A kind of preparation technology of high physical property full water-based bovine fiber skin

Abstract

The invention relates to the technical field of leather manufacturing, which discloses a preparation process of high-physical all-water-based bovine leather, which sequentially includes a base cloth preparation process, a base cloth post-treatment process, and a film coating process; the base cloth preparation process includes the following steps: Chemical fibers and kraft fibers are used as raw materials, and the chemical fibers are pre-stabbed into chemical fiber webs by hydroentanglement after laying, and the kraft fibers are made into kraft fiber webs by air-laid or water-laid methods, and then the chemical fiber webs, kraft fibers After the mesh is stacked, the process steps of spunlace solidification, vacuum drying, and drying are made into a bovine fiber leather base cloth; the post-treatment process of the base cloth includes water-based PU The process steps of permeating and drying one side of the material; wherein, the depth of permeating one side of the water-based PU material in the post-treatment process of the base fabric is 1 / 3 to 2 / 3 of the thickness of the cow fiber leather base cloth. The invention improves the physical properties of the all-water-based bovine fiber leather and reduces the production cost.

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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