) Cleaning: Clean the waste leather with clean water to obtain the cleaning material;

[0022] (2) Softening: Put the cleaning material in the softening solution and soak it in a drum at 12°C for 8 hours, so that the softening solution slowly penetrates into the waste leather and fully softens it. The softening solution is safe and healthy, does not contain any toxic reagents, and contains a lot of peptides , biological enzymes and proteoglycans can activate protein activity in waste leather, improve leather softness and smoothness, and obtain softening materials;

[0023] (3) Retanning: Put the softening material in the amino resin retanning agent, run it in the drum at 12°C for 8 hours, then increase the temperature to 32°C, and run it for 4 hours, so that the retanning agent is fully immersed in the leather, and Proteins are fully combined to improve the softness and abrasion r...

Embodiment 2

[0032] A kind of regeneration method of waste leather, comprises the following steps:

[0033] (1) Cleaning: Clean the waste leather with clean water to obtain the cleaning material;

[0034] (2) Softening: Put the cleaning material in the softening solution and soak it in a drum at 13°C for 9 hours, so that the softening solution slowly penetrates into the waste leather and fully softens it. The softening solution is safe and healthy, does not contain any toxic reagents, and contains a lot of peptides , biological enzymes and proteoglycans can activate protein activity in waste leather, improve leather softness and smoothness, and obtain softening materials;

[0035] (3) Retanning: Put the softening material in the amino resin retanning agent, run it in the drum at 13°C for 9 hours, then increase the temperature to 33°C, and run it for 5 hours, so that the retanning agent is fully immersed in the leather. Proteins are fully combined to improve the softness and abrasion resis...

Embodiment 3

[0044] A kind of regeneration method of waste leather, comprises the following steps:

[0045] (1) Cleaning: Clean the waste leather with clean water to obtain the cleaning material;

[0046](2) Softening: Put the cleaning material in the softening solution and soak it in a drum at 14°C for 10 hours, so that the softening solution slowly penetrates into the waste leather and fully softens it. The softening solution is safe and healthy, does not contain any toxic reagents, and contains a lot of peptides , biological enzymes and proteoglycans can activate protein activity in waste leather, improve leather softness and smoothness, and obtain softening materials;

[0047] (3) Retanning: Put the softening material in the amino resin retanning agent, run it in the drum at 14°C for 10 hours, then increase the temperature to 34°C, and run it for 6 hours, so that the retanning agent is fully immersed in the leather. Proteins are fully combined to improve the softness and abrasion resi...

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Abstract

The invention mainly relates to the technical field of leather processing and discloses a regeneration method of waste leather. The regeneration method comprises cleaning, softening, retanning, strengthening, drying and packaging, the method is simple and convenient to operate, softness and strength of the waste leather can be restored, secondary use can be achieved, and the traditional preparation method of recycling the waste leather and regenerating leather is avoided. The novel waste leather treating method is provided, the method is green and environmentally friendly, waste residues of raw materials are not generated, the waste leather is fully recycled, after being cleaned, the waste leather is placed into softening liquid to be subjected to low-temperature rotary drum soaking, thus,the softening liquid permeates into the waste leather slowly, softening treatment is carried out fully, the softening liquid is safe and healthy, does not contain any poisonous agent, contains plentyof polypeptide, bio-enzyme and protein polysaccharide, and can activate protein activity in the waste leather, and softness and smoothness of the leather are improved.

Description

technical field [0001] The invention mainly relates to the technical field of leather processing, in particular to a regeneration method of waste leather. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning; with the gradual improvement of people's living standards, the demand for leather clothing, leather pants, leather shoes and leather furniture is increasing. The production of waste leather is also increasing. At present, except for most of the waste leather, only a small part is used, and the waste leather is crushed and extracted for collagen or chromium. In the end, there will also be 30% The raw material residue becomes fertilizer, which causes a great waste of resources. Contents of the invention [0003] In order to make up for the defects of the prior art, the purpose of the present invention is to provide a method for regenerating waste leather. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/08C14C3/22C14C9/00C14C11/00C14B1/58
CPCC14C1/08C14B1/58C14C3/22C14C9/00C14C11/00C14C11/003
Inventor 陈献军
Owner 安徽乐踏鞋业有限公司
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