Method for producing high-performance suede superfine fiber synthetic leather for clothes

Abstract

The invention discloses a method for producing high-performance suede superfine fiber synthetic leather for clothes. Superfine fiber synthetic leather base cloth is used as a base material; by adopting the technologies of combined hydrolysis of diethanol amine and multiple enzyme preparations, surface adsorption modification of hydrolyzed gelatin and cross-linking immobilization of glutaraldehyde, the water vapor permeability of the suede superfine fiber synthetic leather is improved; the superfine fibers are fully dispersed and lubricated by adopting a combined greasing technology of multiple greasing agents, so that the softness and the handfeel property of the suede superfine fiber synthetic leather are improved; by adopting a one-bath dyeing technology of a metal complex dye and a disperse dye in a ratio of 1:1 and a color fixing technology of a macromolecular color fixing agent, the luster and the dyeing fastness of the suede superfine fiber synthetic leather are improved; and byadopting a technology of combining mechanical raising and cutting, the 'writing effect' of the suede of the suede superfine fiber synthetic leather is improved, and the suede superfine fiber synthetic leather is endowed with good chamois appearance. Under the condition that the conventional physical and mechanical properties are met, the dry scraping fastness of the surface color of the produced suede superfine fiber synthetic leather is more than or equal to level 4, the wet scraping fastness of the surface color is more than or equal to level 3, and the water vapor permeability is more thanor equal to 1.5mg / cm<2>.h.

Description

technical field [0001] The invention relates to a production process of superfine fiber synthetic leather, in particular to a production method of high-performance suede superfine fiber synthetic leather for clothing. Background technique [0002] Natural leather resources are limited, and the production process will produce relatively large pollution. The development of artificial synthetic leather with excellent performance has become the pursuit of human beings. Among them, the superfine fiber non-woven fabric with three-dimensional network structure is used as the reinforcing material, and the superfine fiber synthetic leather obtained by impregnating polyurethane is close to the microfiber in terms of internal microstructure, appearance texture, physical properties and people's wearing comfort. Made of natural leather. [0003] The development of my country's microfiber synthetic leather industry has only been in the course of more than ten years, and it has developed ...

AI Technical Summary

Problems solved by technology

(2) The softness and feel of suede microfiber synthetic leather are far from those of natural leather. This is mainly because the microfiber synthetic leather is based on superfine fiber non-woven fabric and impregnated with polyurethane slurry to form a porous surface. Composite materials with a structure, the dispersion of microfibers is far less than that of natural leather; (3) the dyeability of suede microfiber synthetic leather is poor, and the dyeing fastness is not high

This is mainly because the superfine fiber synthetic leather mainly includes two components: superfine fiber nonwoven fabric and impregnated and filled polyurethane. The structures and properties of these two components are very different. The dyeing requirements of the ingredients, and there are very few active groups on the superfine fiber synthetic leather fiber, and the dyeing mainly relies on the deposition of the dye itself to color the fiber. Therefore, most dyes are difficult to dye, and their washing fastness is very poor. (4) The fiber density of suede superfine fiber synthetic leather is much smaller than that of natural leather, resulting in scattered piles of suede superfine fiber synthetic leather, insufficient density, and suede "writing effect". "not obvious