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Corduroy leather and its production method

A technology for corduroy leather and a manufacturing method, applied to the field of corduroy leather and its manufacturing, can solve the problems of economic loss, waste, idleness, etc., and achieve the effects of avoiding waste, plump and soft texture, and improving leather quality and grade.

Inactive Publication Date: 2002-11-20
秦和平
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AI Technical Summary

Problems solved by technology

With the improvement of people's living standards, these low-grade products are gradually eliminated by the market, so a large number of second- and third-layer cow hide raw materials are idle and wasted, causing huge economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The manufacturing method of the corduroy leather mainly includes the following steps: skin softening—retanning—shaving—neutralization—dyeing and fatliquoring—drying—wrecking—grinding—polishing—roller coating—drying—fixing—trimming. The specific requirements and operations are as follows:

[0009] 1. The softening of the second and third layers of cowhide.

[0010] The liquid coefficient in the drum should be determined according to the degree of dryness and humidity of the skin, generally between 150-250‰, the water temperature is 45 degrees, the ammonia water is 1‰, the penetrating agent is 0.4‰, turn for 1-6 hours, wash with water at room temperature for 15 minutes and leave the drum .

[0011] 2. Retanning.

[0012] Add 200‰, 45°C water to the drum, add trivalent chromium solution (33‰ content) 10‰, turn for 1 hour to get out the drum for clean water.

[0013] 3. Shave evenly.

[0014] The purpose of shaving is to make the thickness of the leather uniform.

[00...

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PUM

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Abstract

The present invention relates to a corduory leather and its production method. It is a leather made up by using second and third layer blank leather of cowhide as main raw material, on the surface ofsaid leather the embossed weave can be distributed, and its production method includes the following steps: resoftening leather blank, retanning, uniformly cutting, neutralizing, dyeing, fallening, drying, softening, grinding, roll-coating and drying, in which the roll-coating agent is formed from (wt%) 5-20% of macromolecular biotin, 5-20% of polyurethane emulsion and 1-8% of casein. As comparedwith existent napped leather said invented corduroy leather possesses good plastic effect, beautiful appearance and high quality.

Description

technical field [0001] The invention relates to a cord suede leather and a manufacturing method thereof. The cord suede leather is leather made from animal skins, especially bovine two-layer and three-layer leather as main raw materials. Background technique [0002] Over the years, the second and third layers of cow leather, as well as various residual and sub-leathers with damaged leather surfaces, can only be processed into the monotonous traditional leather of "suede leather". The manufacturing method of suede leather mainly includes processes such as skin softening, retanning, shaving, neutralization, dyeing and fatliquoring, drying, softening, and leather grinding. The appearance and feel of suede leather are rough, the luster is dull, the texture is stiff, and the quality and grade are low. It can only be used to produce low-grade and low-priced products such as labor insurance shoes, labor insurance gloves, and big-toed shoes. With the improvement of people's living...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00
Inventor 秦和平
Owner 秦和平
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