Before the dyeing of Nomex®, it is very important to make sure Nomex® is pre-scoured well and evenly to remove any residual processing oils, waxes, and general soil.
For a standard pre-scour, enter goods into a bath at 100°F(38°C) and add 2% owg Orconol CHSA Conc™. Raise temperature to 180°F(82°C) and run for 20 minutes. Cool to 120°F(49°C) and rinse well.
If goods are very soiled, a special scour using Orco Citrisolve DL-AAS-2™ may be necessary:
- In a lukewarm bath add:
1% owg Orconol CHSA Conc™
5% owg Orco Citrisolve DL-AAS-2™
1% owg Tetrasodium Pyrophosphate(TSPP)
- Raise temperature to 160°F(71°C) and run for 20-30 minutes.
- Rinse well.