Equipment for dying cotton-containing yarn

Abstract

The invention relates to equipment for dying a cotton-containing yarn. The equipment comprises an ultrasonic padding device which comprises a padding tank used for containing a cationic modified solution, a yarn guide roller and a drawing padding roller, wherein the padding roller is internally provided with an ultrasonic vibrating box used for cavitating the cationic modified solution, and the ultrasonic vibrating box is connected with an ultrasonic generator. In the continuous pad dyeing of the cotton-containing yarn, the problems of poor dyeing firmness, poor transparency and low dye-uptake of the continuous pad dyeing technology of the cotton-containing yarn are solved through additionally arranging the ultrasonic padding device, and a boiling off procedure before or in the dyeing process or a pretreatment procedure having a boiling off effect can be saved.

Description

technical field [0001] The invention relates to the field of textile printing and dyeing, in particular to dyeing and finishing equipment for cotton-containing dyed yarn used in fabrics such as knitting, yarn-dyed weaving, and denim. Background technique [0002] The dyeing of dyed yarns containing cotton components used in knitted, yarn-dyed, denim and other fabrics usually adopts dyeing techniques such as hank dyeing, cheese dyeing, warp beam dyeing, and sizing-dyeing combined machine dyeing. These dyeing techniques have obvious disadvantages: first, the dyeing process consumes a lot of water, consumes a lot of energy, and discharges heavy waste water; The pectin, wax and impurities on the yarn can improve the hydrophilicity and capillary effect of the yarn, and facilitate the penetration of dyes. However, the pretreatment process also consumes a lot of water, consumes a lot of energy, and discharges heavy sewage. At the same time, the pectin, wax, and impurities removed ...

AI Technical Summary

Problems solved by technology

These dyeing techniques have obvious disadvantages: first, the dyeing process consumes a lot of water, consumes a lot of energy, and discharges heavy waste water; Pectin, wax and impurities on the surface to improve the hydrophilicity and capillary effect of the yarn to facilitate the penetration of dyes

However, in the application of this technology, the coating cannot effectively penetrate into the yarn fiber, which causes many serious technical and quality problems: First, the color fastness is poor, especially the rubbing fastness, which can only be produced for garment polishing 1. The dyed yarn required for washing; the second is poor dyeing core penetration, the surface of the yarn is dyed with color, but the inside is white, and the twist of the yarn is loose in the subsequent processing process to expose white spots; the third is the low dyeing rate, It is difficult to dye dark colors, the quality is unstable, and the adhesive sticks to the roller seriously

This method has been tested to have a good effect, but it will increase a large amount of energy consumption and wastewater discharge in the pre-scouring process, and more importantly, there are problems in the pre-treatment equipment, production efficiency and broken yarn disposal. severe constraints

Second, according to the current thinking of ultrasonic dyeing research, the ultrasonic method is used to cavitate the coating solution when padding the coating. This method has been tested and verified, and the effect is not ideal.

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