Extruder plasticizing and mixing screw

Details Extruder plasticizing and mixing screw Extruder plasticizing and mixing screw

1973-09-17

1976-12-21

Hornsby, Harvey C.

A21C 106, B29B 106

Patent

active

039984389

ABSTRACT:
A screw for use in a thermoplastic extruder. A plurality of recessed pockets and/or raised lobes are in the screw shaft and these operate as the shaft is rotated to constantly shift the melted and unmelted portions of the plastic resin radially inwardly and outwardly within a pitch length of the screw inside the extruder to quickly and uniformly mix the plastic into a homogeneous melt.

REFERENCES:
patent: 2581031 (1952-01-01), Kruzik
patent: 2838794 (1958-06-01), Munger et al.
patent: 3023456 (1962-03-01), Palfey
patent: 3197814 (1965-08-01), Bond, Jr. et al.
patent: 3475788 (1969-11-01), Heston
patent: 3486192 (1969-12-01), Leroy
patent: 3518721 (1970-07-01), Rukas et al.
patent: 3664795 (1972-05-01), Heinz et al.
patent: 3671141 (1972-06-01), Kovacs
patent: 3751015 (1973-08-01), Hensen
patent: 3762693 (1973-10-01), Deboo et al.

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