Flame retardant plywood panel

Details Flame retardant plywood panel Flame retardant plywood panel

1977-11-28

1980-04-01

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428448, 428452, 428454, 428535, 428920, B32B 324

Patent

active

041962427

ABSTRACT:
A flame retardant plywood panel has one or more structural core layers sandwiched between front and back veneer layers. In the preferred embodiment, the veneer layers are coated with an unfired ceramic material which hardens when exposed to a flame and prevents the flame from igniting the core and veneer layers. Perforations are preferably provided in the back of the panel for the ventilation of steam and other gases generated in the panel by exposure to high temperature.

REFERENCES:
patent: 1951983 (1934-03-01), Kellett
patent: 1974465 (1934-10-01), Lewis
patent: 2665460 (1954-01-01), Francek
patent: 3097124 (1963-07-01), Denenberg
patent: 3216167 (1965-11-01), Roberts et al.
patent: 3243313 (1966-03-01), Aves
patent: 3296060 (1967-01-01), Seitzinger

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