Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1982-02-12
1984-10-30
Moon, Charlie T.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
29428, 29460, 52405, 264233, B29D 300, B29H 900
Patent
active
044799160
ABSTRACT:
A method of making a building panel comprises the steps of (i) casting a first or inner layer of reinforced concrete which has an obverse face and a smooth reverse face; casting a second or outer, ribbed layer of reinforced concrete which has an obverse face and a smooth reverse face; placing the first and second layers adjacent one another with the two obverse faces directed inwardly towards one another; and providing a layer of thermal insulation material between the two obverse faces. By this method a panel can be provided of which the faces are both smooth.
REFERENCES:
patent: 1897327 (1933-02-01), Olson
patent: 2047109 (1936-07-01), Nagel
patent: 2273775 (1942-02-01), Strong
patent: 2477381 (1949-07-01), Lewis
patent: 3984957 (1976-10-01), Piazza
patent: 4206163 (1980-06-01), De Coster
patent: 4394201 (1983-07-01), Haeussler
Blatchford John M. A.
Moon Charlie T.
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