Print Washing and Aftertreatment Ranges
topic
Print washing ranges use multiple counter-current wash boxes with cold rinse, warm enzyme or alkaline washing for unfixed dye removal, and soap washing at 95 degrees Celsius to remove thickener and unfixed dye from printed fabric before final rinsing and softener application, with effective washing being essential for achieving the wet and rubbing fastness specifications required for printed fabric particularly in the dark and bright colours of fashion printing.
Role
Removes the unfixed dye and thickener from printed fabric surfaces that would otherwise cause poor rubbing and washing fastness that makes the printed fabric unsuitable for garment use, with washing efficiency for complete unfixed dye removal being the primary determinant of printed fabric fastness performance and requiring carefully controlled washing temperature, detergent concentration, and residence time for different dye and print system combinations.