VARIATION IN LINEAR DENSITY OF COMBED YARN DUE TO DYEING WITH REACTIVE DYE IN DIFFERENT SHADE PERCENTAGES

Abstract

Though yarn dyeing is a significant part of wet pro cessing, it still has some major obstacles. It loses its weight as well as strength due to wet treatment. A study on the changes of lin ear density in combed yarn due to different shade p ercentages of reactive dye has been conducted and the results are statisticall y analyzed. Remazol Red RR, Remazol Yellow RR and R emazol Blue RR were used for this experiment. The study reveals that dy e shade percentage effects on the linear density ne gatively. Before 2.5% shade the yarn loss is greater and after 3.5% shade linea r density also decreases. 2.5% to 3.5% shade percen tage can be taken as the range where loss of linear density is much less tha n the other percentages. The lowest loss percentage was found for 3% shade for every dyestuff among which Remazol Red RR was the l east.