Spinning forming method of non-dyed flame-retardant viscose colored filament

Abstract

The invention relates to a spinning forming method of non-dyed flame-retardant viscose colored filaments. The spinning forming method comprises the following steps: providing spinning mixed liquid prepared by mixing a silicon-nitrogen flame retardant, color paste and alpha cellulose glue; providing a spinning acid bath prepared by mixing sulfuric acid, zinc sulfate and sodium sulfate; deforming and filtering the spinning mixed liquid, feeding the spinning mixed liquid into the spinning acid bath by virtue of a metering pump and a spinning nozzle, and carrying out solidification forming and spinning drafting so as to obtain colored continuous filaments; providing a curing treatment liquid containing positive ions Ti<4+> and Ca<2+>; curing the colored continuous filaments; and respectively carrying out water washing, drying and packaging on the cured filaments, so as to obtain the finished colored filaments. According to the spinning forming method, a downstream dyeing procedure is omitted, so that the environmental pollution caused by spinning printing and dyeing wastewater as well as the injury caused by dyed products to human bodies are maximally reduced or avoided.

Description

technical field

[0001] The invention relates to a wet spinning forming process. Background technique

[0002] Whether synthetic fibers, viscose fibers or natural cotton fibers are easy to burn and cause fires, and flame-retardant fibers can solve these problems, especially the flame-retardant viscose fibers produced by adding flame retardants to viscose fibers can improve the fiber's ease of use. The characteristics of fire can avoid fire, reduce property and life damage, and also maintain the unique performance of viscose fiber's original comfort.

[0003] Due to the coexistence of colorants and flame retardants in the spinning mixture, there will be various effects (such as coloring is not firm, the curing effect of flame retardants is not good, and the acid bath coagulation is poor, etc.), the flame retardant fibers currently produced and sold are all Colorless (primary color) basic fiber, dyed (dyeing) according to needs after weaving into cloth. In this case, printing...