Mixer-cooler device for the extrusion of thermoplastic foams

Details Mixer-cooler device for the extrusion of thermoplastic foams Mixer-cooler device for the extrusion of thermoplastic foams

B - Operations, Transporting

29

C

18/664, 18/730

B29C 47/74 (2006.01)

Patent

CA 1149117

ABSTRACT A mixer-cooler device for the extrusion of thermoplastic foams comprising: a pair of radially foraminous tubular cylindrical blocks, clamped in axial alignment against opposite faces of a barrier disk by means of a head- plate for connection with an extruder barrel and a head- plate for connection with an extrusion head, the said disk having an axial circular aperture; an advancement screw sealingly rotatable within the said blocks, connectable with a screw of the extruder to constitute an extension of this latter screw, the said advancement screw having an intermediate barrier section sealingly rotatable in the aperture of the said disk; a tubular casing sealingly connecting the two headplates to form a tubular collector channel embracing from the outside the foraminous zones of the two blocks; and a system of passages in the said headplates, blocks and disk for the circulation of a coolant liquid for the two blocks.

356633

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