Pressless injection molding apparatus

Details Pressless injection molding apparatus Pressless injection molding apparatus

1975-02-19

1976-08-03

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

4254501, 4254519, B29F 100

Patent

active

039726681

ABSTRACT:
The apparatus of this invention relates to an injection molding device having separable mold plates into which fluid plastic is injected to form an article and which utilizes the injection pressure of the fluid plastic to generate forces sufficient to overcome the internal forces urging the mold plates apart and thus hold the mold plates together until the material being molded solidifies either by cooling, chemical reaction or phase change.

REFERENCES:
patent: 2389169 (1945-11-01), Stacy
patent: 2433132 (1947-12-01), Lester
patent: 3071814 (1963-01-01), Guggenheim
patent: 3158089 (1964-11-01), Fillol
patent: 3346924 (1967-10-01), Lombard
patent: 3776998 (1973-12-01), Church
patent: 3782879 (1974-01-01), Mnilk et al.
patent: 3833333 (1974-09-01), Britten
"Modern Plastics Encyclopedia", 1972-1973; vol. 49: No. 10A, pp. 612, 616.

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