Pure-cotton fabric biological enzyme scouring and bleaching one-bath process

Abstract

The invention discloses a pure-cotton fabric biological enzyme scouring and blenching one-bath process. The process comprises the following steps: preprocessing a piece of gray fabric in a heater, then scouring and bleaching the gray fabric in an enzyme oxygen scouring and bleaching solution, neutralizing and washing the gray fabric by utilizing organic acid, washing the gray fabric by utilizing cold water, dewatering the fabric, and drying the fabric by utilizing a drying machine. The capillary effect, whiteness and color yield of a pretreatment semi-finished product are better than those of a traditional alkaline agent scouring and bleaching process; by adopting the low-bath-ratio process technology, the consumption of water, electricity and vapor can be effectively reduced, and the discharge of waste water can be reduced; by adopting the bio-degradation technology, the damage of chemical assistants such as caustic soda, a penetrating agent, hydrogen peroxide stabilizer, a chelating dispersion agent used in the traditional high-temperature alkaline scouring process to cloth can be avoided, a great amount of hot water in the later washing step is not needed, and only the biological enzyme is used for neutralizing washing; the biological enzyme is toxic-free and easy to biologically degrade, so that the comprehensive benefit is obvious.

Description

technical field [0001] The invention relates to a pretreatment process of pure cotton knitted fabrics, in particular to a one-bath process of biological enzyme boiling and bleaching of pure cotton knitted fabrics. Background technique [0002] From the perspective of the process flow, although the traditional two-step process of boiling and bleaching has good impurity removal effect and wool effect on cotton fabrics, the process is long, the energy consumption is high, the fabric feels poor, the strength loss is large, and the efficiency is the lowest; while the traditional Although the one-bath alkaline boiling process effectively shortens the process flow, since it mainly adopts the chemical scheme of high-temperature strong alkali boiling and bleaching, a large amount of hot water is required for subsequent washing, which results in high energy consumption and large sewage discharge; from From the perspective of process formula, the traditional two-step process of alkali...

AI Technical Summary

Problems solved by technology

[0002] From the perspective of the process flow, although the traditional two-step process of boiling and bleaching has good impurity removal effect and wool effect on cotton fabrics, the process is long, the energy consumption is high, the fabric feels poor, the strength loss is large, and the efficiency is the lowest; while the traditional Although the one-bath alkaline boiling process effectively shortens the process flow, since it mainly adopts the chemical scheme of high-temperature strong alkali boiling and bleaching, a large amount of hot water is required for subsequent washing, which results in high energy consumption and large sewage discharge; from From the perspective of process formula, the traditional two-step process of alkali boiling-oxygen bleaching and the one-bath alkali-oxygen bleaching process use chemical methods of high temperature and strong alkali, which require the use of a large amount of alkali agent, scouring penetrant, and hydrogen peroxide. Stabilizers, chelating dispersants, hydrogen peroxide and other chemical substances, these chemical substances will produce a large amount of sewage discharge, increase the difficulty and cost of sewage treatment and a series of problems; and the traditional two-step process of boiling and bleaching technology and the traditional one-step alkaline boiling The bath ratio of the bath process is 1:10, the consumption of water, electricity and steam is relatively large, and the amount of wastewater discharged is large