Spinning and dyeing method for viscose

Abstract

The present invention discloses a dyeing method of textile dyeing cellulose viscose, in order to overcome the drawbacks of the prior dyeing method can not guarantee the oxidation-reduction process be controlled effectively in colored cellulose viscose production. The method adds reducing agent and oxidizer into color paste, adds the standby color paste into viscose, the dyeing viscose is prepared after mixing fully, then the dyeing viscose forms reduced thread-line after ejected from spinnerette; in the textile process of reduced thread-line from forming to degumming or when the textile process is completed, the thread-line starts color development on the role of oxidant and acids or alkali, the color is fixed into desired color after reaction is completed. The invention breaks the traditional technology of the traditional ordinary cellulose viscose is colored before textile and is dyed and finished in late processes, it can achieve single filament dyeing, improve dyeing uniformity, color stability and color brightness of thread-line, and achieve the use standard of cotton embroidery thread, as well as decrease production costs significantly; the follow-up processing is pollution-free, the color of produces is bright, dyeing is uniform, hand feeling is comfortable and application is wide.

Description

technical field [0001] The invention relates to an artificial fiber for dyeing silk strips in the spinning process, in particular to a dyeing method for viscose in the spinning and dyeing viscose fiber production process. Background technique [0002] Man-made fibers are also called rayon, viscose fiber, and regenerated cellulose fiber. Viscose color injection before spinning or post-dyeing and finishing processing can make man-made fiber products of various colors, which are widely used in yarn-dyed, home textiles, gold and silver silk, Embroidery thread and yarn field. [0003] Dyeing after filament forming, referred to as post-spinning dyeing, is an obsolete process, which has disadvantages such as complicated process, high cost, and large sewage discharge. So in recent years, the pre-spinning coloring process has been proposed, that is, the pigment is injected into the viscose to become a colored viscose, and then spinning. [0004] The colored yarn produced by the tra...

AI Technical Summary

Problems solved by technology

Since the vat dyes used in the color paste of this method do not use oxidants, and no control measures are taken in the color matching process of viscose, the redox process of indigo and anthraquinone vat dyes cannot be effectively controlled, and the colored viscose obtained The color of the rubber fiber is unstable and the spinnability is poor, so it is impossible to realize industrialized mass production

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