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Scouring of Polyester/Cotton Blends Goods

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Scouring of Polyester/Cotton Blends:
Polyester and cotton are two different fibers obtained from natural source and made of synthetically consecutively. Because of varying physical (Length, diameter, strength, elasticity, torsional rigidity, frictional properties) and chemical properties (thermal properties, density, resistance to chemical agents) of these two fibers have led to treat this blend within proper conditions. Cotton has very good resistance to alkalis but the action of aqueous alkalis may lead an adverse impact on polyester. It should not be pressure kier boiled in the presence of alkalis, as these conditions favor an accelerated attack on the fiber.

Typical Scouring Recipe Polyester/Cotton Blend Goods:

Wetting agent…………………………………..= 0.5-1.0 g/l
Sequesterant …………………………………..= 1.0-2.0 g/l
Detergent…………………………………………= 1.0-2.0 g/l
Caustic soda 36°Be……………………………..= 1.0-3.0 g/l
Soda ash…………………………………………….= 1.0-4.0 g/l
Temperature…………………………………….= 90-100°C
Time………………………………………………….= 30-60 min
pH…………………………………………………….= 10.5+/-0.5
M:L…………………………………………………...= 1:10

Scouring Procedure:
  • Set the with substrate at room temperature with wetting agent, detergent, sequestering agents, and alkalis.
  • Raise the temperature to 95-100°C @1-3°/min
  • Run the bath for 30-60 min
  • Cool down the bath temperature to 60-70°C and drop
  • Rinse twice with hot (around 60°C) and cool water. 
 

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