A kind of high-performance tpu superfine fiber synthetic leather and its clean production method

Abstract

The invention provides high performance TPU superfine fiber synthetic leather and a cleaner production method thereof. The method comprises the following steps: a piece of superfine fiber synthetic leather base cloth is dipped by a dipping tank which contains shrinking and boarding liquid, the synthetic leather base cloth enters a continuous type boarding machine, and a piece of boarding base cloth is obtained; a calendering production line is used, calendering materials are thrown into a high speed kneader for mixing, after mixing, plastication and calendering of the materials, the materials and a piece of release paper are laminated, in order to obtain a release paper laminated TPU film; a synthetic leather dry method production line with a piece of PUR scraping equipment is used, PUR is scraped on the release paper laminated TPU film, the boarding base cloth is attached, the release paper is peeled, and the product is obtained. Shrinking and boarding technology is used, in order to greatly improve flexibility, permeability and moisture permeability of the superfine fiber synthetic leather base cloth; the scraping and lamination technology of release paper transferred coating and reaction type polyurethane hot melt adhesive is used, the thermoplastic polyurethane calendering film is laminated on the superfine fiber synthetic leather base material in order to obtain the TPU superfine fiber synthetic leather with soft hand feeling, mechanical properties and good usage performance.

Description

technical field

[0001] The invention relates to the technical field of ultrafine fiber synthetic leather, in particular to a high-performance TPU ultrafine fiber synthetic leather and a clean production method thereof. Background technique

[0002] Due to the limited resources of raw leather used to produce natural leather, and the production of natural leather is a process of high energy consumption and high pollution, it will bring a huge pollution load to the environment. In recent years, developed countries such as the European Union have also proposed new standards for the safety of natural leather itself, strictly restricting the presence of toxic chemicals such as Cr(VI), azo dyes, pentachlorophenol (PCP) and free formaldehyde in natural leather. . From the perspective of raw leather resources, environmental protection, product safety and market, the production and use of natural leather are facing great challenges.

[0003] For the above reasons, countries all over...