Non-stink black denim dyeing technology

Abstract

The invention discloses a non-stink black denim dyeing technology. The non-stink black denim dyeing technology includes a basic yarn beam wetting step, a dyeing step, a water washing step, a color fixing step, a brittleness preventing step, a drying sizing step and a lease reeling step which are continuously completed in one step through a sizing and drying combined machine. According to the dyeing step, under the condition that the temperature ranges from 90 DEG C to 98 DEG C, warp yarn is subjected to dip dyeing through a dyeing base solution, and the dyeing base solution includes the following components of 95 g / L-105 g / L of sulfur black, 25 g / L-35 g / L of a novel composite reducing agent, 1 g / L-5 g / L of an alkali-resisting penetrating agent, 1 g / L-5 g / L of Turkey red oil and 25 g / L-35 g / L of caustic soda. In the denim dyeing technology, the novel composite reducing agent is adopted for replacing sodium sulfide, free sulfides of black denim fabric can be greatly reduced, people cannot smell the stink smell on the fabric, the COD index of sewage generated by subsequent production of clothes manufacturing, water washing and the like is reduced by 76% or higher, the content of the sulfides is reduced by 74% or higher, the content of hydrogen sulfide in waste gas of a single machine is reduced by 72% or higher, the ammonia content is reduced by 91% or higher, the free sulfides ofthe fabric are obviously reduced, and people cannot smell the stink smell completely.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a process for dyeing odorless black denim. Background technique [0002] The traditional dyeing process of black denim is to dye sulfur black on a combined dyeing machine, and sodium sulfide is used as a reducing agent for the reduction and dissolution of sulfur black. During the decomposition process of sodium sulfide, a large amount of hydrogen sulfide gas will be released. Hydrogen gas is a poisonous gas with a strong smell of rotten eggs, which brings great pollution to the production environment. The denim produced by dyeing with the old process has a high content of free sulfide, which will make the fabric emit a strong hydrogen sulfide odor. Bring very big pollution to following clothes making, washing process. Therefore, how to reduce the free sulfide of black denim fabric, make the fabric not smell peculiar smell, and reduce the sewage pollution that production produces...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dyeing process of odorless black denim, aiming to solve the problem of how to reduce the free sulfide of black denim fabric, so that the fabric does not smell bad smell, and reduce the sewage pollution produced by production

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