B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 1/52 (2006.01) B28B 3/22 (2006.01) B28B 17/02 (2006.01) B28C 5/14 (2006.01) B28C 5/40 (2006.01)
Patent
CA 2394453
A method and apparatus (20) for extruding fibre cement. The extruder comprises a casing (30) with a pair of intermeshing 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.
La présente invention concerne un procédé et un dispositif (20) permettant d'extruder du Fibrociment. L'extrudeuse comprend une enceinte (30) comprenant une paire de vis autonettoyantes (40) s'engrenant l'une dans l'autre, montées rotatives dans ladite enceinte. Les vis mélangent et/ou pétrissent en continu les différents composants du Fibrociment introduits grâce à différents éléments d'alimentation (61, 62), afin de former une pâte sensiblement homogène et de faire passer la pâte à travers une filière (50) pour former un produit extrudé à base de ciment vert apte au traitement.
Burwood Richard John
Chen Hong
Goringe Nilmini Sureka
Maxwell Ian Andrew
Blake Cassels & Graydon Llp
James Hardie International Finance B.v.
James Hardie Research Pty Limited
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