Method of producing foamed construction materials

Details Method of producing foamed construction materials Method of producing foamed construction materials

1980-03-10

1982-02-09

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

With pore forming in situ

65146, 164 79, 264 455, 264DIG14, C03B 1908

Patent

active

043148352

ABSTRACT:
An improved article made of foamed glass or similar materials and method of manufacture is disclosed. Thus, a construction panel may be formed to bear weight, withstand weather and take reasonable impact and abuse, because of a tempered outer skin supported inside by a skeletal network of solid poreless material formed about low density pockets of substantially constant size and frequency.
These panels are made by continuous pulling of the panels through a heat controlled mold in contact with the surface skin from a continuously fed molten mass into which is injected from the bottom size and frequency controlled foaming agents or gaseous bubbles which rise in the molten mass to a position where they are frozen in place.

REFERENCES:
patent: 2215223 (1940-09-01), Lytle
patent: 2248717 (1941-07-01), Nash
patent: 2261022 (1941-10-01), Fox et al.
patent: 2272930 (1942-02-01), Black
patent: 2354807 (1944-08-01), Fox et al.
patent: 2364317 (1944-12-01), Schaefer
patent: 3305902 (1967-02-01), Bjorksten
patent: 3857914 (1974-12-01), Aishima et al.
patent: 3941182 (1976-03-01), Bjorksten et al.

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