Apparatus for processing extrudable materials

Details Apparatus for processing extrudable materials Apparatus for processing extrudable materials

B - Operations, Transporting

01

F

B01F 7/08 (2006.01) A21C 11/20 (2006.01) B01F 7/24 (2006.01) B29C 47/40 (2006.01) B29C 47/46 (2006.01)

Patent

CA 2072294

ABSTRACT APPARATUS FOR PROCESSING EXTRUDABLE MATERIALS A method and apparatus are disclosed for processing extrudable materials in such a way as to apply a controlled and predetermined degree of shear force to the materials. Typically, an extruder apparatus comprises a housing having first and second screws mounted therein for rotation on a common axis, the arrangement being such that longitudinal thrust forces exerted by the first screw are at least partially compensated by corresponding forces generated by the second screw, inlet means for introducing material to be processed into the housing and a shear generating device located between said screws, said device including a restriction through which material is forced from said housing to exit from said housing. The restriction is preferably an annular gap formed by a sleeve fixed relatively to the housing and a shaft portion which extends into the sleeve.

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