A kind of clean production method of tpo modified tpu synthetic leather

Abstract

The invention relates to a clean production method of TPO modified TPU synthetic leather. The cleaning production method includes: using a calendaring production line to add foaming-layer materials into a kneading machine, kneading, feeding the kneaded foaming-layer materials into an internal mixer, performing internal mixing, feeding the mixed materials into a plasticator, plasticating, feeding the plasticated materials into a calendaring machine, calendaring into a forming-layer thin film, allowing the foaming-layer thin film to attach to base cloth, and reeling to obtain a base; adding surface-layer materials into the kneading machine, kneading, feeding the kneaded surface-layer materials into an internal mixer, performing internal mixing, feeding the mixed materials into a plasticator, plasticating, feeding the plasticated materials into a calendaring machine, calendaring into a surface-layer thin film, allowing the surface-layer thin film to attach to the base, foaming in a foaming drying box, performing knurling or pattern sucking, cooling, and reeling to obtain the TPO modified TPU synthetic leather. The clean production method has the advantages that no organic solvents are used in the method, so that solvent pollution is avoided; the method is simple to operate and stable in process; the produced TPO modified TPU synthetic leather is excellent in mechanical performance, good in quality, wide in hardness regulating range and low in cost.

Description

technical field [0001] The invention relates to a production method of synthetic leather, in particular to a clean production method of TPO modified TPU synthetic leather. Background technique [0002] The main products of the synthetic leather industry include artificial leather, synthetic leather and microfiber synthetic leather. These products are composite materials that simulate the tissue structure and performance of natural leather and can be used as natural leather substitutes. Usually, polyurethane (PU) and polyvinyl chloride (PVC) microporous coatings are mostly used to simulate the grain layer of natural leather, and non-woven or woven fabrics are used as the base material to simulate the mesh layer of natural leather. In the usual classification, those based on woven fabrics are called artificial leather, those based on non-woven fabrics are called synthetic leather, and those based on superfine fiber base cloth are called superfine fiber synthetic leather. Used...

AI Technical Summary

Problems solved by technology

However, the current TPU synthetic leather has the following problems: First, the optional hardness range of TPU used for synthetic leather production is usually between 65A and 95A (measured by Shore A durometer), and there is no industrialized TPU resin lower than 65A, nor That is to say, there is no optional TPU resin for the production of soft TPU synthetic leather; second, the high price of TPU resin makes it difficult to promote TPU synthetic leather products; third, a single TPU is prone to sticking to rollers during calendering , making it difficult to produce