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A finishing method for improving the adhesion between coating and crust leather

A technology of fit and rough leather, applied in leather surface treatment, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. Problems such as poor deformation ability, poor adhesion of coating and raw leather, and reduced aesthetics of leather products, to achieve the effect of increasing the yield of leather, low surface tension, and small shrinkage force

Active Publication Date: 2021-11-23
XINGYE LEATHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating formed by anionic and cationic finishing agents has strong peel strength, the coating has poor ability to adapt to the deformation of crust leather, and the adhesion between coating and crust leather is poor. When leather products (leather shoes, leather bags, etc.) When repeated bending or stretching, it is easy to cause the coating to peel and reduce the aesthetics of leather products

Method used

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Examples

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Embodiment Construction

[0018] The present invention is specifically described below through specific embodiments, so that how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It is necessary to point out this embodiment here. It is only used to further illustrate the present invention, and should not be construed as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the content of the present invention above.

[0019] Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the reagents and products used are also commercially available. Various processes and methods not described in detail are conventional methods well known in the art, and the sources, trade names and necessary listing of components of the reagents used are ...

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Abstract

The invention relates to the field of tanning chemistry and engineering technology, and provides a finishing method for improving the bonding degree of the coating layer and the crust leather. The uncharged nonionic polyurethane resin and the nonionic oil wax additive are selected as the main materials of the finishing agent. By reducing the surface tension of the coating agent, improving its leveling and permeability, balancing the process, grasping the priority of each stage and operation, improving the adhesion between the coating and the crust leather, so that the finishing agent forms on the surface of the crust leather. An ideal film, the coating is not easy to peel after repeated bending or stretching, and the non-ionic oil wax additive has a good filling and covering effect, which can improve the flatness and fineness of the grain surface of the crust leather, cover the grain defect of the crust leather, and improve the quality of the crust leather. Leather grade rate and utilization rate.

Description

technical field [0001] The invention relates to the technical fields of tanning chemistry and engineering, in particular to a finishing method for improving the adhesion between coating and crust leather. Background technique [0002] The lamination of the coating and the crust leather not only requires the coating to have a strong peel strength and is not easy to fall off; but also requires the coating to be able to adapt to the deformation of the crust leather and not easy to peel. The formation of the coating is related to factors such as the state of the crust leather, finishing materials, processing technology, equipment and the external environment. According to the state of the crust leather, select the appropriate finishing material and design a reasonable finishing process, so that the coating can be mechanically blended, physically Adsorption, chemical bonding, interdiffusion, etc. are firmly attached to the surface of the crust leather, and it is not easy to peel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C11/00
Inventor 李银生王小卓柯俊雄姚君良陈军温会涛
Owner XINGYE LEATHER TECH CO LTD
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