White anti-yellowing cow split leather and production method thereof

A production method, anti-yellowing technology, applied in dyeing, leather dipping, small raw hide/big raw hide/leather/fur treatment, etc., can solve problems affecting leather performance, leather quality, yellowing resistance, etc., to achieve Plump and round feel, shortening time of soaking in water, not easy to fade

Active Publication Date: 2022-03-22
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] The existing light-colored cow split leather, especially very light and white leather, is not resistant to yellowing and is easy to age during use, resulting in serious powder loss. After powder loss, it will not only affect the quality of the leather, but also It will affect the performance of leather, so it is particularly important to study the white anti-yellowing cow split leather and its production method

Method used

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  • White anti-yellowing cow split leather and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation method of white anti-yellowing cow split leather comprises the following steps:

[0052] The wet blue leather is subjected to rewetting → primary retanning → alkaline extraction → secondary retanning → primary dyeing → main fatliquoring → secondary dyeing → laminating → drying → softening → smoothing → drumming, specifically:

[0053] Step 1, rehumidification: put the wet blue hide in the drum, add 200% water, 0.2%-0.4% rehumidifier Usabang W, and 0.5% degreasing Youshabang OC, run for 60min, add 1.0% acid softening enzyme TJ-A489, 1.0% ammonium bisulfate, run for 120min, add 0.5% formic acid, run for 40min, add 1.5% anti-spot agent TJ-A9811, Run for 60 minutes, add 1.0% oxalic acid, run for 60 minutes, drain, add 300% water, wash with water and drain to get wet leather;

[0054] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 100% water and 0.5% formic acid into the drum, adjust the pH to 2.8-3.2, run for 40 minutes...

Embodiment 2

[0061] The preparation method of white anti-yellowing cow split leather comprises the following steps:

[0062] The wet blue leather is subjected to rewetting → primary retanning → alkaline extraction → secondary retanning → primary dyeing → main fatliquoring → secondary dyeing → laminating → drying → softening → smoothing → drumming, specifically:

[0063] Step 1, rehumidification: put the wet blue hide in the drum, and add 150% water, 0.2% rehumidifying agent Ushabang W, and 0.4% degreaser Ushabang in sequence according to the mass percentage of the wet blue hide Bang OC, run for 55min, add 0.8% acid softening enzyme TJ-A489, 0.8% ammonium bisulfate, run for 115min, add 0.4% formic acid, run for 35min, add 1.4% anti-spot agent TJ-A9811, run for 55min, Add 0.9% oxalic acid, run for 55 minutes, drain, add 250% water, wash with water and drain, and get wet leather;

[0064] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 95% water and 0.4% ...

Embodiment 3

[0071] The preparation method of white anti-yellowing cow split leather comprises the following steps:

[0072] The wet blue leather is subjected to rewetting → primary retanning → alkaline extraction → secondary retanning → primary dyeing → main fatliquoring → secondary dyeing → laminating → drying → softening → smoothing → drumming, specifically:

[0073] Step 1, rehumidification: put the wet blue hide in the drum, and add 250% water, 0.4% rehumidifying agent Ushabang W, and 0.6% degreaser Ushabang in sequence according to the mass percentage of the wet blue hide Bang OC, run for 65min, add 1.2% acid softening enzyme TJ-A489, 1.2% ammonium bisulfate, run for 125min, add 0.6% formic acid, run for 45min, add 1.6% anti-spot agent TJ-A9811, run for 65min, Add 1.1% oxalic acid, run for 65 minutes, drain, add 350% water, wash with water and drain, and get wet leather;

[0074] Step 2, primary retanning: according to the mass percentage of wet blue leather, add 105% water and 0.6%...

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Abstract

The invention relates to a white anti-yellowing cow split leather and a production method thereof, belonging to the technical field of leather production. The production method of the white anti-yellowing bovine split leather comprises the following steps: sequentially rewetting the wet blue leather→first retanning→alkali extraction→secondary retanning→first dyeing→main fatliquoring→secondary dyeing→ Lamination→drying→softening→skin grinding→drum breaking to obtain the white anti-yellowing cow split leather. The white cow split leather produced by the invention does not lose powder during use, has high quality and excellent performance.

Description

technical field [0001] The invention belongs to the technical field of leather production, and in particular relates to a white anti-yellowing cow split leather and a production method thereof. Background technique [0002] The existing light-colored cow split leather, especially very light and white leather, is not resistant to yellowing and is easy to age during use, resulting in serious powder loss. After powder loss, it will not only affect the quality of the leather, but also It will affect the performance of leather, so the research on white anti-yellowing cow split leather and its production method is particularly important. Contents of the invention [0003] The object of the present invention is to solve the deficiencies of the prior art, and to provide a white anti-yellowing cow split leather and its production method. The white cow split leather produced by the method does not lose powder during use, and the quality is high-grade. Excellent performance. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/08C14C1/04C14C3/04C14C3/08C14C3/10C14C3/28C14C9/02D06P1/673D06P1/653D06P3/32
CPCC14C1/08C14C1/04C14C3/04C14C3/08C14C3/10C14C3/28C14C9/02D06P1/002D06P1/673D06P1/6533D06P3/32
Inventor 雷丙南林汉彬陈启明杨俊昇
Owner 漳州香洲皮革有限公司
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