One-bath low-temperature desizing, refining and pre-bleaching method for cotton woven fabrics

Abstract

The invention discloses a one-bath low-temperature desizing, refining and bleaching pretreatment method for cotton woven fabrics, adding 1-5 g / L of biological enzyme for desizing and 3-8 g / L of biological enzyme for refining into the one-bath system , hydrogen peroxide 2-6 g / L, bleach activator 1-4 g / L, chelating agent 2-6 g / L, auxiliary agent 0.5-4 g / L, adjust the pH to 6.0-7.5, and adjust the fabric to a bath ratio of 1 : 10-100 put into the dyeing bath, heat up to 50-70°C at a heating rate of 0.5-2°C / min, keep warm for 40-120min, and finally wash, dry or air-dry the fabric. In the present invention, biological enzymes for desizing, biological enzymes for refining and bleaching activators are added to the pretreatment system of cotton woven fabrics, so that the desizing, refining and bleaching of cotton woven fabrics can be carried out in one bath under low temperature conditions, avoiding strong damage to the fabrics , shorten the dyeing and finishing process of cotton woven fabrics, reduce energy consumption and improve production efficiency.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and relates to a one-bath low-temperature desizing, refining and bleaching pretreatment method for cotton woven fabrics. The method is suitable for low-temperature desizing, refining and bleaching pretreatments of pure cotton woven fabrics or cotton-containing woven fabrics . Background technique [0002] Cotton fabric is a type of textile fabric that currently occupies a large market share. Among them, cotton woven fabrics are used in shirts, suits, trousers, home textiles and other fields because of their stable size and shape and comfortable wearing. However, in the weaving process of cotton woven fabrics, in order to enhance the spinnability of the fabrics, warp sizing is required, so that the fabrics have a size of about 8%, and the cotton fibers themselves contain oil, wax paper, ash, pectin, lignin, pigments, etc. Natural impurities, the above-mentioned sizing or impurities n...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the bleaching of pure cotton woven fabrics and cotton-containing woven fabrics needs to be carried out under high temperature alkaline conditions, the reaction conditions are severe, the fibers are seriously damaged, the energy consumption is large, the cost is high, and it is not conducive to enzymatic desizing , refining and hydrogen peroxide bleaching one-bath treatment, providing a milder and more efficient one-bath treatment method, so as to protect the fiber from damage, shorten the process flow, and save energy

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