Boards

Details Boards Boards

B - Operations, Transporting

32

B

154/114, 154/69,

B32B 19/06 (2006.01) B28B 1/50 (2006.01) B28B 1/52 (2006.01) B28B 11/08 (2006.01) B28B 11/24 (2006.01) B28B 13/04 (2006.01) B28B 19/00 (2006.01) B32B 29/00 (2006.01) D21H 27/32 (2006.01) E04C 2/04 (2006.01) E04C 2/26 (2006.01)

Patent

CA 1214716

- 21 - ABSTRACT IMPROVEMENTS IN OR RELATING TO BOARDS 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.

455681

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