Dye Fading in Laundry Washing Comparison of Washing Machine and Linitest Results

Abstract

Linitest and washing machine results have been compared for the assessment of dye damage/colour fading. 14 dyes of the AISE Monitor Dye Set for bleach induced dye fading were applied in several multi-cycle washes in both devices. It has been shown that dye fading in both applications correlated well with bleach containing detergents, although often the absolute level of fading was higher in a washing machine. Both systems identified the same dyes as being either problematic or safe. On the other hand experiments without a bleach system revealed that dye fading in a washing machine could be different from that generated in a Linitest.

Detergents containing cationic hydroxyethyl cellulose: Benefits on dark garments leveraging a consumer relevant wash method

“…In addition to hue, both chroma and lightness are needed to describe color. Traditionally, dye fading in washed fabrics has been quantified using the ΔE CIELAB (Luijkx, Hild, et al, 2004;Luijkx, Hildz, et al, 2004;Rohwer et al, 2008;Shanda, 2007) of the washed fabrics relative to the unwashed fabrics (reference). Several metrics have been used to assess color differences in textiles like ΔE2000 or ΔEcmc (2:1) without clear general guidance about which one will be superior (Aspland, 2004) to best capture human perception for washed fabrics.…”