Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1980-07-10
1982-04-13
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
425130, 425523, 425548, 425550, 425552, 425574, B29F 100, B29F 105
Patent
active
043245412
ABSTRACT:
Apparatus for producing hollow plastic articles in a hollow die with a relatively smaller reciprocating punch therein. Plastic material is fed from a nozzle aligned with the die, into the die about the punch, the punch being initially advanced into the opening of the die and retracting as the plastic is introduced from the nozzle. When the plastic introduction is completed, then the nozzle is slid laterally on the die until the duct of the nozzle is out of registry with the die and the nozzle thus closes the die. Then the punch is advanced within the closed die to compress the plastic material into the space between the die and the punch.
REFERENCES:
patent: 2773284 (1956-12-01), Kelly
patent: 3023458 (1962-03-01), Seymour
patent: 3305892 (1967-02-01), Heider
patent: 3511845 (1970-05-01), Scalora
patent: 3759315 (1973-09-01), Smart
patent: 4005164 (1977-01-01), Procter
Collombin Andre M.
Curetti Ennio G.
Motosacoche S.A.
Silbaugh Jan H.
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