Finishing method of non-permeable cattle corrected grain leather

Abstract

The invention provides a finishing method of non-permeable cattle corrected grain leather, which comprises the following steps: grinding the surface, removing dust, precoating, carrying out vacuum drying, carrying out secondary surface grinding, carrying out secondary dust removal, cleaning the surface, brushing a bottom coat, embossing, spraying a surface coat, spraying gloss oil, carrying out secondary embossing, ironing and the like. According to the corrected grain leather prepared by the finishing method provided by the invention, the grain has similar flatness and fineness to the whole grain as well as favorable defect covering power, and the leather body is flat, soft, full and resilient, and has the advantages of even surface gloss, uniform color and no greasiness; and the leather body also has the advantages of high smoothness, no crease, no loose grain, no crack grain, no decolorization and no slurry cracking. The invention solves the problems of diffused coating, slurry cracking, exposed ground, crude and creased grain and the like in the non-permeable defective cattle corrected grain leather, and is suitable for finishing corrected grain leather.

Description

technical field [0001] The invention belongs to a leather finishing method, in particular to a finishing method for imperviously dyed yellow cattle trimmed leather. Background technique [0002] As a natural material, leather has some congenital defects in its grain layer, and leather that has been trimmed can fully improve its utilization efficiency. For the crust leather that is dyed through the whole body, the processing will be easier because the color of the inside and outside of the pre-treatment is basically the same. In the prior art, when processing non-transparent and defective yellow cattle shaved leather, the crust leather is only surface dyed, and the leather heart is extremely light blue. After grinding, the surface of the crust leather is whitish, and the fibers are brittle and hard, and the fluff is thick. In the process of coating, there will be poor leveling of the coating, discontinuous film formation, often causing coating astigmatism, cracking, and bott...

AI Technical Summary

Problems solved by technology

In the prior art, when processing non-transparent and defective yellow cattle shaved leather, the crust leather is only surface dyed, and the leather heart is extremely light blue. After grinding, the surface of the crust leather is whitish, and the fibers are brittle and hard, and the fluff is thick. In the process of coating, there will be poor leveling of the coating, discontinuous film formation, often causing coating astigmatism, cracking, and bottom exposure. When used in shoemaking, it is easy to cause coating peeling and substrate roughness. Not only can it not be used It is used in the production of shoes, and the processing process is labor-intensive and material-intensive, so it can only be scrapped, resulting in huge losses.

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