Printing and dyeing device and printing and dyeing process for high-color-fastness cotton yarn

Abstract

The invention relates to a printing and dyeing device and a printing and dyeing process for high-color-fastness cotton yarn. The device comprises a dye vat body, wherein a hank yarn stand is rotationally connected in the dye vat body, spray pipes are fixedly connected in the dye vat body, steam pipelines are arranged at the upper end of the hank yarn stand, and steam spray arms are communicated with the lower ends of the steam pipelines. The invention also relates to the printing and dyeing process. By means of the device and the process, hank yarn can uniformly rotate in the dye vat body, a dyeing liquid permeates into the hank yarn during rotation of the hank yarn stand, so that the hank yarn and the dyeing liquid make sufficient contact, meanwhile, the spray pipes can act on the hank yarn, and the dyeing liquid is sprayed to the hank yarn through small holes in the spray pipes; while the hank yarn and the dyeing liquid are mixed, the steam pipelines can act on the hank yarn to spraysteam to the hank yarn, the dyeing liquid can be sufficiently mixed with the hank yarn under the action of steam, the dyeing liquid fully soaks the hank yarn, and the dyeing effect on the hank yarn is better.

Description

technical field [0001] The invention relates to the technical field of hank yarn dyeing, in particular to a cotton yarn printing and dyeing device with high color fastness and a printing and dyeing process thereof. Background technique [0002] With the improvement of living standards, people's requirements for daily necessities are getting higher and higher. Whether it is towels or other cotton fabrics used in people's daily life, not only are they required to be comfortable, water-absorbent, etc., but also have higher and higher requirements for their colors and patterns. [0003] When manufacturers produce cotton fabrics, they generally dye the cotton yarns used to make cotton fabrics, and then make them into various single-color or mixed-color cotton fabrics. When dyeing cotton yarn, in order to avoid damage to the structural properties of cotton yarn due to excessive temperature, it is generally carried out at a temperature of 60°C. However, for some specific concentr...

AI Technical Summary

Problems solved by technology

However, for some specific concentrated dyes, when dyeing at 60°C, the color fastness is poor, and the color obtained after dyeing treatment does not meet the requirements

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