Low pressure laminate gas assist molding

Details Low pressure laminate gas assist molding Low pressure laminate gas assist molding

2007-02-27

2007-02-27

McDowell, Suzanne E. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

C264S572000

Reexamination Certificate

active

10707591

ABSTRACT:
A system and process for gas-assisted injection molding of plastic materials to form laminate-type products. A laminate material is positioned in a mold and the mold is closed to a pre-set position, leaving a gap. Plastic material is injected into the mold cavity onto the laminate material, and gas is injected into the plastic material. Thereafter, the mold is closed, compressing the gas in the plastic material. Once the process is complete and the plastic has cooled, the gas is vented from the molded component, the mold is opened, and the completed molded part is removed.

REFERENCES:
patent: 4968474 (1990-11-01), Ito
patent: 5277865 (1994-01-01), Hara et al.
patent: 6506335 (2003-01-01), Matsumoto et al.

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