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Scouring of Polyester/Cellulosic blends is necessary to remove processing oils, waxes, and general soil that may be present in the polyester and/or cellulose.  Any processing bath involving rayon should not exceed a pH of 9.0 as it may lead to saponification of the rayon.  A typical scouring procedure is as follows:

 

  • Scour goods in a bath containing 2% owg Orconol CHSA Conc™ and 2% owg tetrasodium pyrophosphate(TSPP)
  • Run at 205°F(96°C) for one hour.
  • For heavily soiled cotton, 5% owg of Caustic Soda may be used in place of TSPP, and Orconol CHSA Conc™ should be substituted with Orcoterge ALK-N Conc™ due to the high alkalinity of the bath.

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