Method of forming fire retardant printed wood paneling

Details Method of forming fire retardant printed wood paneling Method of forming fire retardant printed wood paneling

1977-11-15

1980-04-29

McCamish, Marion E.

Coating processes

Nonuniform coating

Applying superposed diverse coatings or coating a coated base

427291, 428921, B05D 312, B05D 136, B05D 300

Patent

active

042006732

ABSTRACT:
Printed wood paneling having a reduced flame spread rating is provided by embossing the wood surface to be finished to depress in a relatively uniform pattern of depressed portions at least about 20% up to about 70% of the surface area of the wood to a depth of at least about 0.01 inch, and these depressed portions are then filled with an intumescent fire retardant filler and the excess filler is substantially removed from the undepressed portions of the wood surface. The embossed panel with the depressed portions thereof filled with intumescent fire retardant filler is then finished in conventional fashion by applying a filler, sanding, base coating, printing, and usually embossing. A clear topcoat is then applied to protect the finish. When a flame impinges upon the finished surface, the heat is transmitted to the buried intumescent material causing expansion of this material and the production of a uniform pattern of raised portions of difficultly burnable foam insulating material which retards the flame spread rate.

REFERENCES:
patent: 3247047 (1966-04-01), Buckley
patent: 3454413 (1969-07-01), Miller
patent: 3811992 (1974-05-01), Hanada et al.
patent: 3936541 (1976-02-01), Plowman et al.
patent: 4024310 (1977-05-01), Wooler et al.
patent: 4068031 (1978-01-01), Cooley et al.
patent: 4086382 (1978-04-01), Hites

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