Production process of colored viscose filament yarns

Abstract

The invention relates to a production process of colored viscose filament yarns, and belongs to the technical field of the production and the manufacturing of the colored viscose filament yarns, particularly the manufacturing of the colored viscose filament yarns by using a before-spinning solution dyeing method. By using the production process, through improving color paste solution preparation, colored viscose preparation and spinning dyeing formation, a novel reducing agent is not introduced anymore; the production investment and the secondary pollution of the reducing agent are reduced; by using the production process, a dye paste solution is directly reduced by directly utilizing a reducing environment in a viscose; the reducing agents such as sodium hydrosulfite are not introduced anymore; production working procedures are decreased; the production cost is reduced; meanwhile, by using the production process, an oxidant is used in a targeted way; all reduced dyes can also carry out uniform dyeing; the product quality is improved; and the color range of a product is broadened.

Description

technical field [0001] The invention relates to a production process of viscose filament, more specifically, the invention relates to a production process of colored viscose filament, which belongs to the production and manufacture of colored viscose filament, especially the production of colored viscose filament dyeing method before spinning. Viscose filament technology field. Background technique [0002] At present, there are three main production methods of colored viscose filaments on the market: [0003] 1. In the post-processing process of finished fibers, the finished white silk is dyed and finished, and then dyed. This method will generate a large amount of dyeing and finishing colored wastewater, causing environmental pollution; [0004] 2. Use insoluble color particles such as pigments and paints to mix them into spun rubber before spinning, and then directly spin them. Although this method eliminates the generation of colored wastewater, the color of the finishe...

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Problems solved by technology

[0008] The present invention aims to solve the secondary pollution caused by the addition of reducing agent sodium hydrochloride to the vat dyes in the prior art, which increases the cost of environmental protection, and does not use oxidants to cause large-area color flowers and spots to affect product quality, so that the process can The scope of application is very narrow, and the addition of reducing agents makes it impossible to carry out large-scale production. A production process for colored viscose filaments is provided, so that when vat dyes are used in the process, there is no need to add reducing agents and hydrosulfites, reducing production process, reduce production cost, and at the same time, this patent also enables all vat dyes to be dyed evenly, which improves product quality, broadens the color range of products, and avoids the reducing environment of viscose collagen solution, so that the process is simple and controllable. make industrialization possible

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