Method and apparatus for extruding material

Details Method and apparatus for extruding material Method and apparatus for extruding material

B - Operations, Transporting

29

C

B29C 47/38 (2006.01) B29C 47/24 (2006.01) B29C 47/52 (2006.01)

Patent

CA 2402444

A method and an apparatus for extruding material, the material being extruded with an apparatus comprising at least one rotatable rotor (3) and at least one stator (1, 2), the rotor (3) and the stator (1, 2) comprising grooves (8, 9), whereby the grooves (8, 9) make the material move through the apparatus when the rotor (3) is rotated. The rotor (3) and stator (1, 2) surfaces facing each other have a wavelike cross-section, and the grooves (8, 9) are so arranged that at the ridge of a wave the depth of a groove (8, 9) reaches its maximum, and at the bottom of a wave the depth reaches its minimum. The bottom of the wave in the rotor (3) is at the ridge of the wave in the stator (1, 2) and vice versa. This makes the material move alternately from a rotor (3) groove (8) to a stator (1, 2) groove (9), and back.

L'invention concerne un procédé et un dispositif permettant d'extruder un matériau. Le matériau est extrudé à l'aide d'un dispositif comprenant au moins un rotor rotatif (3) et au moins un stator (1, 2). Le rotor (3) et le stator (1, 2) sont pourvus d'encoches (8, 9), qui permettent le déplacement du matériau à travers le dispositif pendant la rotation du rotor (3). Les surfaces du rotor (3) et du stator (1, 2) sont placées face à face et présentent des sections transversales ondulées. Les encoches (8, 9) sont disposées de telle sorte qu'à la crête de l'ondulation, le creux de l'encoche (8, 9) soit au maximum, et qu'au fond de l'ondulation, le creux soit au minimum. Le fond de l'ondulation dans le rotor (3) se trouve à la crête de l'ondulation du stator (1, 2) et vice versa. Ceci permet un déplacement alternatif du matériau depuis une encoche (8) du rotor (3) vers une encoche (9) du stator (1, 2) et inversement.

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