Extrusion apparatus

Details Extrusion apparatus Extrusion apparatus

1977-06-29

1978-12-12

Hornsby, Harvey C.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 89, 366 99, 366323, 425208, A21C 106, B01F 708

Patent

active

041293860

ABSTRACT:
A new extruder screw design incorporating an optimal flight helix angle and flight height in the feed section and metering section and a constantly varying helix angle with a constantly decreasing flight height in the transition section is disclosed; the screw being efficiently fed by use of a grooved section of extruder barrel in the area of the feed section.

REFERENCES:
patent: 3689182 (1972-09-01), Kovacs
patent: 3698541 (1972-10-01), Barr
patent: 3858856 (1975-01-01), Hsu
patent: 3867079 (1975-02-01), Kim
patent: 3905588 (1975-09-01), Reinhart
patent: 3924842 (1975-12-01), Klein
patent: 4015832 (1977-04-01), Kruder

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