Method and apparatus for extruding cementitious articles
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United States of America Patent
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Issued Date -
Aug 7, 2003
app pub date -
Feb 11, 2003
filing date -
Dec 15, 1999
priority date (Note) -
Abandoned
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Abstract
A method and apparatus (20) for extruding fibre cement. The extruder comprises a casing (30) with a pair of inter-meshing self-wiping screws (40) rotatably mounted therein. The screws continuously mix and or knead the components of the fibre cement provided through various feed means (61, 62) to form a substantially homogeneous paste and force the paste through a die (50) to form a green cementitious extrudate suitable for curing.
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