Washing technology of active dye detergent

Abstract

The invention provides a washing technology of active dye detergent. A dyed product is dried after successively cold wash, acid soap wash, alkali wash, hot wash and warm wash, wherein cold wash is carried out by adopting room temperature water to wash for 1-3 lattices; acid soap wash is carried out by soap in soap wash solution at the temperature of 40-60 DEG C for 1-2 lattices, the pH value of soap wash solution is 3-5, and consumption amount of detergent in soap solution is 0.6-1.2 g / l; alkali wash is carried out by washing in alkaline solution of which the pH is 8-10 at the temperature of 40-50 DEG C; hot wash is carried out by washing in hot water at the temperature of 90-95 DEG C for 1-2 lattices; and warm wash is characterized in washing in warm water at the temperature of 45-60 DEG C for 1-2 lattices. The invention is suitable for washing technology after active dye pad dyeing and has the advantages that the washing technology carries out soap wash at acid condition, has low soap wash temperature and few washing procedures, and can save a great quantity of water and steam. The rubbing fastness and soaping fastness of washed textile are superior to those of conventional washing technology.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing technology, in particular to a washing process of a detergent for pure cotton woven fabrics dyed with reactive dyes. Background technique [0002] Since the advent of reactive dyes in 1956, its development has been in a leading position. At present, the annual output of reactive dyes for cellulose fibers in the world accounts for about 20% of the total annual output of dyes. Due to the increase in the output of newly developed cellulose products such as Lyocell fiber and the steady growth of cotton fibers, the annual output of reactive dyes will continue increase. [0003] During the dyeing process of reactive dyes, the surface of the dyed fabric is stained with a large number of floating dyes, including partially hydrolyzed dyes and dyes that have been adsorbed on the fibers without participating in the covalent reaction. They have certain directness to the fibers. It must be detache...

AI Technical Summary

Problems solved by technology

[0003] During the dyeing process of reactive dyes, the surface of the dyed fabric is stained with a large number of floating dyes, including partially hydrolyzed dyes and dyes that have been adsorbed on the fibers without participating in the covalent reaction. They have certain directness to the fibers. It must be detached from the fiber and enter the aqueous solution with the help of external force and additives. Since the floating dye has a dynamic adsorption balance between the fiber and the cleaning solution, it will be re-adsorbed to the surface of the fiber after being eluted, resulting in floating dye. Disadvantages such as color washing is not clean, the wet rubbing fastness of the product does not meet the requirements, etc.

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