A Comparative Study on Conventional Natural Dyeing and Machine Dyeing Methods

Abstract

Wool yarn has been dyed with natural colourant extracted from the different natural dyes in the absence and presence of Potassium aluminium sulphate, Copper sulphate and Acetic acid mordants for producing shades of different colours, and then tested for CIE Lab properties. L* value of the washed wool yarn was much higher than not washed wool yarn. Colouration of both the dyeing methods is found to be most effectively accomplished at treatment time. Dyeing on effect of treatment temperature, time and different mordants with Conventional and Machine dyeing methods have been discussed.