High performance WPU superfine fiber synthetic leather and clean production method thereof

Abstract

Provided are a high performance WPU superfine fiber synthetic leather and a clean production method thereof; superfine fiber synthetic leather base cloth is impregnated through an impregnating tank filled with a shrinkage and rubbing liquid and then enters a continuous graining machine, and the superfine fiber synthetic leather base cloth is dried to obtain shrinkage-rubbed base cloth; a synthetic leather dry-process production line provided with a PUR scraping device is adopted, a WPU coating is scraped on release paper and is dried, a WPU film is formed on the release paper, then the WPU film is coated with PUR, then the coated WPU film is fitted with the shrinkage-rubbed base cloth, and the obtained productt is cooled and coiled and is placed and cured; after the release paper is stripped, the high performance WPU superfine fiber synthetic leather is obtained. With adoption of the shrinkage rubbing technology, the softness, air permeability and water vapor permeability of the superfine fiber synthetic leather base cloth are greatly improved; then through the composite technology of coating layer transferring with release paper and PUR scrapping, the WPU coating layer is composited on the superfine fiber synthetic leather substrate, and the WPU superfine fiber synthetic leather with soft hand feeling and good mechanical properties and use performance is obtained.

Description

technical field

[0001] The invention relates to the technical field of superfine fiber synthetic leather, in particular to a high-performance WPU superfine 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...