Method and apparatus for molding with reduced cull formation

Details Method and apparatus for molding with reduced cull formation Method and apparatus for molding with reduced cull formation

2011-04-19

2011-04-19

Johnson, Christina (Department: 1742)

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

C425S544000, C425S116000

Reexamination Certificate

active

07927087

ABSTRACT:
An apparatus and process are provided for molding electronic devices in a mold, which apparatus comprises at least one runner in the mold connected to a mold supply pot for channeling a molding compound from the mold supply pot to the electronic devices. A plunger assembly is also provided that comprises a main body, and a supplementary body configured to be movable relative to the main body. The plunger assembly is locatable in the mold supply pot and is drivable in a direction towards the runner for forcing the molding compound into the runner. In order to avoid or reduce cull formation, a width of the runner at an opening connecting the runner to the mold supply pot is smaller than a width of the main body of the plunger assembly.

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Search Report mailed Mar. 11, 2009 in corresponding Dutch Patent Application No. 1031065.

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