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A kind of production process of anti-yellowing and anti-light split leather

A production process, the technology of two-layer leather, which is applied in the fields of leather/skin/leather/raw hide chemical treatment equipment, leather softening, leather impregnation, etc. The effect of yellowing resistance and light resistance, good abrasion and fading resistance, and simple and easy production method

Active Publication Date: 2019-11-19
漳州香洲皮革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] White and light-colored leather are objectively used in high-end gloves, shoes and automotive leather, etc. However, under the influence of various environmental factors during use, white and light-colored leather will turn yellow.
The occurrence of yellowing phenomenon, on the one hand, affects the aesthetic effect of light-colored leather to a large extent; on the other hand, yellowing of leather is also accompanied by aging, which affects the use effect of leather
[0003] At present, there have been some relevant reports on the research and development of anti-yellowing leather finishing agents in China, but the product cost is high, the quality is average, and it is not prevented in the production stage, so it cannot meet the needs of the domestic market. Therefore, the applicant provides an anti-yellowing and light-resistant The production process of the two-layer leather strengthens the performance of yellowing resistance and light resistance in the production stage

Method used

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  • A kind of production process of anti-yellowing and anti-light split leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A production process for anti-yellowing and light-resistant split leather, comprising the steps of:

[0044] Step 1, rehumidification: take the second layer of leather and put it in the drum, add 200% of 45°C water and 0.5% of Eusapon OC degreasing agent according to the weight of the leather to the drum, rotate for 40 minutes, and then add 0.5% Oxalic acid, rotate for 60 minutes, drain the drum, then add water to wash and drain twice;

[0045] Step 2, retanning: add 100% water at 25°C and 0.3% formic acid according to the weight of the leather to the drum, rotate for 30 minutes, then add 1.5% TJ-706 fatty aldehyde, rotate for 40 minutes, then add 2% aluminum Tannin, turn for 60 minutes;

[0046] Step 3, alkali extraction: add 50% water and 1% sodium formate according to the weight of the leather to the drum, rotate for 20 minutes, then add 0.5% sodium bicarbonate, rotate for 30 minutes, drain the drum, and then add water to carry out wash and drain;

[0047] Step 4,...

Embodiment 2

[0054] A production process for anti-yellowing and light-resistant split leather, comprising the steps of:

[0055] Step 1, rehumidification: take the second layer of leather and put it in the drum, add 150% of 40°C water and 0.3% of Eusapon OC degreasing agent according to the weight of the leather to the drum, rotate for 60min, and then add 0.3% Oxalic acid, rotate for 80 minutes, drain the drum, then add water to wash and drain twice;

[0056] Step 2, retanning: add 50% water at 20°C and 0.1% formic acid according to the weight of the leather to the drum, rotate for 40 minutes, then add 1% TJ-706 fatty aldehyde, rotate for 50 minutes, then add 1% aluminum Tannin, turn for 80 minutes;

[0057] Step 3, alkali extraction: add 40% water and 0.6% sodium formate according to the weight of the leather to the drum, rotate for 30 minutes, then add 0.2% sodium bicarbonate, rotate for 40 minutes, drain the drum, and then add water to carry out wash and drain;

[0058] Step 4, neutr...

Embodiment 3

[0065] A production process for anti-yellowing and light-resistant split leather, comprising the steps of:

[0066] Step 1, rehumidification: take the second layer of leather and put it in the drum, add 300% of 50°C water and 1% of Eusapon OC degreasing agent according to the weight of the leather to the drum, rotate for 30min, and then add 1% Oxalic acid, rotate for 50 minutes, drain the drum, then add water to wash and drain twice;

[0067] Step 2, retanning: add 180% of 30°C water and 0.8% formic acid according to the weight of the leather to the drum, rotate for 20 minutes, then add 3% TJ-706 fatty aldehyde, rotate for 30 minutes, then add 5% aluminum Tannin, turn for 50 minutes;

[0068] Step 3, alkali extraction: add 80% water and 2% sodium formate according to the weight of the leather to the drum, rotate for 10 minutes, then add 0.8% sodium bicarbonate, rotate for 20 minutes, drain the drum, and then add water to carry out wash and drain;

[0069] Step 4, neutraliza...

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Abstract

The invention relates to a production technique of xanthochromia-resisting and illumination-resisting two-layer leather, and belongs to the technical field of leather. The production technique of the xanthochromia-resisting and illumination-resisting two-layer leather includes steps of taking two-layered leathers, and orderly performing rewetting, retanning, alkali extraction, neutralizing, dyeing, fat liquoring, fixation, drying, softening, leather grinding, milling to obtain the xanthochromia-resisting and illumination-resisting two-layer leather. The xanthochromia-resisting and illumination-resisting two-layer leather has the advantages of being excellent in stretching performance, good in wear and fading resistance, good in waterproof property, and excellent in xanthochromia resistance and illumination resistance.

Description

technical field [0001] The invention belongs to the technical field of leather, and in particular relates to a production process of a yellowing-resistant and light-resistant split leather. Background technique [0002] White and light-colored leathers are objectively used in high-end gloves, footwear, and automotive leather. However, under the influence of various environmental factors during use, white and light-colored leathers will turn yellow. The occurrence of yellowing phenomenon, on the one hand, affects the aesthetic effect of light-colored leather to a large extent; on the other hand, yellowing of leather is also accompanied by aging, which affects the use effect of leather. [0003] At present, there have been some relevant reports on the research and development of anti-yellowing leather finishing agents in China, but the product cost is high, the quality is average, and it is not prevented in the production stage, so it cannot meet the needs of the domestic mark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/08C14C3/16C14C3/08C14C9/02C14B1/40C14B1/46C14B1/58C14C1/00C14C15/00D06P3/30D06P5/04
CPCC14B1/40C14B1/46C14B1/58C14C1/00C14C1/08C14C3/08C14C3/16C14C9/02C14C15/00D06P3/30D06P5/04
Inventor 许维奇
Owner 漳州香洲皮革有限公司
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