Apparatus for manufacturing a foamed article formed or pre-expan

Details Apparatus for manufacturing a foamed article formed or pre-expan Apparatus for manufacturing a foamed article formed or pre-expan

1975-10-22

1978-04-11

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Temperature control

236101R, 249141, 425817R, 425812, B29D 2700

Patent

active

040836657

ABSTRACT:
An apparatus for the manufacture of a foamed molded article or part from pre-expanded polystyrene comprising a hollow mold compartment which communicates with a vapor chamber or compartment at least at the region of one of its walls by means of passageways or openings provided therein. Each passageway or opening is controlled by a valve arrangement responsive to the vapor temperature and which closes such passageway when the vapor temperature exceeds a temperature range contemplated for a limited foaming.

REFERENCES:
patent: 3038664 (1962-06-01), Gould
patent: 3193876 (1965-07-01), Thompson
patent: 3263926 (1966-08-01), Couffer et al.
patent: 3264381 (1966-08-01), Stevens
patent: 3515346 (1970-06-01), Hayner et al.
patent: 3735922 (1973-05-01), Fujiwara

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