E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
E04C 2/288 (2006.01) B32B 13/00 (2006.01) E04B 1/86 (2006.01) E04B 2/74 (2006.01) E04B 9/04 (2006.01) E04C 2/04 (2006.01) E04B 1/82 (2006.01) E04B 1/84 (2006.01)
Patent
CA 2435052
A unitary wall or ceiling panel comprising of a first solid layer solidified gypsum and a second layer of a solidified gypsum having a plurality cavities. The second layer is engaged with the first layer and disposed from one side thereof . The cavities each including anhydrate material of a kind having a water content dependent volumetric displacement. The cavities have been formed by the volumetric shrinking of the anhydrate material resultant from the dissipation of water from the unitary panel gypsum wet phase precursor during its curing to a solidified state.
Applied Science Research Foundation Limited
Macpherson Leslie & Tyerman Llp
Tucker Irvine Mark
Unitec Institute Of Technology
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