Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling fluid pressure in direct contact with molding...
Reexamination Certificate
2007-08-14
2007-08-14
McDowell, Suzanne E. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling fluid pressure in direct contact with molding...
C264S572000, C425S149000
Reexamination Certificate
active
10904396
ABSTRACT:
A method and system for controlling a fluid-assisted injection molding process for producing a molded plastic article. The fluid can be gas, water or another fluid. One or more pressure transducers are positioned in the mold cavity and generate signals to control the initiation of the pressurized fluid, the packing of the material in the mold and/or the switchover from the packing phase to the holding phase. The transducers can be positioned at or near the gate or pre-gate, at or near the fluid channel area, and/or at or near the end of the fill area.
REFERENCES:
patent: 5707659 (1998-01-01), Erikson
patent: 2208200 (1990-05-01), None
patent: 07132531 (1995-05-01), None
patent: 11170289 (1999-06-01), None
patent: WO-98/39150 (1998-09-01), None
Hendry James
Homann Gregory A.
LaFontaine Earl
Lear Corporation
McDowell Suzanne E.
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