Evaluation of change in color of denim fabric after various industrial washing processes with different fiber composition

摘要

Traditional denim made by using 100% cotton and novel denim made by using cotton in warp and spun PP in the weft were treated in 11 different ways on industrial garment washing machines with the help of various textile auxiliaries and pumice. There is an obvious change in color of denim. This change was measured by using Spectrophotometer. Reflectance was taken as a variable to observe the intensity of change. Color difference was measured by using the CIELab color difference formula 1976. Color space coordinates (L~*, a~*, b~*) and color difference ΔE were calculated between the untreated denim and treated denim.