Boards

Details Boards Boards

1984-05-25

1985-11-05

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

156 78, 156 79, 162101, 1621818, 4283179, 4283184, B32B 518, B32B 904, B32B 1900

Patent

active

045513848

ABSTRACT:
A board of sandwich construction which comprises two outer preformed support membranes consisting of or comprising fibrous material, the said membranes having interposed therebetween an aerated intermediate layer comprising at least 70% by weight based on the dry board of an unfired clay which contains less than 20% by weight of expandable minerals and the intermediate layer also including fibres therein.
The boards of the present invention are intended mainly for use as plasterboard substitute.

REFERENCES:
patent: 3528846 (1970-09-01), Celmer et al.
patent: 4348452 (1982-09-01), Paolo et al.
patent: 4395456 (1983-07-01), Jackson et al.
patent: 4442164 (1984-04-01), Briggs et al.

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