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Self-cleaning molds.

U.S. Patent 9,227,350 (January 5, 2016), "Molding System Having a Residue Cleaning Feature and an Adjustable Mold Shut Height," Jean-Christophe Witz, Sven Kmoch, and Ralf Walter Fisch (Husky Injection Molding Systems Ltd., Bolton, Ontario, Canada).

Mold cleaniness of certain parts is critical in blow molding with preforms for a continuous, efficient molding process with a minimum of defects. Witz, Kmoch, and Fisch developed a method for periodic cleaning of a sensitive part of the mold, such as a preform neck, without mold disassembly, using a special cleaning component. This device blocks the melt and forces a cleaning fluid through the mold and out the vents after cleaning. This system is designed to operate after a predetermined number of molding cycles.

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Author:Corneliussen, Roger
Publication:Plastics Engineering
Geographic Code:1USA
Date:May 1, 2016
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