A kind of preparation technology of high physical properties cow fiber leather base cloth

Abstract

The invention relates to the technical field of leather, which discloses a preparation process of a high-physical cowhide leather base cloth, including a batching process, a chemical fiber netting process, a kraft fiber netting process, a chemical fiber net and a kraft fiber net. Web process; in the batching process, chemical fiber and kraft fiber are batched according to the weight ratio of 1:0.8 to 1:1.2; the chemical fiber web forming process includes opening, carding, web laying, pre-wetting, pre-wetting The process of thorning: in the kraft fiber net forming process, the kraft fiber raw material is made into a kraft fiber net by air-laid or water-flow-laid net; The process of spunlace, vacuum drying, and drying; wherein, the chemical fiber is a mixed fiber of polyester fiber and nylon fiber, and the nylon fiber in the mixed fiber accounts for more than 80% of the total weight of the mixed fiber. The invention improves the physical performance of the cow fiber leather base cloth and reduces the production cost.

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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