Sequential Cavity Filling

New Polivalve valve gate hot runner systems from D-M-E (Madison Heights, MI) provide easy-order solutions to high-quality molding of special shapes or multi-cavity parts where the volume of melt can differ significantly.

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New Polivalve valve gate hot runner systems from D-M-E (Madison Heights, MI) provide easy-order solutions to high-quality molding of special shapes or multi-cavity parts where the volume of melt can differ significantly. The systems enable easy injection flow in simultaneous or sequential filling to create parts with unusual or complex hard-to-fill geometries, or to mold multiple parts of different shapes and sizes in one cycle. Low-shear flow and uniform melt temperature control provide excellent surface quality free of stress marks or weld lines. These systems are available in a comprehensive range of sizes and choice of hydraulic or pneumatic activation. Standard "hot half" systems and Simplicity "Drop-In" Systems also are available.