Abstract:

In order to achieve more accurate color matching of cotton colored spun yarns, based on Stearns-Noechel model, a common optical model used in the field of color matching of colored spun yarns with different colored monochrome cotton fibers including cyan, magenta, yellow, black and white cotton fibers were firstly utilized to blend into yarn samples according to different mixing ratios and different combinations. Second, the color reflectance values of the samples were measured by the spectrophotometer. Thirdly, the Stearns-Noechel model was introduced and its pending parameter was optimized by mathematical statistics analysis, three new modified models corresponding to different parameters were eventually constructed. The results show that the modified model is more accurate in predicting the formulation of samples when the color samples were divided into achromatic and chromatic series, and the color difference of the formulation between the predicted and the standard sample is the smallest among the three modified models. The average color difference is about 0.75 (CMC(2:1)), which satisfies the requirement of cotton color matching.

Key words: cotton fiber, color spun yarn, color matching, Stearns-Noechel model, color difference