C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/104, 154/69,
C04B 16/02 (2006.01) B28B 1/52 (2006.01) B28B 17/02 (2006.01) C04B 11/00 (2006.01) C04B 14/38 (2006.01) C04B 28/14 (2006.01) E04C 2/04 (2006.01)
Patent
CA 2009176
A continuous process fox the production of gypsum board of variable yet predictable density, wherein a fibrous form of stucco produced from gypsum crystals or fibers is combined with standard calcined gypsum and formed into the board. The density of the resultant board varies inversely with the content of fibrous stucco. The process yields lightweight boards suitable as standard wallboards and inorganic insu- lating boards.
Bpb Acquisition Inc.
Celotex Corporation (the)
Gowling Lafleur Henderson Llp
LandOfFree
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