Cold pad-batch pre-treatment method for cotton textile

Abstract

The invention relates to a cold pad-batch pre-treatment method for a cotton textile and belongs to a spinning and printing pre-treatment process technology. According to the cold pad-batch pre-treatment method, a method for changing a cold pad-batch process path of the cotton textile and preparing alkali liquid and bleaching liquid in the cold pad-batch process of the cotton textile is adopted; the cotton textile is sequentially padded by the alkali liquid formed by mixing a high-ratio alcohol organic solvent with sodium hydroxide, and the bleaching liquid formed by mixing the high-ratio alcohol organic solvent with hydrogen peroxide, and then the cotton textile is subjected to pad-batch pre-treatment so as to reduce the water use amount to the greatest extent and improve a treatment effect. The method is simple in process and good in treatment effect and has the characteristics of good capillary effect, high whiteness, good quality, high softness and good glossiness; favorable conditions are created for subsequent dyeing processing and the use amount of water and chemical reagents is reduced; the alcohol organic solvent is recycled so that the burden of sewage treatment of enterprises is reduced greatly; the cold pad-batch pre-treatment method for the cotton textile is a clean production process meeting the environmental requirements and has very high social and economic benefits.

Description

technical field [0001] The invention relates to a cold pad-batch pretreatment method for cotton-type textiles, which belongs to the pretreatment technology of textile printing and dyeing. Background technique [0002] In the traditional pretreatment process of cotton-type textiles, hot alkali bath technology is generally used, that is, hot alkali is used to swell and remove the size on cotton-type textiles to achieve the purpose of desizing, and then use concentrated alkali at high temperature. Next, decompose the pectin, wax, cottonseed hulls, lignin and other impurities contained in the cotton-type textiles to achieve the purpose of refining, and finally use bleaching agents such as hydrogen peroxide to decolorize the colored substances on the cotton-type textiles to improve its whiteness. Degree, in order to achieve the purpose of bleaching. Therefore, in the traditional hot alkali bath pretreatment process, it generally needs to go through three steps of desizing, scour...

AI Technical Summary

Problems solved by technology

However, its disadvantage is that the process increases the amount of alkali, and does not fundamentally reduce the pollution to the environment

However, its disadvantages are that the cost of the method is high, the reagent consumption is large, and the pollution is large.

However, its disadvantage is that this method needs to use specific biological enzymes for treatment, the cost is high, and the process is complicated

This method adopts the hydrogen peroxide / activator bleaching system constructed by alkanoyloxybenzenesulfonate bleaching activator to carry out cold pad-batch on textiles, which can improve the whiteness of fabrics, but its disadvantage is that the method has high cost and complicated process , did not fundamentally solve the problems of large water consumption and environmental pollution

This method adopts the method of firstly treating the cotton fabric with atmospheric pressure plasma, then padding, scouring, enzyme cold pad-batch, and finally bleaching, which can improve the fabric treatment effect, but its disadvantage is that the process of this method is relatively complicated and expensive.

This method uses special alkali agent and auxiliary agent to pre-treat the fabric with cold pad-batch, which achieves the effect of non-steaming cold-pad-batch treatment and reduces energy consumption, but its disadvantage is that this method does not fundamentally solve the problem of pretreatment Problems of large water consumption and serious pollution