Overview of Discharge Printing Techniques on Denim Fabric

Moawaed, Samira; Hashad, Alaa; Mohamed, Mona; Abd El-AAty, Mai; Hassabo, Ahmed G.; Abdel-Aziz, Eman; Othman, Hanan

doi:10.21608/jtcps.2022.143637.1127

Overview of Discharge Printing Techniques on Denim Fabric

Document Type : Original Article

Authors

¹ Benha University, Faculty of Applied Arts, Printing, Dyeing and Finishing Department, Benha, Egypt

² National Research Centre (NRC), Textile Research and Technology Institute (TRTI), Pre-treatment and Finishing of Cellulose based Textiles Department (PFCTD), El-Behouth St. (former El-Tahrir str.), Dokki, P.O. 12622, Giza, Egypt

10.21608/jtcps.2022.143637.1127

Abstract

Discharge printing: is a type of printing in which the ink is applied to a previously colored cloth, often known as the 'ground' shade. The dyes used for the ground shade must be carefully chosen such that when a proper print paste is applied, the dyed cloth is permanently decolored locally, resulting in a 'white' discharge patterning look. Discharge printing produces vivid, opaque graphics on dark textiles while maintaining a delicate feel. The patterns on the cloth are created by the chemical degradation of the original dye in the printed sections in the discharge technique. With these factors in mind, the current study attempted to optimize the discharge printing recipe by adjusting the dye and discharging agent concentrations. of dye and discharging agent, for denim cotton fabric dyed with eco-friendly reactive dye and to assess the physical and color fastness properties of printed samples.

Keywords