Fiber cement products and methods for the production thereof
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United States of America
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Feb 18, 2025
Grant Date -
Nov 17, 2022
app pub date -
Sep 4, 2020
filing date -
Sep 4, 2020
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Abstract
The present invention relates to fiber cement products comprising a first layer, which first layer is covered by at least one second layer, characterized in that said first layer is the top layer and the first layer material has a density of between about 0.4 and about 0.9 g/cm3 inclusive, and at least comprises cement and between 1 wt % and 70 wt % (relative to the total dry weight of said first layer material) of a lightweight filler, and said at least one second layer is the bottom layer and covers only one of the main surfaces of the first layer, thereby forming a bi-layered fiber cement product, wherein the second layer material has a density of between about 0.9 and about 1.4 g/cm3 inclusive, and at least comprises fibers and cement.
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