Composite building material
AssigneeJames Hardie International Finance B.V.
InventorsHarvey Dale DeFord, James A. Gleeson, Donald J. Merkley
Life of this patent
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Abstract
This invention generally pertains to a composite building material comprising a lightweight core with a thin fiber cement facing on one side of the core and a second facing material on the other side. The fiber cement facing that is used on at least one of the faces of the building material is 3/16″ or less, more preferably ⅛″ or less. The green fiber cement facing is preferably formed by a slurry-dewatering process to form a sheet that is in a plastic, uncured, state prior to manufacture of the composite. The composite building material is assembled in an uncured state and then cured.
Claims24
A building material, comprising:
- a first component, wherein the first component comprises a pre-formed fiber cement layer having a density of between about 53 to 115 lb/ft3 and a fiber content between about 5-12 wt. %;
- a second component positioned adjacent the first component, wherein at least a portion of the components forms interpenetrating mechanical and chemical bonding with the other components;
- and
- wherein the fibers of the first component extend in a substantially planar orientation substantially parallel to a surface of the pre-formed fiber cement layer.
A building material, comprising:
- a first component wherein the first component comprises a pre-formed fiber cement layer comprising about 5-12 wt. % cellulose fibers, wherein the cellulose fibers of the first component extend in a substantially planar orientation substantially parallel to a surface of the pre-formed fiber cement layer;
- and
- a second component positioned adjacent the first component, wherein at least a portion of one of the components is bonded to the other component.
A building material, comprising:
- at least a first component and a second component provided adjacent said first component, wherein the second component comprises a lightweight core having a first side and a second side, and the first component comprises a pre-formed fiber cement facing on at least the first side of the core, wherein the core includes a plurality of vertical symmetrically opposed corrugated core layers.
Dependencies are inferred from the claim text.