Calculation of dyestuffs and auxiliaries for effective wet processing technology

Abstract

Wet processing technology (Dyeing) is known as much valuable process for increasing the attractiveness of the textile material and that is very much costly as well as time consuming. So it is very important to take caution to calculate the accurate amount of auxiliaries (Caustic soda-NaoH, Soda ash-Na₂Co₃, Salt- NaCl etc) and dyestuff should be taken to get quality dyed fabric (appropriate shade, even shade). We know, the process by which a textile material change its color as well as properties (physical, chemical properties) in wet condition that is known as wet processing technology (pre-treatment, dyeing/printing and after treatment) pretreatment involved desizing, scouring, bleaching and after treatment involved washing, neutralization as well as to impart some stabilizing, textural and functional effect of finishing. At the initial stage of calculation, needs to calculate the lap deep before go for bulk productions. For this a lots of work is done in the dyeing laboratory. In the dyeing lab, lab dip or sample is developed by the dyeing master. Lab dip plays an important role in shade matching & this is an important task before bulk production.

Keywords: Chemical (auxiliaries) calculation, Dyestuff calculation, Achieve accurate shade offered by buyer.