Molding device having heat transfer chambers insulated from each

Details Molding device having heat transfer chambers insulated from each Molding device having heat transfer chambers insulated from each

1978-05-19

1980-03-11

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to feed measured charge of fluent...

249 79, 249113, 264 51, 425817R, B29D 2700

Patent

active

041926382

ABSTRACT:
A mold for polystyrene has two spaced dies receiving the polystyrene therebetween. The wall of each die has two superposed independent chambers, one a heating chamber and the other a cooling chamber adjacent the die surface. Passages from the heating chamber pass through the cooling chamber and through the die surface and do not communicate with the cooling chamber. The opening of the passages in the die surface may be partially closed by nozzles.

REFERENCES:
patent: 2435170 (1948-01-01), Wachs et al.
patent: 2471739 (1949-05-01), Gregg
patent: 2759230 (1956-08-01), Gordon et al.
patent: 3424827 (1969-01-01), Galizia et al.
patent: 3454988 (1969-07-01), Cremer
patent: 3587134 (1971-06-01), Premo
patent: 3671168 (1972-06-01), Nussbaum
patent: 3837769 (1974-09-01), Erlenbach
patent: 3941528 (1976-03-01), Cotterell

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