Research of Scouring and Dyeing in One Bath for Polyester /Cotton Knitted Fabric

In order to analyze the feasibility of the process of scouring and dyeing in one bath for polyester /cotton fabric,the dyeing effects of scouring and dyeing in one bath were investigated.The results indicated that: in the process of scouring and dyeing in one bath with disperse / reactive dyes,two-step dyeing were more beneficial for improving dye up-take,colour yield,building up,color fastness and levelness than that of one-step dyeing;And the effects including the value of K / S and the color resistance to washing and rubbing of the two-step dyeing was similar to traditional dyeing but had a little poor in the building up property.The two-step dyeing has no effect on the hue compared to traditional dyeing.In addition,operation error has little influnence on dyeing reproductibility.