RELATIVE ABSORBENCY AND REFLECTANCE MEASUREMENTS OF DYE SOLUTIONS ANDDYED FABRICS

The aim of this work was to investigate how fiber optical sensors can be used to detect color deviations in textile dyeing. The absorbance w as measured in dyebaths containing different mixtures of dye component s by means of fiber optical sensors. Test fabrics were dyed in these d yebaths and measured by a reflectance technique. The absorbance measur ements on the dyebaths were correlated with the corresponding K/S Valu es and Delta E values for the fabrics. A method was developed for obta ining a useful correlation between the absorbance spectra and the K/S values. The measurements proved that it is possible to measure the abs orbance of different dyebaths such as reactive and indigosol. Some rea ctive dye colors, though, were more difficult to measure than others. The experiments also verified that absorbance measurements on dyebaths could be reproduced.