A Study on Dyeing Effects of Scouring and Dyeing Polyester Fabric in One Bath

The dyeing effects of scouring and dyeing polyester fabric in one bath were investigated in order to analyze the feasibility of the process.The results indicated that: with scouring and dyeing in one bath,the dyeing effects in the condition of weak acid was better than that in the condition of alkali;compared effects of the new process with that of normal dyeing process,the color fastness to soaping and the fastness to crocking were similar,the value of K/S and the rate of dye-uptake of dyes were a little lower but accepted as well as property of build-up.Among the chosen three disperse dyes,the dyeing performances of Disperse Blue E-R were much closer to normal dyeing process with scouring and dyeing in one bath and in the condition of weak acid;and the process was more feasible for Disperse Blue E-R.