B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/38 (2006.01) B29B 7/42 (2006.01) B29B 7/48 (2006.01) B29C 47/64 (2006.01)
Patent
CA 2506856
A mixing section (10,50,60) for mixing material in an extruder (8) having a barrel (32). The mixing section (10,50,60) includes a screw (14) having a central shaft (16), and a floating annular sleeve (12) located between the screw (14) and the barrel (32), and surrounding a portion of the screw (14). The sleeve (12) has mixing elements (28) protruding radially inward toward the screw (14). A portion of the central shaft (16) has mixing elements (18) protruding radially outward toward the sleeve (12). The mixing elements (18) on the screw (14) and the sleeve (12) create multiple regions of reorientation (2) in the material to be mixed which produce improved dispersive mixing.
L'invention concerne une section de mélange (10, 50, 60) servant à mélanger une matière dans un extrudeur (8) pourvu d'un cylindre (32). Ladite section de mélange (10, 50, 60) comprend une vis (14) dotée d'une tige centrale (16), et un manchon annulaire flottant (12) situé entre la vis (14) et le cylindre (32) et entourant une partie de la vis (14). Ce manchon (12) présente des éléments de mélange (28) qui ressortent radialement vers l'intérieur, en direction de la vis (14). Une partie de la tige centrale (16) possède des éléments de mélange (18) qui ressortent radialement vers l'extérieur, en direction du manchon (12). Ces éléments de mélange (18) sur la vis (14) et le manchon (12) permettent de créer plusieurs régions de réorientation (2) dans la matière à mélanger, ce qui permet de produire un mélange dispersif amélioré.
Gowling Lafleur Henderson Llp
Rauwendaal Extrusion Engineering Inc.
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