Cap means for preventing resin from remaining in a mold of a run

Details Cap means for preventing resin from remaining in a mold of a run Cap means for preventing resin from remaining in a mold of a run

1982-11-30

1985-02-26

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

425548, 425566, 425571, B29F 103

Patent

active

045015503

ABSTRACT:
This invention relates to cap means for preventing resin from remaining in a mold of a runnerless injection molding apparatus. The cap means is of a frusto-conical profile and incorporated in a space formed adjacent to a front end of a heating cylinder. Further, the cap means is provided with an opening from which a pointed tip member of the heating cylinder can project. The invention aims at removing resin scorching, its thermal decomposition, inconveniences of color or material exchange or the like.

REFERENCES:
patent: 4161386 (1979-07-01), Osuna-Diaz
patent: 4173448 (1979-11-01), Rees et al.
patent: 4212625 (1980-07-01), Shutt
patent: 4268241 (1981-05-01), Rees et al.
patent: 4276015 (1981-06-01), Rogers
patent: 4312630 (1982-01-01), Travaglini

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