The Low-temperature Dyeing of Polyester Fabric

The use of polyester fabrics in a project to investigate the application of real wax batik print styles necessitated the application of a low-temperature dyeing technique. Consequently an ultrasonic dyeing method was explored, in which the use of appropriate pre-swelling of the substrate has been reported to give acceptable shade of depths at 50 ºC. Experiments involving three separate disperse dyes demonstrated little advantage for ultrasonic dyeing over conventional methods, particularly when carrier was incorporated into the dyebath. The depths of shade obtained were considerably inferior to those achievable in commercial dyeing at the boil with carrier included