Cotton fiber dyeing technique

Abstract

The invention relates to the technical field of dyeing technique in the textile industry and particularly relates to a cotton fiber dyeing technique. According to the cotton fiber dyeing technique, firstly, enzyme is adopted to process cotton fiber to remove impurities such pectin under the smaller fiber operation condition, secondarily, the enzyme reaction conditions are mild, the PH value of the reaction environment is approximately neutral, the needed reaction temperature is lower, and the reaction time is short, so that the environment pollution problem of waste liquor can be solved; then a chromophile dye is adopted and reacts with the fiber to form a combination of a covalent bond, so that the dye becomes a part of fiber molecules, thus being bright in color, good in level-dyeing property, excellent in dyeing color fastness and simple in the using method; and finally, the dyed cotton fiber is firmed by adopting Na2CO3, with the color fixing rate up to 71%. The adopted dyeing technique has the characteristics of improving the dye-uptake of the dye, lowering the sewage treatment cost, reducing the environment pollution and the like.

Description

technical field [0001] The invention relates to the technical field of dyeing process in the textile industry, in particular to the cotton fiber dyeing process. Background technique [0002] With the progress of society and the improvement of living standards, people pay more and more attention to the environment, and the country's environmental protection policies are becoming more and more strict. Vigorous rectification is being carried out. Energy conservation and emission reduction have become the most important goals at present. At the same time, the protection of water resources Insufficient, requires people to reduce the amount of printing and dyeing, reduce unit dyeing loss. [0003] Traditional cotton fiber dyeing adopts high-temperature scouring treatment. Generally, soda ash or scouring agent is added to boil the cotton. The temperature is high and the energy consumption is high. After scouring, the corner water must be released, otherwise the dyeing rate will be ...

AI Technical Summary

Problems solved by technology

[0003] Traditional cotton fiber dyeing adopts high-temperature scouring treatment. Generally, soda ash or scouring agent is added to boil the cotton. The temperature is high and the energy consumption is high. After scouring, the corner water must be released, otherwise the dyeing rate will be reduced. Increase the amount of dye

At the same time, cold water washing should be carried out, and the temperature should be lowered to below 60 degrees, otherwise it will be easy to stain, so the water consumption is relatively high, so the energy consumption of various items is relatively high. In order to further reduce energy consumption, it is urgent to improve the process