Method for filling an injection mold

Details Method for filling an injection mold Method for filling an injection mold

1992-04-08

1993-10-12

Heitbrink, Tim

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Flash or sprue removal type

249 64, 249102, 2643289, 26432812, 425190, 425192R, 425556, 425573, B29C 4540

Patent

active

052522806

ABSTRACT:
An injection mold capable of being filled from the center is a gated mold with at least one repositionable subgate. The subgate permits simplified removal of the central portion of the molded article, while at least substantially eliminating secondary treatment of the molded article.

REFERENCES:
patent: 2424235 (1947-07-01), Hoffer
patent: 2571766 (1951-10-01), Saulino
patent: 3044120 (1962-07-01), Wiskoff et al.
patent: 3120680 (1964-02-01), Villasana
patent: 3779506 (1973-12-01), Adams
patent: 4126292 (1978-11-01), Saeki et al.
patent: 4332537 (1982-06-01), Slepcevic
patent: 4861251 (1989-08-01), Moitzger
patent: 4861534 (1989-08-01), Boehm et al.
patent: 5175007 (1992-12-01), Elliott

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