METHOD FOR THE MANUFACTURE OF A BUILDING PRODUCT
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United States of America Patent
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Issued Date -
Jan 21, 2010
app pub date -
Sep 1, 2006
filing date -
Sep 1, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The method includes providing a rigid mould (8, 150) with at a re-entrant cavity (96, 196). Mouldable material is provided on the rigid mould and the re-entrant cavity is filled to form a hook-like protuberance (36) on a surface of the moulded building product to facilitate, in use, the attachment of the building product to the structure of a building. The mouldable material sets to form a building product. The building product is removed from the mould. The re-entrant cavity has a resilient portion to facilitate the removal of the building product without detrimental affect to the hook-like protuberance. The so-formed building products have a greater resistance to inclement weather conditions. The building product may be a concrete roof tile formed by a roller and slipper extrusion method, a clay tile made by pressing in a clay tile press, or a cast concrete roof tile.
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