Preparation process of fully water-based cattle hide fiber leather with high physical properties

Abstract

The invention relates to the technical field of leather manufacture and discloses a preparation process of fully water-based cattle hide fiber leather with high physical properties. The preparation process sequentially comprises a base cloth preparation process, a base cloth aftertreatment process and a film covering process, wherein the base cloth preparation process comprises process steps as follows: chemical fiber and cattle hide fiber are taken as raw materials respectively, the chemical fiber is lapped and then spunlaced in advance into a chemical fiber net, a cattle hide fiber net is prepared from the cattle hide fiber with an air laying or waterflow net formation method, then, the chemical fiber net and the cattle hide fiber net are stacked for spunlacing curing, vacuum suction anddrying, and cattle hide fiber leather base cloth is prepared; the base cloth aftertreatment process comprises process steps as follows: single-sided loading, seepage and drying of a water-based PU material are performed on a PU film binding surface of the cattle hide fiber leather base cloth, wherein the single-sided seepage depth of the water-based PU material in the base cloth aftertreatment process is 1 / 3-2 / 3 of the thickness of the cattle hide fiber leather base cloth. The physical properties of the fully water-based cattle hide fiber leather are improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of leather manufacturing, in particular to a preparation process of high physical property full water-based bovine fiber leather. 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 throu...

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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