To remove trace amounts of color or black specks, this procedure can be used for “on the fly” purging.

1. Keep operation running normally, but prepare to divert the product from the finished goods stream.
2. Load hopper with Purgex.
   Note: Amount of Purgex needed is equivalent to 1-1/2 times the barrel volume.
3. Feed rapidly in one fast slug.
4. Increase screw speed until safe pressure limits have been reached.
5. Purge through entire downstream system, including die if possible (die gap must be at least .030 inches).
6. Use maximum safe screw speed (within safe pressure limits) for one minute, then vary the screw speed from maximum to low to medium, completing the purge at maximum.
7. Turn off extruder and clean screen pack or install new.
8. Follow the Purgex feed with the next resin, and observe material for acceptability.
9. Resume production.

Questions? Call our Technical Support team at (800) 803-6242.