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US 2014/0242862 A1Published application
Methods of making smooth reinforced cementitious boards
AssigneeSaint-Gobain Adfors Canada, Ltd.
InventorJohn F. Porter
Life of this patent
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Abstract
Methods and a reinforcement fabric are disclosed for making a reinforced smooth cementitious board having a cement skin adjacent to an outer face, by depositing a reinforcement fabric and a layer of hydraulic cementitious material, one on the other, wherein the reinforcement fabric comprises an open mesh united with a thin, porous nonwoven web.
Claims19
A reinforcement fabric for reinforcing a smooth cementitious board, wherein the reinforcement fabric comprises:
- an open mesh united with a porous nonwoven web, wherein the open mesh is configured to be penetrated by a layer of hydraulic cementitious material, and wherein the porous nonwoven web comprises polypropylene fibers configured to promote penetration of the porous nonwoven web by at least a portion of the layer of hydraulic cementitious material to form a cement skin adjacent to an outer face of the smooth cementitious board.
Dependencies are inferred from the claim text.