The Monitoring of Dyebath Composition by Transmission Measurements

A preliminary investigation has been made of the concept of using transmission of solutions of diluted dyebaths as a means of monitoring the baths prior to use in bulk-dyeing processes. So far this has been done only by calculation, using the methods of computer match prediction, to establish a correlation between the colour of the diluted pad-Liquor in the application of Dispersal T and Procion T dyes to a polyester-cotton blend fabric by a pad-bake process, and the expected colour of a dyeing made from it. The correlation obtained suggests that the method justifies further development work, in circumstances specific to its intended use, as a means of checking that a prepared dyebath is suitable to produce a dyeing which is within specified tolerance limits