Preparation process of high-physical-property cowhide base cloth

Abstract

The invention relates to the field of leather and discloses a preparation process of high-physical-property cowhide base cloth. The preparation process includes: blending, forming a chemical fiber net, forming a cowhide fiber net, and superimposing the chemical fiber net and the cowhide fiber net to form a net; the blending process refers to blending chemical fiber and cowhide fiber according to a weight ratio of 1:0.8-1:1.2, the process of forming the chemical fiber net sequentially includes opening, combing, lapping, pre-wetting, and pre-needling, the process of forming the cowhide fiber net refers to adopting airflow net forming or water flow net forming to make the cowhide fiber into the cowhide fiber net, the process of superimposing the chemical fiber net and the cowhide fiber net to form the net sequentially includes superimposing the nets, spunlacing, vacuum sucking, and drying, the chemical fiber is fiber formed by mixing polyester fiber and aramid fiber, and the aramid fiber accounts for higher than 80% of total weight of the mixed fiber. By the preparation process, physical performance of the cowhide base cloth is improved, and production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of leather, in particular to a preparation process of a high-physical bovine fiber leather base cloth. Background technique [0002] Leather is an indispensable category of production and daily necessities in human life, and is widely used in many fields such as clothing, home furnishing, automobiles, and public services. A large number of scraps of natural leather are produced in the production process of leather products, and the amount of scraps of natural leather is large. If it can be used twice, especially processed into cow fiber leather, it will produce Considerable wealth, and at the same time have positive significance for green energy conservation and environmental protection. [0003] The traditional regenerated leather is to crush all kinds of leather and animal skin scraps into powder, and then bond and press the powder into a whole piece of regenerated leather through adhesives or hot-melt fi...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned imitation cow leather bonded with the cow fiber leather base cloth and the polyurethane coating layer generally has disadvantages such as poor physical properties. There is a large difference in strength in each direction; the second is that normal pressure (3-15MPa) is usually used for spunlace reinforcement, and it is not easy to pierce through spunlace, thereby reducing the mechanical properties of the cow fiber leather base cloth; The interlayer bonding strength between fiber leather base fabric and PU film is low; Fourth, drying after spunlace requires a lot of energy, which consumes a lot of energy and has high production costs

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