Combined scouring and desizing

A combination of peroxy compound and caustic soda at elevated temperature can effectively combine desizmg and scouring conditions. In this process, the fab- 

In the pad-steam process, the fabric is padded with a solution containing 70 g/1 caustic soda, 3 g/1 sodium persulphate and 10 g/1 non-ionic detergent at 40°C with a wet pick-up of about 80% and then the fabric is steamed for 12 min at 102 C. The fabric is then washed thoroughly in an open soaper with a temperature of about 98 C in the first and second, 80°C in the third and 60 and 50 C in the fourth and fifth compartments respectively. 

Grey fabric can be simultaneously desized and scoured by making use of a suspension of enzyme, a chlorinated solvent and surfactant solution (Markal II process, Chapter 4). 

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