Agitating – Rubber or heavy plastic working – Stirrer is through-pass screw conveyor
Patent
1985-06-07
1986-02-11
Coe, Philip R.
Agitating
Rubber or heavy plastic working
Stirrer is through-pass screw conveyor
366149, B29B 110
Patent
active
045695954
ABSTRACT:
The cylinder of the extruder comprises two parts separated by a heat-insulating gasket. In the wall of the upstream part there are ducts through which a cooling fluid flows. The inside surface of the upstream part is provided with parallel longitudinal grooves or spiralling grooves. The screw is divided into two zones, viz., a feed zone and a plasticizing zone which starts just after the heat-insulating gasket. The plasticizing zone includes an entry channel which gradually decreases in depth downstream and an exit channel which gradually increases in depth downstream. The mass of plastic material leaving the extruder is homogeneous and at a predetermined temperature with high output, as independently as possible of the material used.
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Coe Philip R.
Maillefer S.A.
Stinson Frankie L.
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