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A method for improving leather yield

A technology for leather and gray leather, applied in the field of improving the leather yield rate, can solve the problems of insufficient technology and failure to achieve expected effects, and achieve the effects of clear leather grain surface, good uniformity, and increased area yield rate

Active Publication Date: 2019-02-01
ZHEJIANG MINGXIN XUTENG LEATHER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The yield rate of existing home furnishing leather has always been a problem related to whether the company is profitable. Most factories have not formulated a set of plans to improve the yield rate of their own leather, or there are technical deficiencies that fail to achieve the expected results.

Method used

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all Example.

[0032] A kind of method for improving the leather yield of the present invention is as follows:

[0033] A method for improving leather yield, comprising the following steps:

[0034] (1) Soften the raw materials, restore the fresh skin state, and remove unnecessary components in fur processing. After the full-thick gray hide is separated from the first layer and the second layer through the peeling process, the second layer of gray hide is put into a tanning drum for deliming , softening, pickling; then add 5% glutaraldehyde tanning agent and rotate in the drum for 180min to carry out sufficient osmotic reaction until the leather core...

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Abstract

The invention discloses a method for improving yield of leather. The method for improving the yield of leather comprises the following steps: softening a raw material; recovering the state of fresh leather; removing ingredients not required in processing of fur; after a first layer and a second layer of an overall-thickness limed skin are separated by a splitting procedure, feeding the second layer of the limed skin in a tanning rotary drum for deliming, softening and pickling; then adding 5% of a glutaraldehyde tanning agent in the rotary drum, rotating for 180 minutes, and carrying out permeation reaction fully until a leather center becomes yellowish; adding 200% of water, and controlling the temperature to be 45 DEG C; adding 0.2% of a rewetting agent, rotating for 60 minutes, and then draining water; continuing adding 150% of water, and controlling temperature to be 45 DEG C; adding 2% of sodium formate and 0.3% of sodium bicarbonate, rotating for 30 minutes, and controlling the PH value to be 5.4+ / -0.1; adding 2.5% of acid proteinase, rotating for 120 minutes, and then draining the water; carrying out a retanning technology; dyeing household leather; and carrying out fat liquoring.

Description

technical field [0001] The invention relates to a method for manufacturing household leather, in particular to a method for improving the yield of leather. Background technique [0002] In this era of increasing emphasis on ecology and environmental protection, the leather industry will face severe challenges. In the domestic leather industry, the genuine leather mark eco-leather certification is actively promoted, and the content of related chemical substances that may exist in eco-leather must be strictly controlled within a limited range. Inside. [0003] The yield rate of existing home furnishing leather has always been a problem related to whether the company is profitable. Most factories have not formulated a set of plans to improve the yield rate of their own leather, or there are technical deficiencies that fail to achieve the expected results. . Contents of the invention [0004] The purpose of the present invention is to overcome the above-mentioned deficiencie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/08
CPCC14C3/08
Inventor 庄君新刘贤军吴儒伟
Owner ZHEJIANG MINGXIN XUTENG LEATHER IND CO LTD
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