Extrusion head

Details Extrusion head Extrusion head

1978-03-13

1980-08-12

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

Upstream of multi-orifice shaping die

99509, 99537, 425199, 425204, 425376R, 425382R, 425463, A21C 304

Patent

active

042170834

ABSTRACT:
Dough is extruded from a screw extruder through a nozzle, preferably a twin-slot nozzle, and an apertured blocking plate is placed between the tip of the extrusion screw and the nozzle assembly for making the pressure distribution across the dough in a pressure equilization chamber between the blocking plate and the nozzle more uniform and for controlling the rate of flow of the dough towards the extrusion nozzle slots. The blocking plate has two series of parallel channels arranged on two opposed arcs of the same circle centered on the central axis of the nozzle (the axis of the extrusion screw) and the series are symmetrical about a plane of symmetry of the nozzle.

REFERENCES:
patent: 1441642 (1923-01-01), Tofanelli
patent: 2408713 (1946-10-01), Webb
patent: 2791187 (1957-05-01), Ambrette
patent: 2838011 (1958-06-01), Braibanti et al.
patent: 3054677 (1962-09-01), Graham, Jr. et al.
patent: 3305893 (1967-02-01), Machen
patent: 3462277 (1969-08-01), Reinhart
patent: 4088433 (1978-05-01), Simpson
patent: 4104015 (1978-08-01), Meyer

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