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Production method for waterproof pig-skin shoe upper leather

A production method and pigskin technology are applied in the production field of waterproof pigskin shoe upper leather, which can solve the problems of uneven leather surface, poor water resistance, and large pores, achieve good degreasing effect, improve fullness and feel, soft touch effect

Inactive Publication Date: 2017-12-19
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] my country is a big pig raising country, and the amount of pig raising accounts for about one-third of the world's total. Pig leather tanning occupies a very important position in my country's leather industry, ranking first in the world. It accounts for more than half of the total output. Although pig leather has high firmness, it has the disadvantages of large pores, uneven leather surface, rough leather surface, poor softness, and poor water resistance. When improving the softness, water resistance and surface smoothness of pigskin, it is of positive significance to expand the application range of pigskin and improve the application value of pigskin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a kind of production method of waterproof pigskin upper leather, specifically:

[0016] (1) Pigskin depilation: Mix sodium carboxymethylcellulose, borax, diethylene glycol, and water at a volume ratio of 1:4:2:300 to obtain depilatory liquid, and spray the depilatory liquid on the root of pigskin hair , pre-freeze the pigskin at 2°C for 1.3 hours, freeze at -12°C for 25 minutes, and thaw the pigskin at room temperature. After fully thawing, pull out the pig hair and rinse the surface hair;

[0017] (2) Degreasing of pigskin: Mix hexamethamine, nitroglycerin, table salt, polyferric sulfate, diethylene glycol monocaprylyl ether, and water at a weight ratio of 0.1:1:3:1:0.5:1:200, and high-speed Shear emulsification to obtain a degreasing agent, immerse the pigskin in the degreasing agent, seal it, raise the temperature in the sealed tank to 55°C and keep it warm, pump the negative pressure to -0.02MPa, keep it for 32 minutes, put the processed pigskin in wat...

Embodiment 2

[0020] Embodiment 2, a kind of production method of waterproof pigskin upper leather, specifically:

[0021] (1) Pig skin hair removal: Mix sodium carboxymethyl cellulose, borax, diethylene glycol, and water at a volume ratio of 2:4:2:300 to obtain a depilatory solution, and spray the depilatory solution on the root of pig skin hair , Prefreeze the pigskin at 3°C ​​for 1.5 hours, freeze at -14°C for 28 minutes, thaw the pigskin at room temperature, thaw fully, pull out the pig hair, and rinse the surface hair;

[0022] (2) Degreasing of pigskin: Mix urotropine, nitroglycerin, table salt, polyferric sulfate, diethylene glycol monocaprylyl ether, and water at a weight ratio of 0.2:1:3:1:0.5:1:220, high-speed Shear emulsification to obtain a degreasing agent, immerse the pigskin in the degreasing agent, seal it, raise the temperature in the sealed tank to 60°C and keep it warm, pump the negative pressure to -0.025MPa, keep it for 38 minutes, put the processed pigskin in water Ce...

Embodiment 3

[0025] Embodiment 3, a kind of production method of waterproof pigskin upper leather, specifically:

[0026] (1) Pig skin hair removal: Mix sodium carboxymethyl cellulose, borax, diethylene glycol, and water at a volume ratio of 1.5:4:2:300 to obtain a depilatory solution, and spray the depilatory solution on the root of pig skin hair , Pre-freeze the pigskin at 2.4°C for 1.4 hours, freeze at -13°C for 26 minutes, thaw the pigskin at room temperature, thaw fully, pull out the pig hair, and rinse the surface hair;

[0027] (2) Degreasing of pigskin: Mix urotropine, nitroglycerin, table salt, polyferric sulfate, diethylene glycol monocaprylyl ether, and water in a weight ratio of 0.15:1:3:1:0.5:1:210, high-speed Shear emulsification to obtain the degreasing agent, immerse the pigskin in the degreasing agent, seal it, raise the temperature in the sealed tank to 58°C and keep it warm, pump the negative pressure to -0.023MPa, keep it for 36 minutes, put the processed pigskin in wat...

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Abstract

The invention relates to the technical field of animal fur processing, in particular to a production method for waterproof pig-skin shoe upper leather. Specifically, sodium carboxymethyl cellulose, borax, diethylene glycol and water are mixed to obtain depilation liquid, and pigskin is depilated; urotropine, nitroglycerin, salt, polyferric sulfate, diethylene glycol monooctyl ether and water are mixed to obtain a degreasing agent, and the pigskin is degreased; nitrocellulose, chlorinated paraffin, ethanol with the concentration being 80-82% and epoxy soybean oil are uniformly mixed to obtain a waterproof agent, and the pigskin is subjected to filling watertightness; the pigskin obtained through filling is hung and subjected to still standing under the environment that the humidity is relatively 50-52% and the temperature is 33-36 DEG C till the wet content of the pigskin is 18-20%; and the pigskin is dried. The production method for the waterproof pig-skin shoe upper leather is simple, the obtained pigskin has the excellent waterproofness, soft and full hand feelings, a certain elasticity and the good mercerizing sense, and the leather obtaining rate is 92.88% or above.

Description

technical field [0001] The invention relates to the technical field of animal fur processing, in particular to a production method of waterproof pigskin upper leather. Background technique [0002] my country is a big pig raising country, and the amount of pig raising accounts for about one-third of the world's total. Pig leather tanning occupies a very important position in my country's leather industry, ranking first in the world. It accounts for more than half of the total output. Although pig leather has high firmness, it has the disadvantages of large pores, uneven leather surface, rough leather surface, poor softness, and poor water resistance. At the same time, improving the softness, water resistance and surface smoothness of pigskin has positive significance for expanding the application range of pigskin and improving the application value of pigskin. Contents of the invention [0003] The purpose of the invention is to provide a production method of waterproof pig...

Claims

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Application Information

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IPC IPC(8): C14C1/06C14C5/00C14C9/00
CPCC14C1/06C14C5/00C14C9/00
Inventor 陈献军
Owner 安徽乐踏鞋业有限公司
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