Extrusion apparatus for manufacturing foamed thermoplastic mater

Details Extrusion apparatus for manufacturing foamed thermoplastic mater Extrusion apparatus for manufacturing foamed thermoplastic mater

1978-08-30

1980-05-06

Anderson, Philip

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

264 53, 366144, 366337, 425461, 425817C, B01F 304, B01F 506, B01F 1500, B01F 1506

Patent

active

042014808

ABSTRACT:
Extrusion apparatus for manufacturing blow moulded sheets of expanded polystyrene wherein, following an extruder there is a static cooler/mixer member comprising inner and outer cooling surfaces defining between them an annular passage, the inner cooling surface having a star-shaped outline when viewed in cross-section with the points of the star extending at an oblique angle to the longitudinal axis. Preferably the star-shaped outline is provided by folded metal strips several of which are provided alternately angled and staggered with respect to one another.

REFERENCES:
patent: 3358749 (1967-12-01), Chisholm et al.
patent: 3582045 (1971-06-01), Leybourne
patent: 3652061 (1972-03-01), Chisholm
patent: 3687582 (1972-08-01), Hendry et al.
patent: 3704006 (1972-11-01), Grout et al.
patent: 3711067 (1973-01-01), Kovacs
patent: 3751377 (1973-08-01), Buckner
patent: 3942765 (1976-03-01), Hendrickson
patent: 4040256 (1977-08-01), Bosche et al.

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