Mold gate permitting the introduction of stiff molding compound

Details Mold gate permitting the introduction of stiff molding compound Mold gate permitting the introduction of stiff molding compound

1980-01-04

1981-09-15

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

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

With coupling between charger and mold

2643289, B29C 100

Patent

active

042894735

ABSTRACT:
A gate member for admitting plastic material into a mold which comprises a hollow member defining a bore having a longitudinal axis and an inner wall for separating the bore from a mold chamber positioned between mold halves. Aperture means extends through the inner wall, being peripherally spaced from the longitudinal axis and preferably defining an angle of essentially 30.degree. to 60.degree. to the longitudinal axis, diverging outwardly in the direction of the mold chamber. Also, preferably, the inner wall defines a centrally-positioned peak pointing toward the bore and having sloping sides, to assist in directing molten plastic toward the peripherally spaced aperture means. Also, rib means may be provided, pointing inwardly and extending radially from the central portion of the inner wall toward the periphery thereof, to reinforce the inner wall.

REFERENCES:
patent: 2437625 (1948-03-01), Taylor
patent: 3134141 (1964-05-01), Hardy
patent: 3696840 (1972-10-01), Odhner
patent: 3704723 (1972-12-01), Wheaton
patent: 3936261 (1976-02-01), Jones
patent: 4033485 (1977-07-01), Kohler

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