Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1980-06-02
1981-12-01
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
156 39, 156 42, 156 43, 428215, 428310, 428313, 428317, 428703, B32B 702, B32B 1302, B32B 1304
Patent
active
043037224
ABSTRACT:
Blocks or panels 10, more especially of porous or cellular structure, are faced with a fabric or web inorganic fibres, preferably in the form of glass fibre tissue, bonded to the block or panel by a composition 14 of thermosetting condensation polymer and gypsum, preferably in a ratio between 1:1.6 and 1:4.0. The amount of the composition is preferably such as to provide a film of minimal thickness over the surface of the fabric or web, corresponding to a glass: resin plus gypsum proportion of 8 to 25%. Such coatings when applied to foamed plastics, chip-board or glass fibre panels provide boards suitable for ceilings or partitions and having ample strength and flame resistance. The blocks or panels may be made continuously by applying fibrous tissues, impregnated with a fluid mixture of plaster and resin by roller spreaders, to the face of panel elements supported between release sheets, for example of polypropylene. Pressure may be applied and maintained, if desired, until the fluid mixture has set.
REFERENCES:
patent: 3984266 (1976-10-01), Christensen et al.
patent: 3993822 (1976-11-01), Knauf et al.
patent: 4133928 (1979-01-01), Riley et al.
patent: 4159361 (1979-06-01), Schupack
patent: 4203788 (1980-05-01), Clear
Didrick Robert M.
Kurlandsky Samuel
Robinson Robert H.
Van Balen William J.
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