Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1978-08-31
1981-01-13
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
523095, 5230911, 52602, 156 71, 156 79, 264 465, 264251, 264263, 428 55, 428310, B29D 2704
Patent
active
042449014
ABSTRACT:
A prefabricated structural element and a method of bonding wallboard to structural elements such as trusses for use in construction or prefabrication of ceilings or walls. The method involves applying a resilient polyurethane foamable liquid by a high pressure impingement mixing spray gun onto areas of a clean, dry wallboard substrate which have wood trusses or studs placed upon them. The foam is sprayed on the drywall at the juncture with the wood members on both sides of the wooden members. The resulting bonded structure permits the unit to be used without further nailing or other attachment means. The foam also permits the combined product to present a flat surface regardless of irregularities in the wood trusses.
REFERENCES:
patent: 3258889 (1966-07-01), Butcher
patent: 3300931 (1967-01-01), Lutze
patent: 3315424 (1967-04-01), Smith
patent: 3722171 (1973-03-01), Godley
patent: 3885008 (1975-05-01), Martin
patent: 4083916 (1978-04-01), Chasse
patent: 4125979 (1978-11-01), McLaughlin
Bender, Rene J. "Handbook of Foamed Plastics," Libertyville, Ill., Lake Publishing Corp., .COPYRGT.1965, pp. 132, 163, 164.
Headley Duane L.
Wencley Stanley E.
Anderson Philip
Foamseal, Inc.
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