Hydraulic hardened foamed product and a method of producing the same
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United States of America Patent
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-
Dec 3, 2002
Grant Date -
N/A
app pub date -
May 26, 2000
filing date -
Nov 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of making a composite product such as a building board, includes the steps of mixing together finely divided lignocellulosic fibres, a hydraulic binder, and water optionally containing a polyvinyl alcohol, to form a paste; introducing a foam generated from a polyvinyl alcohol into the paste and mixing to form a foamed product; forming the foamed product into a desired shape; and allowing the hydraulic binder to set to form the composite product.
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Cited Art Landscape
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