Textile Dying

Overview

Defoamers in a textile applications can be added at pre-treatment, sizing, and printing. In the synthesis process of starch gelatinization and PVA dissolved in high temperatures and acrylic acid slurry will foam during mixing. Silicone additives are added in small doses to help control the foam during this process. Preparation of paste during the mixing process of textile printing can produce bubbles because of the additional of polymer paste and surfactant. Spray past on the cloth will produce foam due to shear and the effect of the antifoam should be to prevent bubble formation while not applying silicone spots. High temperature conditions during textile pre-treatment produce foam in a highly alkali environment. Control of foam produced by surfactants in desizing and scouring stages can be controlled with concentrated silicone emulsions.