Method for tanning pigskin first layer shoe lining leather by utilizing non-chromium metal compound tanning agent

A non-chromium metal, compound tanning agent technology, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather/fur mechanical treatment, etc. Stability, poor processability, large gap and other problems, to achieve a good factory industrial production basis, high shrinkage temperature, good matching effect

Inactive Publication Date: 2010-06-02
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three technologies have one or more of the following problems in the actual industrial production engineering: the shrinkage temperature of leather cannot be stabilized above 90°C; the performance of leather is far behind that of chrome tanned leather; Some leather processing technology systems; after eliminating chromium pollution, it brings pollution problems such as organic phosphorus and formaldehyde
Conventional chrome-tanned shoe linings are difficult to meet the detection requirements of environmental labeling products for hexavalent chromium and total chromium, while conventional chrome-free tanned shoe linings cannot stabilize the shrinkage temperature of finished leather above 90°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) refueling: the pickled pigskin of the conventional caustic soda skin technology is squeezed, the buttocks are cut, weighed, placed in the drum, the weight of the skin is increased to 250%, and the weight of the material in the drum is 100 parts; Add 150 parts of normal temperature salt water with a concentration of 6 Baume into the drum, add 0.5 part of non-ionic oil, and rotate for 20 minutes;

[0046] (2) Tanning: add 10 parts of non-chrome metal compound tanning agent, 2.5 parts of chrome-free tanning partner D6, and rotate for 120 minutes; add 1.2 parts of sharp tanning agent GM-40, and rotate for 180 minutes; The pH is 3.2; finally add 100 parts of hot water at 60°C, keep the internal temperature at 36°C, and rotate for 60 minutes; overnight, wash out the drum with water the next day.

Embodiment 2

[0048](1) Refueling: the pickled pigskin of the conventional caustic soda peeling process is squeezed, the buttocks are cut, weighed, placed in the drum, the weight of the skin is increased to 280%, and the weight of the material in the drum is 100 parts; Add 180 parts of normal temperature salt water with a concentration of 7 Baume degrees in the drum, add 1.0 parts of non-ionic oil, and rotate for 30 minutes;

[0049] (2) Tanning: add 10 parts of non-chrome metal compound tanning agent, 2.5 parts of chrome-free tanning partner D6, and rotate for 120 minutes; add 1.2 parts of sharp tanning agent GM-40, and rotate for 180 minutes; The pH is 3.2; finally add 100 parts of hot water at 60°C, keep the internal temperature at 36°C, and rotate for 60 minutes; overnight, wash out the drum with water the next day.

Embodiment 3

[0051] (1) refueling: the pickling pigskin of the conventional caustic soda peeling process is squeezed, the buttocks are cut, weighed, placed in the drum, the weight of the skin is increased to 300%, and the weight of the material in the drum is 100 parts; Add 200 parts of normal temperature salt water with a concentration of 8 degrees Baume into the drum, add 1.5 parts of non-ionic oil, and rotate for 40 minutes;

[0052] (2) Tanning: add 10 parts of non-chrome metal compound tanning agent, 2.5 parts of chrome-free tanning partner D6, and rotate for 120 minutes; add 1.2 parts of sharp tanning agent GM-40, and rotate for 180 minutes; The pH is 3.2; finally add 100 parts of hot water at 60°C, keep the internal temperature at 36°C, and rotate for 60 minutes; overnight, wash out the drum with water the next day.

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PUM

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Abstract

The invention relates to a method for tanning pigskin first layer shoe lining leather by utilizing a non-chromium metal compound tanning agent. The method comprises an oil adding step and a tanning step. In the tanning step, an LTA-100 metal (without chromium) compound tanning agent, non-chromium tanning chaperones D6, an auxiliary tanning agent GM-40 and the like are adopted. The method is characterized in that the leather shrinkage temperature in industrial production can reach more than 90 DEG C, which conforms to the shoe-making manufacture requirement; the hexavalent chromium and total chromium detection requirement of the environment identification product can be met; the method has no phosphorus pollution and no formaldehyde release; the tannery sludge can be directly burned; a post-tanning process and the material do not need special adjustment, and the integrity property is good when compared with the traditional leather-making process. The invention meets the limit requirement on the hexavalent chromium and total chromium content of the environment identification product, has high shrinkage temperature, and provides a new path for shoe-making enterprises to produce high-grade environment-protection shoe lining leather.

Description

technical field [0001] The invention belongs to the field of leather tanning, and specifically refers to a method for tanning pigskin top layer shoe lining with a non-chromium metal compound tanning agent. Background technique [0002] Chrome tanning, which has a history of more than 100 years, has been the mainstream technology of leather tanning because it can impart excellent performance to leather, and it is almost unshakable. Chromium pollution in the tanning industry has three sources: first, pollution in the production and processing of chromium-containing materials; second, pollution in sewage, sludge, and chromium-containing solid waste in the tanning production process; Third, secondary pollution to the environment after consumption of chromium-containing products. This pollution is often ignored by people, but it accounts for about 70% of the total chromium pollution in the whole leather industry, and it is quite scattered, which is not conducive to treatment or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/02C14C9/02C14B1/02
Inventor 兰云军周建飞程天行许晓红金强伟刘建国
Owner WENZHOU UNIVERSITY
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