Abstract
In the textile industry, tons of dyes are lost to effluents every year during the dyeing and finishing operations, due to the inefficient processes. As the dyeing process produce tons of effluents, the re-dyeing process multiplies the number. The re-dyeing process will be done when the expected color not reached that caused by the improper setting of parameters. The waste of these processes could threaten the environment. In this paper, we utilize Taguchi methods and ANOVA to obtain the optimum conditions of a dyeing process at XYZ company and to gain the percentage of contributions of each parameter. To confirm the optimum conditions obtained by using the Taguchi Method, verification test was carried out to inspect the similarity between predicted output and five experiments under the optimal conditions and the result was confirmed. The optimum conditions for a dyeing process are dye concentration 3.5%; Na2SO4 concentration 80g/l; Na2CO3 concentration 5.8 g/l; and temperature at 80°C.
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