Colored building boards, manufacturing methods thereof

E - Fixed Constructions – 04 – C

Patent

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Details

E04C 2/24 (2006.01) B32B 7/02 (2006.01) B32B 21/04 (2006.01)

Patent

CA 2333240

There is provided a building board which is colored by mixture of a pigment(s) into the raw materials and exhibiting an excellent color development effect. A pigment and a resin(s) are incorporated into the raw materials of the front layer to form a resin film simultaneously with cement curing, thereby blocking the inflow or outflow of water through the surface of the substrate to provide a cement board with good waterproofness. The cement board obstructs the efflorescence generation and exhibits an excellent pigment color development effect.

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