Tanning method of nano SiO2 or TiO2 tanning agents

Abstract

The invention relates to a tanning method of a nanometer SiO2 or TiO2 tanning agent, which has the characteristics that bating leather blank or pickled leather blank is pretanned by a pretanning agent and mainly tanned by the nanometer SiO2 or nanometer TiO2 tanning agent or pretanned by other retanning agents, the leather blank of pig, ox, lamb, etc. is mainly tanned by the nanometer tanning agent or retanned by other tanning agents, the shrinking temperature of the resultant leather is higher than 95 DEG C, the appearance color is subalbous, the grain surface is flat and fine with soft hand feeling, fullness and elasticity, and all the physical mechanical indexes reach the industrial standards of free-chrome tanning leather. The finished leather has good bacteriostasis property, anti-mold property, air permeability, moisture permeability, anti-ultraviolet ageing performance and storage stability. The invention replaces the traditional chrome tanning with nanometer tanning, solves the problems of poor chrome resources and the pollution of trivalent chromium and hexavalent chrome to the human being and the environment, and develops a new path for tanning leather with the free-chrome tanning agents.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technology allows for creation of durable materials with improved properties such as flexibility, brush retention on hair shafts, anti bacteria ability, waterproof fasteners, high stretchiness, low breakdown pressure, long lifespan, etc., without harmful chemical substances like trichromate (TCA). These technical features make them ideal for use in industries that require these qualities including clothing manufacturing, medical applications, military uses, defense purposes, transportations, construction, and others where there are concerns about protective coatings containing potentially carcinogenic compounds called Trimethylamine(Tris) which can be released into our body through contact exposure during normal usage over time.

Problems solved by technology

This patents discusses two technical problem areas related to current chrome tanners - environmental concerns due to potential health hazards associated therewith. One area involves developing an improved chemical called tin oxide, while another focuses towards improving durability without causing harmful side reactions like greenhouse gas emissions from chrome tans. Current alternatives involve complex chemistry techniques involving multiple steps, resulting in increased costs and reduced efficiency.