It's safe to say that the concept of using a commercial purging compound (CPC) has largely been embraced by the plastics processing community. But using a GPG to clean injection molding hot-runner systems still remains somewhat taboo. This is evidenced by the continuing reluctance of some processors to put anything other than resin through their hot runners. This is usually a result of either never having attempted to use a CPC to clean their hot-runner tooling, or they have used a CPC and got less than stellar results.
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