Production process and production equipment for pure cotton fabric with white space effect

Abstract

A production process and production equipment for pure cotton fabric with white space effect. The production process includes pretreatment, lye padding, dye paste scraping, stack cooling and fixation, and floating color washing. The dye paste scraping step refers to scraping a reactive dye paste on the back of pure cotton fabric subjected to lye padding. The stack cooling and fixation step refers to rolling up the pure cotton fabric scraped with the reactive dye paste; in the rolling process, isolating membranes are introduced to separate each layer of the cotton fabric, so that the reactive dye paste on the back of the pure cotton fabric to gradually diffuses, permeates, adsorbs to a right side, and finally reacts into bonds to fix the color. As the reactive dye is in a paste shape, diffusivity and permeability of the dye are limited to a certain extent that only part of the dye can reach the right side of the pure cotton fabric; in addition, the pure cotton fabric has bump woven texture; therefore, uniform and natural white space effect is formed on the right side.

Description

technical field [0001] The invention relates to a production process of a pure cotton fabric with a blanking effect and production equipment thereof. Background technique [0002] Most of the fabrics with blanking effect (old effect) currently produced are denatured fibers with different dyeability (modified cotton introduced with cationic groups) blended with unmodified cotton, and then dyed. There are some unstable factors in uniform cationization, stability of introduced groups, changes in fiber properties due to cationization, and uniformity of cotton blending. [0003] The existing cotton dyeing technology is mainly based on long-car continuous pad dyeing, and cylinder dyeing is no longer the mainstream. The dyeing of the long car is divided into two parts, the dyeing of the front car and the color fixing of the back car, which require high temperature drying and high energy consumption. In addition, the discharged waste liquid contains a large amount of chemical mater...

AI Technical Summary

Problems solved by technology

However, the lye system containing silicon is not easy to clean in the cold pad-batch device after long-term padding, which will make the roll hard, and sodium silicate has strong adsorption to cotton fibers, which will cause bad hand feeling if it is not cleaned by water. , rough

After the padding solution is prepared, the validity period is short, and the requirements for the reactivity, reaction speed and directness of the dye are also relatively strict.

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