Burnt discoloration synthetic leather and preparation method thereof

Abstract

The invention relates to a burnt discoloration synthetic leather. A preparation method of the burnt discoloration synthetic leather comprises the following steps of: coating a washing burnt discoloration resin on a dry-method and wet-method synthetic leather or a non-woven fabric, wherein the washing burnt discoloration resin comprises the following components in percentage by weight: 30%-50% of polyurethane resin, 1%-3% of silica matting powder, 8%-12% of micronized wax powder, 0.5%-3% of a plasticizer, 0.5%-2% of an organosilicone feeling agent, 10%-30% of butyl acetate and 20%-40% of N,N-dimethylformamide; rubbing the synthetic leather or the fabric with water to remove the micronized wax powder to form a surface layer of a cellular structure; and baking the leather or the fabric, then burning and embossing the leather or the fabric to prepare the burnt discoloration synthetic leather. The burnt discoloration resin has good physical characters, wearing resistance, scratch resistance and an excellent visual effect, and can be widely applied to occasions of shoes and cases with high requirements on the performance of synthetic leather.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to a brand-changing synthetic leather and a preparation method thereof. technical background [0002] As a substitute for genuine leather, polyurethane synthetic leather has a lower cost and its performance is close to or surpasses that of similar genuine leather products. Therefore, it is widely used in various fields such as clothing, luggage, footwear and home furnishing. With the improvement of people's living standards and aesthetic concepts, the traditional single-color synthetic leather products can no longer meet people's needs. Improving the appearance and texture of synthetic leather through surface modification has become an indispensable means in the production process of synthetic leather. Brand discoloration means that the surface of synthetic leather is discolored by high-temperature pressing with a certain pattern of molds to form a three-dimensional pattern with a ...

AI Technical Summary

Problems solved by technology

[0004]1) Wet-laid synthetic leather contains a large amount of wood powder and other fillers, and has an open cell structure, resulting in low strength and poor wear and scratch resistance. It is generally used as the middle layer of synthetic leather. If it is used alone as imprinted color-changing synthetic leather, it is difficult to meet the requirements when it is applied to shoes and bags that require high physical properties of synthetic leather.

2) The production process of ordinary wet branded synthetic leather determines that its color and surface pattern are relatively single, which cannot meet high aesthetic requirements

3) Ordinary wet branded synthetic leather contains a lot of wood powder and other fillers, resulting in insufficient burnt feeling on the branded part

However, wet-process synthetic leather is generally used for the middle layer of synthetic leather, and its strength is poor, so it is difficult to use directly