Investigation of Reducing Process of Uneven Shade Problem In Case Of Compact Single Jersey Cotton Knit Fabric with Turquoise Color Reactive Dyes

摘要: Most dyes do not chemically react with the cellulose molecule to affix the color. True chemical reaction between cellulose and the dye molecule occurs with reactive dyes. But some of reactive colors such as turquoise have definite properties which mostly yield even shade with the single jersey cotton fabric which GSM ranges from 120 to 160. Because such fabrics having quite relatively compact structure that does not allow proper penetration of dye molecules evenly into fiber polymer system. Due to those problems, the knit dyeing factories in Bangladesh have been facing a lot of problems. In present days, these factories are practicing redyeing like toping and stripping and dyeing. To solve this problem, the compact single jersey fabric may be treated in different manner in the preparatory stage. The conventional pretreatment process involved scouring, bleaching before dyeing. By using stripping process at preparatory stage may reduce uneven shade problem during coloration of turquoise color of reactive dye.