Rapid yarn bleaching method

Abstract

The invention discloses a rapid yarn bleaching method which comprises the following steps: firstly, carrying out rapid oxygen bleaching on yarn with a 2.5-3g / L rapid oxygen bleaching agent BLG and 5-7ml / L of 27.5% hydrogen peroxide, wherein the bath ratio of the rapid oxygen bleaching agent to the hydrogen peroxide is 1 to (6-12); carrying out heat preservation at the temperature of 98-100 DEG C for 45-60 minutes; then feeding water for cooling, and discharging liquid; carrying out acid washing for 8-10 minutes with 0.4-0.6% (o. w. f) acetic acid which has the temperature of 60-65 DEG C for 8-10 minutes; and finally carrying out enzyme deoxidation with 0.08-0.1ml / L catalase with the pH value of 6-7 at the temperature of 30-40 DEG C for 10-20 minutes. After being treated by oxygen bleaching, the fabric is uniform and transparent, and does not contain impurities, alkali, acid, an oxidizing agent and a reducing agent; furthermore, the technology is simple and short, and the cost is lowered.

Description

[0001] technical field [0002] The invention belongs to the technical field of textiles, and in particular relates to a rapid bleaching method for yarns. [0003] Background technique [0004] Traditional yarn bleaching methods include high-temperature and high-pressure dyeing machine hank bleaching, bobbin high-temperature and high-pressure bleaching, bobbin cold bleaching, double-box high-temperature and high-pressure hank bleaching, high-temperature crawler hank bleaching, high-temperature jet hank bleaching, and hydrogen peroxide hank steam bleaching. Steam bleaching, high-temperature bleaching of skeined yarn in a yarn pot, etc., all have the defects of long process flow, high cost, and a lot of waste water, and the yarn cannot be uniform and thorough after bleaching, and does not contain impurities, alkali, acid, oxidant, Reducer requirements. [0005] Contents of the invention [0006] In order to overcome the above-mentioned defects existing in the prior art fi...

AI Technical Summary

Problems solved by technology

[0004] Traditional yarn bleaching methods include high-temperature and high-pressure dyeing machine hank bleaching, bobbin high-temperature and high-pressure bleaching, bobbin cold bleaching, double-box high-temperature and high-pressure hank bleaching, high-temperature crawler hank bleaching, high-temperature jet hank bleaching, and hydrogen peroxide hank steam bleaching. Steam bleaching, high-temperature bleaching of skeined yarn in a yarn pot, etc., all have the defects of long process flow, high cost, and a lot of waste water, and the yarn cannot be uniform and thorough after bleaching, and does not contain impurities, alkali, acid, oxidant, Reducing Agent Requirements