Preheating and dosing apparatus

Details Preheating and dosing apparatus Preheating and dosing apparatus

B - Operations, Transporting

29

B

18/761

B29B 13/02 (2006.01) B29B 7/48 (2006.01) B29C 47/40 (2006.01) B29C 47/84 (2006.01)

Patent

CA 1311340

ABSTRACT An apparatus for preheating and dosing plastic which is to be fed to an extruder consists of a housing 3 with a heatable casing and a double worm screw (1,2) mounted at both ends in the housing 3 and turning oppositely. The two worm screws (1,2) of the double worm screw are hollow, such that the hollow cavity (8) serves to accept a heating medium, for example hot water, for the purpose of heating the worm screws (1,2). The apparatus allows the working material to be uniformly heated, and precisely metered to the extruder. (Fig. 2).

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