Cascade type dynamic mixer for extrusion of plastic

Details Cascade type dynamic mixer for extrusion of plastic Cascade type dynamic mixer for extrusion of plastic

1974-08-26

1976-03-23

Jenkins, Robert W.

B01F 708

Patent

active

039456226

ABSTRACT:
A cascade type dynamic mixer for extrusion of plastic comprises extruder screw means to advance a thermoplastic resin material through a hollow barrel, and having a mixing section along a length thereof provided with a plurality of encircling barrier rings in axially spaced relation therealong. The rings have localized high shear cascade areas which are graduated to pass progressively smaller size particles along the mixing section. On each ring, undulations provide alternating plastic advancing and reversing flight lengths, the shear areas being on the reversing flight lengths which are shallower than the plastic advancing flight lengths and progressively higher in each ring downstream along the mixing section.

REFERENCES:
patent: 2631016 (1953-03-01), Kraffe
patent: 3687423 (1972-08-01), Koch
patent: 3719351 (1973-03-01), Upmeier
patent: 3721427 (1973-03-01), Upmeier

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