E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
E04C 2/04 (2006.01)
Patent
CA 2580350
A wallboard (10, 20, 30) comprising a gypsum layer (12, 22, 32) and a cellulose-based layer (14, 24, 34) comprising zinc oxide covering at least a portion of a surface of the gypsum layer (12, 22, 32) is disclosed. The zinc oxide can be impregnated into the cellulose-based layer (14, 34), or coated on a surface of the cellulose-based layer (14, 34). The zinc oxide can also be incorporated into the gypsum layer (22, 32). The zinc oxide can have a specific surface of from 2 m2/gram to 100 m2/gram. A method of making gypsum wallboard (10, 20, 30) is also disclosed.
L'invention porte sur un panneau de revêtement (10, 20, 30) qui comprend une couche de gypse (12, 22, 32) et une couche à base de cellulose (14, 24, 34) comprenant un oxyde de zinc qui recouvre au moins une partie de la surface de la couche de gypse (12, 22, 32). L'oxyde de zinc peut imprégner la couche à base de cellulose (14, 34) ou recouvrir l'une de ses surfaces. L'oxyde de zinc peut également être incorporé dans la couche de gypse (22, 32). L'oxyde de zinc peut posséder une surface spécifique comprise entre 2 m2/gramme et 100 m2/gramme. L'invention se rapporte aussi à un procédé de fabrication d'un panneau de revêtement en gypse (10, 20, 30).
Horsehead Corp.
Ridout & Maybee Llp
LandOfFree
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