Process for the production of cotton warp yarns with 'inverse denim' effect

摘要

The present invention relates to a process for the production of cotton warp yarns having an "inverse denim" effect, characterized in that in an indigo dyeing plant DOLLAR A - in a dyeing step the cotton warp yarn with indigo at a dyeing temperature of 30 to 90 ° C and is dyed indigo concentration of 5-500 g / l in one go and DOLLAR A - is selectively decolorized in a subsequent bleaching step of the indigo on the surface of the cotton warp yarn.