Purge and Shutdown Compounds
Polyfil’s purge/shutdown compounds have excellent release properties as well as an affinity and compatibility with various thermoplastic resins. These compounds are designed to extrude with low energy requirements and can withstand severe thermal abuse. They have the rigidity needed to purge out the stiffest grades of polymers yet can be flushed out by the softest grade materials.
When used before maintenance shutdowns, these thermally stable products have a very low affinity to metal surfaces and can easily displace most resins. They can easily be peeled off from the screw and die, saving time and improving overall production optimization.
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