The Dyna-Purge Division of Shuman Plastics Inc. (Depew, NY) has introduced Dyna-Purge A for polypropylene (PP) color changes. The hybrid product combines key features of both mechanical and chemical ...
A two-cavity, hot runner mold (above) produces the throwing discs at Aakron Rule. Frequent color changes are the norm for this application, and the cost to purge using PP had reached $8000 annually.
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