Pressure compensating molding system

Details Pressure compensating molding system Pressure compensating molding system

2008-08-20

2011-10-11

Gupta, Yogendra (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Molding pressure control means responsive to pressure at...

C264S040300, C425S390000, C425S405200

Reexamination Certificate

active

08033808

ABSTRACT:
A pressure compensating molding system with die faces of thin sheets. A thin die sheet separates a mold cavity from a heating/cooling cavity. A heating system causes a heated fluid to flow through the heating/cooling cavity, thereby preheating the thin sheet. The injection material is forced through a sprue into the mold cavity. Pressure sensors monitor the pressure of the injection material in the mold cavity and in the heating/cooling cavity. A controller varies the pressure in the heating/cooling cavity to equalize a pressure differential across the thin die sheet. A cooling system causes a cooling fluid to flow through the heating/cooling cavity to cool the molded component.

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International Search Report (ISR) and Written Opinion (WO) for International Application No. PCT/US2008/74132, mailed date Nov. 13, 2008.

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