Dyeing technique of silkete unshrinkable wool yarn

Abstract

The invention relates to a process for dyeing mercerized shrinkproof wool yarn, belonging to the textile yarn dyeing technical field. The process comprises the following steps that: the to-be-dyed mercerized shrinkproof wool yarn which is treated before dyeing is put into a dyeing container; water is added to the dyeing container and the bath ratio is controlled; additives and cotton reactive dyes are added to the dyeing container at the room temperature; the heat of the dyeing container is preserved at the room temperature; salt is added to the dyeing container at the room temperature; then the heat of the dyeing container is preserved at the room temperature; the dyeing container is heated, and the heating speed is controlled; the heat of the dyeing container is preserved; finally, the dyed mercerized shrinkproof wool yarn can be obtained orderly through cooling, liquid discharge, washing through clear water, washing through ammonia water, soaping, washing through hot water, acid neutralization, fixation, softening, dehydration and drying. The process has the advantages that: the dyes used are cotton reactive dyes, which are low in prices and helpful to save cost; the dyes raise the color fastness after dyeing by 1-2 levels, are good in level dyeing property, bright in color and helpful to guarantee product quality; the process is simple, favorable for saving energy and friendly to environment.

Description

technical field [0001] The invention belongs to the technical field of textile yarn dyeing, and in particular relates to a dyeing process of mercerized shrink-proof wool yarn. Background technique [0002] Mercerized shrink-resistant wool removes the scales of wool through chemical treatment, thereby improving its physical, mechanical and chemical properties, improving the fiber's wearability, and obtaining higher added value. Compared with ordinary wool products, the main features of mercerized shrink-proof wool products are shrink-resistant, machine washable, and anti-pilling. In recent years, they have become more and more popular among consumers. [0003] At present, the industry usually uses weak acid dyes, neutral dyes, and reactive dyes for wool under acidic conditions to dye mercerized shrink-proof wool yarns. Specifically, it can be dyed by figure 1 As shown, put the yarn into a dyeing container such as a dyeing vat, add additives to the dyeing container such as a ...

AI Technical Summary

Problems solved by technology

This traditional dyeing process has the following deficiencies: one is that the used weak acid dyes, neutral dyes, and reactive dyes for wool are more expensive, so not only the dyeing cost increases but also the final product is expensive; the other is weak acid dyes. Dyes can give wool fibers bright colors, but the color is light and the color fastness is poor, and a considerable part of the weak acid dyes are forbidden azo dyes, which are not environmentally friendly; the third is neutral dyes and reactive dyes for wool. It has the advantages of deep color and good color fastness, but the color of neutral dyes is not bright and dull, and it is difficult to dye some beautiful colors. Reactive dyes can be used to dye bright colors, but the price is expensive

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