We've all heard the old myth that an apple falling onto his noggin inspired Sir Isaac Newton to start thinking about gravity. A more recent myth holds that commercial purging compounds (CPCs) are for injection molding machines only. While the first tale may or may not be true, there's no doubt that the second is a bunch of bull. While it's true that CPCs are considered most often for injection molding, they also can provide the same benefits to extrusion processors.
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