Hardboard-like panel

Stock material or miscellaneous articles – Sheet including cover or casing

Patent

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Details

428 74, 4283044, 428489, 428490, 428920, B32B 1102, B32B 1104

Patent

active

045144486

ABSTRACT:
Hardboard-like panel having a core of wood fibres intimately mixed with asphalt forming 10-30% by weight of the core. The core is porous and contains 50% by volume of air cells. A resin-impregnated paper is glued to the core. The panel is preferably coated with a long life thermosetting acrylic finish, and used as an exterior siding. A process for making same is also described.

REFERENCES:
patent: 1927879 (1933-09-01), Spafford
patent: 1942162 (1934-01-01), Campbell
patent: 2325055 (1943-07-01), Heritage
patent: 4301198 (1981-11-01), Prior
patent: 4399186 (1983-08-01), Lauderback

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