One-bath dyeing of pure cotton knitted fabrics by deoxidizing and polishing

Abstract

The invention discloses pure cotton knitted fabric deoxidizing polishing one bath process dyeing, and belongs to the technical field of dyeing or printing of textile. The pure cotton knitted fabric deoxidizing polishing one bath process dyeing comprises cooking liquid, draining liquid, hot cleaning and final treatment, and deoxidizing polishing one bath process dyeing is further constituted between the hot cleaning and the final treatment. The deoxidizing polishing one bath process dyeing is that temperature of soft water is raised to 40-60 DEG C a potential of hydrogen (PH) value is adjusted to 5-7, polishing enyme 988 is added to run for 15 minutes, and the dye bath rate is kept as 1:5-1:20. Dye is added (30 minutes) to run for 15 minutes, anhydrous sodium sulphate (30 minutes) is added to run for 30 minutes, and soda ash is added (40 minutes) to keep warm for 60 minutes. The polishing enyme 988 is cellulose biology enzyme, and additive amount is 1-2%. An equivalent effect or a good polishing effect with bath treatment can be obtained, surface of baffeta after treatment is little in lousiness and clear in lines, anti-pilling grades are improved, and at the same time, dye colored light and depth are not affected.

Description

technical field [0001] The invention relates to one-bath dyeing of pure cotton knitted fabrics by deoxidizing and polishing, and belongs to the technical field of dyeing or printing of textiles. Background technique [0002] The traditional fabric polishing process is boiling and bleaching→draining→hot water→peracid neutralization→washing→deoxidation→dyeing→post-treatment, that is, the fabric is pre-treated first, then the hydrogen peroxide residue is removed, and then the polishing process is performed. Final dyeing and post-processing. This process has been used for decades. The process is lengthy, seriously time-consuming, and the operation is complicated and strict (the pH value is strictly controlled). If it is not in place, the polishing effect will not be achieved, and even the dyeing quality will be affected. In particular, the current cellulase polishing treatment is usually carried out before or after dyeing, and the residual alkali components exuded from the fibe...

AI Technical Summary

Problems solved by technology

This process has been used for decades. The process is lengthy, time-consuming, complicated and strict (pH control is strict), and if it is not in place, the polishing effect will not be achieved, and even the dyeing quality will be affected.

In particular, the current cellulase polishing treatment is usually carried out before or after dyeing, and the residual alkali components exuded from the fibers during the boiling and bleaching process are likely to cause pH fluctuations, resulting in instability in the deoxygenation process and poor treatment effects