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Animal leather tanning method

A processing method and leather technology, which can be used in small raw hides/large raw hides/leather/fur treatment, small raw hides/large raw hides/leather hides/fur chemical treatment, tanning treatment, etc., which can solve the unsatisfactory appearance of finished products and other problems, to achieve the effect of full feel, good elasticity and simplified operation

Inactive Publication Date: 2015-09-30
刘从荡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still no comprehensive utilization of chromium, aluminum, titanium, zirconium and silicon for leather tanning.
Therefore, the current leather tanning methods do not give full play to the comprehensive advantages of the above-mentioned tanning materials, and the obtained products are still unsatisfactory in terms of physical, chemical and biological indicators and the appearance of finished products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1: Add 200-300 kg of water to 100 kg of bare leather with a pH of 1.0-2.0, add 0.15 kg of aluminum sulfate and 1.6 kg of sodium chloride in a drum with a diameter of 2 meters and a rotating speed of 8-10 rpm, and rotate for 3 hours ;

[0020] The second step: add 2.5 kilograms of sodium silicate, 0.8 kilograms of hydrochloric acid, and rotate for 6 hours;

[0021] The third step: add 0.1 kg of ammonium titanyl sulfate, 0.4 kg of sodium zirconyl sulfate, and rotate for 4 hours;

[0022] Step 4: Add 0.2 kg of red alum and rotate for 8 hours;

[0023] Step 5: Add 0.1 kg of sodium bicarbonate and rotate for 3 hours;

[0024] Step 6: Take out the drum, ride a horse and age for 48 hours.

Embodiment 2

[0026] Step 1: Add 200-300 kg of water to 100 kg of bare leather with a pH of 1.0-2.0, add 0.20 kg of aluminum sulfate and 1.2 kg of sodium chloride in a drum with a diameter of 2 meters and a rotating speed of 8-10 rpm, and rotate for 4 hours ;

[0027] The second step: add 1.5 kg of sodium silicate, 1 kg of hydrochloric acid, and rotate for 4 hours;

[0028] The third step: add 0.15 kg of ammonium titanyl sulfate, 0.2 kg of sodium zirconyl sulfate, and rotate for 6 hours;

[0029] The fourth step: add 0.25 kg of red alum and rotate for 5 hours;

[0030] Step 5: Add 0.5 kg of sodium bicarbonate and rotate for 5 hours;

[0031] Step 6: Take out the drum, ride a horse and age for 24 hours.

Embodiment 3

[0033] Step 1: Add 200-300 kg of water to 100 kg of bare skin with a pH of 1.0-2.0, add 0.18 kg of aluminum sulfate and 1.4 kg of sodium chloride in a drum with a diameter of 2 meters and a rotating speed of 8-10 rpm, and rotate for 3.5 hours ;

[0034] The second step: add 1.9 kilograms of sodium silicate, 0.9 kilograms of hydrochloric acid, and rotate for 5 hours;

[0035] The third step: add 0.13 kg of ammonium titanyl sulfate, 0.3 kg of sodium zirconyl sulfate, and rotate for 5 hours;

[0036] The fourth step: add 0.23 kg of red alum and rotate for 7 hours;

[0037] Step 5: Add 0.3 kg of sodium bicarbonate and rotate for 4 hours;

[0038] Step 6: Take out the drum, ride a horse and age for 36 hours.

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Abstract

The invention relates to an animal leather tanning method. The animal leather tanning method is characterized by comprising the following steps: firstly, adding 200-300kg of water into 100kg of naked leather with the pH value of 1.0-2.0, adding 0.15-0.20kg of aluminium sulphate and 1.2-1.6kg of sodium chloride while a rotating speed of a revolving drum with the diameter of 2m is 8-10rpm, and rotating for 3-4 hours; secondly, adding 1.5-2.5kg of sodium silicate and 0.8-1kg of hydrochloric acid, and rotating for 4-6 hours; thirdly, adding 0.1-0.15kg of titanyl sulphate ammonium salt and 0.2-0.4kg of sodium zirconyl sulphate, and rotating for 4-6 hours; fourthly, adding 0.2-0.25kg of red vitriol, and rotating for 5-8 hours; fifthly, adding 0.1-0.5kg of sodium bicarbonate, and rotating for 3-5 hours; and sixthly, taking leather out from the revolving drum, stacking and ageing for 24-48 hours.

Description

technical field [0001] The invention relates to a method for tanning animal leather. Background technique [0002] Chrome tanning agent has the best overall performance, so it is widely used in the field of animal leather leather at home and abroad. Its main disadvantages are high toxicity and heavy pollution. [0003] The content of silicon salt in the earth's crust is extremely rich, and it is non-toxic, which is inferior to other inorganic salt tanning materials. However, silicon tanned leather alone is not resistant to storage, and the leather becomes hard and brittle during storage. As a tanning material, titanium salt has the advantages of light fastness, washing resistance, and storage resistance. The disadvantage is that it is difficult to prepare tanning solution separately. As a tanning material, zirconium salt has good filling properties, but it is not easy to penetrate into the bare hide. The leather tanned with aluminum tanning material has fine hair and less ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/28C14C3/04
CPCC14C3/28C14C3/04
Inventor 刘从荡
Owner 刘从荡
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