Polymer pelletizer

Details Polymer pelletizer Polymer pelletizer

1984-06-25

1986-04-15

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

With separate apparatus cleaning means

425461, B29C 4712

Patent

active

045824738

ABSTRACT:
A pelletizing apparatus is provided with a first passage through which a strand of liquified plastic is fed to a die face. A second passage intersects the first at a point closely spaced from the die face and conducts a stream of pressurized fluid. The end of the strand of plastic forms a plug blocking continued passage of the polymer. Build-up of pressure of the fluid overcomes the blocking force of the plug, cutting the strand at the intersection and ejecting the plug as a pellet. Release of the fluid pressure permits the plastic strand to advance and block the exit whereupon the fluid pressure builds up to again eject the plug. Repeated self-regulating cycles cause a stream of pellets to be formed.

REFERENCES:
patent: 2341704 (1944-02-01), Ervin
patent: 2508462 (1950-05-01), Marshall
patent: 2605502 (1952-08-01), Culpepper et al.
patent: 3181201 (1965-05-01), Seiz
patent: 3213170 (1965-10-01), Erdmenger et al.
patent: 3309734 (1967-03-01), Bynum et al.
patent: 3792950 (1974-02-01), Cuff
patent: 4070138 (1978-01-01), Stanwood
patent: 4189455 (1980-02-01), Raganato et al.

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