Many processors don’t realize that preserving material characteristics is crucial to product success and failure. The focus here is on molecular weight. When I ask processors about their most important responsibility, the answers usually focus on factors relating to productivity. These typically include some conversation about cycle time, machine utilization, making parts to print, maintaining process capability indices (Cpk) of 1.33 or greater, etc. It is rare to hear any mention of molecular weight, crystallinity, preservation of additives, or minimizing molded-in stress. Materials: A Processor’s Most Important Job, Part 1
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