Instapurge Mechanical Purging Compound 
InstaPurge is available in filled and unfilled forms and can be used with resins processed between 175-332°C.
InstaPurge F contains a chopped glass fibre material that provides additional “scrubbing” effectiveness for difficult purges.
InstaPurge U should be used in the following situations:
- Hot runner systems
- Extrusion systems unless the die and any screens or filters are removed
- In systems that have internal flow passages of less than 1.0 mm
- When the follow-on resin is of low viscosity (such as flexible PVC or LDPE) and might have difficulty displacing residues of the filled purging compound
- When the added abrasiveness of the filler causes concern about wear on soft or polished metal finishes