Determinación del tiempo optimo y cantidad de colorantes en el proceso de reteñido de DENIM en la Empresa RADEL INDUSTRY S.A.

Abstract

The optimum time and quantity of dye in the process of dyeing denim in the company RADEL INDUSTRY S.A. Ambato was determined. In order to reduce the cost by acquiring the dye directly and having the option of making mixtures. The experimental method and the analysis technique were used in this research by means of dyeing tests in the Analysis Laboratory of the company RADEL INDUSTRY S.A. having standardized parameters and applied directly in the dyeing process by means of infrared, taking into account determining factors for color fixation and dye exhaustion such as: amount of dye, temperature, time and pH for the application of exhaustion curves achieving an improvement in the physicochemical characteristics of the fiber and efficiency in the process. The results obtained in the experimental part allow us to determine adequate quantities of synthetic dyes at 1% in weight, applied in trichromies to denim. Thus we have: TRICHROMY 1: ORANGE 2GL 40%, ORANGE S 19%, ROSE 16%, BLUE BRL 25%, TRICHROMY 2: ORANGE 2GL 41%, ORANGE S 18%, ROSE 16%, BLUE BRL 25%. At a temperature of 80°C, staining time of 60 minutes, fixation time of 10 minutes and pH of 4.5. It is concluded that the contribution of the present research lies in the innovation of color through the application of textile auxiliaries and an optimum exhaustion of colorant. I recommend precision for each dyestuff dosage and to control determining parameters of dyeing by exhaustion. Consequently, the best fixation allows to reduce the quantity of dyestuff in the wastewater and consequently the environmental impact.