Apparatus for producing rigid foam plastic insulating panels

Details Apparatus for producing rigid foam plastic insulating panels Apparatus for producing rigid foam plastic insulating panels

1977-11-08

1979-04-17

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

Cooperating endless belts

425 4C, 425389, 264 463, B29C 1500

Patent

active

041498402

ABSTRACT:
An apparatus is disclosed for making foam plastic insulating panels. The apparatus has a lower conveyor band forming a support surface and a first continuous form belt on the support surface and an upper conveyor band forming a limiting surface and a second continuous form belt on the limiting surface. The conveyor bands are supported for rotation between conventional tires, the inflation of at least one of the tires controls the pressure on the form belts adjacent their initial point of contact. Resilient metal clips are provided which lock the support and limiting surfaces together during curing of the foam plastic panel.

REFERENCES:
patent: 1580519 (1926-04-01), Meyer
patent: 2007910 (1935-07-01), Stephens
patent: 3215581 (1965-11-01), Carlson et al.
patent: 3462795 (1969-08-01), Hermanns
patent: 3700368 (1972-10-01), Wells
patent: 3736081 (1973-05-01), Yovanovich
patent: 3763993 (1973-10-01), Whikehart et al.
patent: 3773167 (1973-11-01), McGinnis
patent: 3827846 (1974-08-01), Weiler et al.
patent: 3941543 (1976-03-01), Buonanno

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