Method of making a building panel

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

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Details

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

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