The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1976
Filed:
Aug. 26, 1974
Nickolas N Sokolow, Roscoe, IL (US);
Beloit Corporation, Beloit, WI (US);
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.