Lost core plastic molding process for transferring,...

Details Lost core plastic molding process for transferring,... Lost core plastic molding process for transferring,...

2003-03-28

2008-03-18

Huson, Monica A (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S221000, C264S225000, C264S271100, C264S313000

Reexamination Certificate

active

07344670

ABSTRACT:
A method of producing a molded article includes the steps of positioning an insert within a first mold, and filling the first mold with a low melt allow to form a lost core assembly. The lost core assembly includes an external shape corresponding to the desired cavity formed within the molded article. The inserts are supported within the lost core and form a part of the surface of the cavity of the completed molded article. The lost core assembly is over-molded with a thermoplastic or thermoset material. The alloy material is removed leaving the inserts within the molded article to form specific portions of the cavity.

REFERENCES:
patent: 4743481 (1988-05-01), Quinlan et al.
patent: 5614143 (1997-03-01), Hager
patent: 6547210 (2003-04-01), Marx et al.
patent: 2002/0195741 (2002-12-01), Jessberger et al.
patent: 1065353 (2001-01-01), None
patent: 02001062845 (2001-03-01), None
patent: WO0138059 (2001-05-01), None

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