Effect of Dyeing Process on the Colourimetric Behavior of Dyed Polyester Fabrics

Abstract

In this paper, the effects of dyeing processes on the colourimetric behavior of the disperse-dyed polyester has been studied and following results are obtained.
(1) The saturation and the darkness of the DIN system were remarkably dependent on the dyeing method and after-treatment, i. e., rinsing, soaping and reduction clearing.
(2) The order of decreasing saturation is : dip dyeing > pad steam >pad thermosol, and reduction clearing >soaping > rinsing.
(3) The order of increasing darkness is : dip dyeing pad steam < pad thermosol, and reduction clearing < soaping < rinsing.
(4) A brilliant shade is obtained by the dip dyeing compared with the pad method (steam, thermosol).