Abstract:

Since it is difficult to directly measure the color of knitted fabric during batch dyeing, this paper proposed a new color prediction method by measuring the dye-uptake rate from the dye bath. Based on dyeing principle and computer color measuring and color matching, this method used mechanism modeling in combination with experiential modeling and developed a math model of fiber’s surface reflectance during dyeing, dye uptake rate and initial concentration of the dye. An algorithm for color prediction of knitted fabric during batch dyeing was thus worked out combining the tri-stimulus value formula. This algorithm for color prediction was verified by dyeing pure cotton fabrics with three reactive dyes as examples.