Continuous Washing Parameters and Their Effects on Pre-Treatment Results

Abstract

This paper presents some practical hints of an efficient washing in a continuous process for pre-treated fabrics. The work was performed in a well known Textile mill in Karachi, Pakistan. The study was done to determine effect of some important parameters to save on water and energy (steam and electricity) consumption. Important variable washing parameters such as temperature, water flow rate and speed (which are based on hydrodynamics & mass transfer principles) of the continuous washing range have been discussed & and their effects on TEGEWA, absorbency, pH & whiteness results have been reported with reference of standardize testing methods. Especially, this paper includes; the washing theory & principles & effective & efficient washing factors; which are explained in the simplest way with industrial standard calculations & experiments.

Key Words: TEGEWA, Diffusion Washing, Water Flow rate, Absorbency, Cold Pad Batch, Turbulence (Mechanical Agitation).