A kind of production process of tpu composite fabric imitating dry process leather

Abstract

A production process of a TPU composite fabric imitating dry-process leather successively includes the steps of: surface treatment of a base cloth, roller coating for priming the base cloth, calendering, foam slurry printing, lamination of a TPU thin film, and a drying and foaming process. The foam slurry contains a microsphere foamer. In the process, by hot-press-laminating the TPU thin film on the surface of the fabric and reasonably utilizing the foam temperature zone of the microsphere foamer, the foamer is not foamed in the early-stage of the production process and is foamed after the process is completed, so that the product has stereoscopic grains that are similar as the surface of dry-process leather, wherein the hand feel, glossiness and other physical and chemical indices of the fabric are not influenced. The fabric has a fluffy and soft hand feel, is high in anti-wear and anti-scraping properties, has natural surface grains and variable styles. The composite fabric breaks through limit of fixed grains on common release paper, wherein variable styles and optional grains are achieved by means of gravures in different grain patterns. In addition, by controlling the addition ratio of the microsphere foamer, the degree of the stereoscopic sense of the surface of the fabric can be regulated, so that the fabric has high selection freedom degree. The production process is simple and is low in production cost.

Description

technical field [0001] The invention relates to a fabric, in particular to a production process of a TPU composite fabric imitating dry-process leather. Background technique [0002] At present, the production of leather fabrics only has dry leather production technology, which has been formed in the 1980s and 1990s. The dry production process is to apply the coating agent on the sheet carrier (release paper), form a continuous and uniform film after drying, and then apply the adhesive on the film, and the fabric (or wet method) The bottom skin) is superimposed, and then dried, the release paper and the leather are peeled off, and the coating agent (including the adhesive layer) film will be transferred from the release paper to the fabric (or leather). The dry production process is a relatively complex process involving changes in both chemical and physical properties. [0003] Release paper, also known as transfer paper, accepts a liquid coating agent and enters the oven...

AI Technical Summary

Problems solved by technology

my country's leather release paper market has long been monopolized by several companies in these few countries. Therefore, the price of release paper remains high. At present, release paper accounts for more than 20% of the production cost of synthetic leather technology, and the production cost is relatively high. high