Trademark leather and preparation method thereof

Abstract

The invention belongs to the technical field of synthetic leather, and particularly relates to trademark leather and a preparation method thereof. The trademark leather provided by the invention comprises a top layer, a discoloration layer and a bonding layer, wherein the discoloration layer is prepared by the following raw materials in part by weight: 20 to 25 parts of aliphatic dry PU (Polyurethane) resin, 20 to 30 parts of DMF (Dimethyl Formamide), 17 to 20 parts of acetic ether, 3 to 5 parts of high-modulus PU resin particles, 5 to 8 parts of gaseous phase silica and 30 to 40 parts of polypropylene wax powder. The preparation method of the trademark leather is as follows: complying with the traditional dry method process, i.e., performing process procedures of coating a top layer, drying, coating a discoloration layer, drying, coating a bonding layer and drying; and the preparation method is characterized in that through adjusting the parameter setting of each coating, the trademark leather with low cost, clear patterns after rolling, obvious difference with base color, scratch resistance and abrasion resistance can be prepared, and can be used for stamping a branch LOGO, a character and a pattern and the like.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and in particular relates to trademark leather and a preparation method thereof. Background technique [0002] Trademark leather, also known as pressure-change PU, after the trademark leather is subjected to external pressure, the color of the leather surface changes, and the pattern color after hot pressing is darker than the original background color, with obvious differences, which enhances the visual effect , beautify the appearance of the product, can be embossed brand LOGO, text, patterns, etc., mainly used in high-end notebooks, notepads, trademark production, universal manuals, award certificates, business card books, business card bags, check holders, key cases, silver bags, passport bags, manager bags, leather gifts, etc. [0003] The high-quality trademark leather currently on the market adopts a wet process, and uses expensive color-changing resin as the bottom layer of the...

AI Technical Summary

Problems solved by technology

[0003] At present, the high-quality label leather on the market adopts wet process, and uses expensive color-changing resin as the bottom layer of label leather to achieve the effect of color change. The cost of raw materials is high and the production process is complicated.

However, the existing dry pressure-transformed trademark leather has poor pressure-transformation effect, and the color change and pressure-transition lines are not obvious, and the surface has poor wear resistance and scratch resistance.