Use of “colorants replacement technique” in order to reduce the amount of dye consumed in textile dyeing processes

Abstract

Achieving black color in a trichromatic system has been a problem in printing systems and attempts to solve the problem ended in adding black color to the trichromatic system. One of the advantages of this solution is the reduction in other colorants consumption. Since black dyes are the cheapest among most types of dyes in the textile industry, if this solution could be used in the dyeing process, the costs would be reduced and the process would be more economical. In this paper, two methods for using this solution in a dyeing process are proposed and investigated. Both the methods reduce the colorants consumption (up to 50%) and the process cost, with a tolerable color difference to the target. However, depending on the colorants selection, one of the methods would be more effective.

Keywords:

• dyeing recipe
• color replacement
• color consumption
• gray-component replacement
• black replacement
• basic dyes