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United States Patent 3946998
Douris , ê et al. March 30, 1976

Single worm extruder

Menges , Ê et al. March 30, 1976

Abstract

Single-screw extruder for mixing viscous materials by dividing material in only the forward flow direction in an irregular sequence into a plurality of communicating flow paths which are subjected to constant change between being divided and rejoined. Extruder design can be varied by removable and interchangeable partial arcuate screw sections which are affixed to the body of the screw in the space between selected threads of a continuous screw thread.