Method for producing refractive PU synthetic leather

Abstract

The invention relates to a method for producing polyurethane (PU) synthetic leather, in particular to a method for producing refractive PU synthetic leather. According to the method for producing the refractive PU synthetic leather, the prepared refractive PU synthetic leather has exquisite grains, soft glossiness, flat shape and good reflective glossiness. The method comprises the following steps of: selecting materials, conveying release paper to a No. 1 coating head, coating a layer of surface material, conveying the release paper to a No. 2 coating head, coating a layer of bottom material on the surface material, preheating the treated release paper to combine a base surface material and the release paper coated with the surface material and the bottom material, drying in an oven to obtain a dry semi-finished product, embossing the dry semi-finished product through a pair of embossing rollers, cooling the embossed semi-finished product, coiling, and thus obtaining a finished product.

Description

technical field [0001] The invention relates to a production method of PU synthetic leather, in particular to a production method of refractive PU synthetic leather. Background technique [0002] Due to the constraints of natural conditions and the strengthening of animal protection awareness in countries around the world, especially the strengthening of environmental protection awareness, the use of natural leather is decreasing year by year. PU synthetic leather has the advantages of strong wear resistance, good strength and toughness, good oil resistance, and high cutting rate. It has become the best substitute for natural leather. Wider and wider, to a large extent made up for the shortage of animal skins on the tanning industry. [0003] The production process steps of traditional PU synthetic leather are: (1) Prepare polyurethane slurry: the viscosity of the slurry is required to be relatively high, and generally should be controlled at 7000-9000Pa·s. The prescriptio...

AI Technical Summary

Problems solved by technology

[0004] The PU synthetic leather produced by the traditional PU synthetic leather production process has disadvantages such as poor gloss, poor refraction effect, and unclear lines. PU synthetic leather, which gives people a multi-layered aesthetic feeling, has become an inevitable trend of market development.