Manufacturing process of waterproof crazy horse leather

Abstract

The invention discloses a manufacturing process of waterproof crazy horse leather, and relates to the technical field of leather surface treatment. The process comprises the steps of material preparation, surface smoothing treatment, wet-process material treatment, wet-process base production, attachment and post-treatment to obtain the crazy horse leather, wherein a wet-process material comprises 30D polyurethane, 35D polyurethane, a DMF (dimethyl formamide) solvent and wood fiber powder, a produced wet-process material base uses guide cloth as a carrier, and the wet-process material base is stripped from the guide cloth and then bonded to cow split leather through a water-based adhesive. According to the process, the prepared wet-process base layer is attached to the waterproof split leather in a mold transfer manner, the damage to a waterproof layer on the leather surface caused by direct high-temperature coating is avoided, the number of bending times in effective waterproof use of the crazy horse leather is guaranteed, and compared with a traditional method, the number of bending times is increased by nearly one time and reaches 15000. Besides, the cow split leather can be used as a raw material for production, so that compared with a traditional method of using cow top grain leather, the production cost is greatly reduced, and the problem of raw material shortage in the industry is solved.

Description

technical field [0001] The invention relates to the technical field of leather surface treatment, in particular to a production process of waterproof crazy horse leather. Background technique [0002] Crazy Horse Leather is the name of a kind of leather-making process. The material is essentially cowhide. The technology originated in the United States and was later spread to the mainland through Taiwan. Crazy horse leather is divided into smooth and frosted leather effects. Crazy horse leather with good quality is rich in oil and feels excellent; while the oil layer is thinner, the friction effect of the leather surface is more obvious. [0003] Therefore, the characteristics of crazy horse leather are relatively obvious. Its messy and disordered leather surface effect, rough and atmospheric style, strong leather feel, and the color changing effect of the background color can be presented by pushing it with hands. It has good use value and practicality. At the same time, th...

AI Technical Summary

Problems solved by technology

[0008] By coating the resin prepared by the above method on the waterproof two-layer leather, the waterproof effect of the crazy horse leather has been increased, but because it is directly rolled on the waterproof two-layer leather, and then condensed and solidified, due to the high temperature roller coating will cause its The service life is shortened, which greatly reduces the number of times that Crazy Horse Leather can be effectively waterproofed.

Images