Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2005-05-03
2005-05-03
McDowell, Suzanne E. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C264S572000, C428S034100
Reexamination Certificate
active
06887406
ABSTRACT:
A process for producing an injection molded article with a hollow rim portion in an injection molding machine including the steps of injecting a short shot of injection molding material into a mold via an injection nozzle, permitting a mold cavity to fill in an unbalanced manner as a result of a gas channel formed in a wall of the mold, closing the injection nozzle; and injecting a pressurized gas into the short shot of injection molding material, wherein the pressurized gas travels through the gas channel into a rim portion of the mold thereby expanding the injection molding material throughout the mold and simultaneously creating a hollow cavity within the rim portion of the mold.
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Knicklebine Dave P.
Laabs, Jr. Bruce A.
Rice Frank J.
Ames Planter, Inc.
Eckert Seamans Cherin & Mellott , LLC
McDowell Suzanne E.
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