Fiber reinforced cement board and manufacturing process
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United States of America Patent
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May 25, 2010
Issued Date -
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app pub date -
Apr 25, 2006
filing date -
Apr 25, 2006
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Abstract
Provided is a fiber reinforced cement board having good installation properties such as nail performance, flexibility performance and handling performance, as well as other favorable physical properties.The board has an absolute dry specific gravity of not less than 1.20 and not more than 1.30 and comprises as raw materials not less than 28% by mass and not more than 32% by mass of a hydraulic inorganic material, not less than 54% by mass and not more than 58% by mass of a siliceous material, not less than 8% by mass and not more than 12% by mass of a woody reinforcement, not less than 2% by mass and not more than 5% by mass of mica, and not less than 0.5% by mass and not more than 1.25% by mass of a water-soluble resin.
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