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4/1/2010

Improved Purging Agent for Hot Runners

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WEB EXCLUSIVE: Dyna-Purge Div. of Shuman Plastics, Inc., Depew, N.Y., has a new, improved version of its Dyna-Purge P compound optimized for quick color changes in hot-runner systems.

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WEB EXCLUSIVE: Dyna-Purge Div. of Shuman Plastics, Inc., Depew, N.Y., has a new, improved version of its Dyna-Purge P compound optimized for quick color changes in hot-runner systems. The enhanced formulation offers dual scrubbing action and expands into tight channels and negative-flow areas to loosen and remove degraded material. The company says older molds with tight channels and corners will benefit particularly from the improved cleaning action. Customers who switched from the original Dyna-Purge P reportedly have significantly reduced scrap and downtime when making color changes, especially from dark to light colors. For example, custom molder Polyfab Corp. in Sheboygan, Wis., now makes complete color changes in molding lids within 10 min using only 10 lb of improved Dyna-Purge P, according to plant supervisor Todd Martin. Dyna-Purge P is a non-abrasive, non-chemical, thermoplastic purging compound that reportedly contains only FDA-compliant ingredients. It is effective at processing temperatures from 320 to 575 F.

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