Agitating – Rubber or heavy plastic working – Stirrer is through-pass screw conveyor
Patent
1980-07-08
1982-04-13
Coe, Philip R.
Agitating
Rubber or heavy plastic working
Stirrer is through-pass screw conveyor
366149, 366305, 425378R, B29B 106, B29B 300
Patent
active
043244939
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 headplate for connection with an extruder barrel and a headplate for connection with an extrusion head, the disk having an axial circular aperture; an advancement screw sealingly rotatable within the blocks, connectable with a screw of the extruder to constitute an extension of this latter screw, the advancement screw having an intermediate barrier section sealingly rotatable in the aperture of the 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 headplates, blocks and disk for the circulation of a coolant liquid for the two blocks.
REFERENCES:
patent: 3416774 (1968-12-01), Fritsch
patent: 4222729 (1980-09-01), Ragazzini et al.
patent: 4235581 (1980-11-01), Anders
Coe Philip R.
Lavorazione Materie Plastiche L.M.P-S.p.A.
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