SINGLE SCREW EXTRUDER WITH GROOVED SUPPLY SYSTEM Russian patent published in 2017 - IPC B29C47/62 

FIELD: machine engineering.

SUBSTANCE: single screw extruder with a grooved supply system, a cylinder and a polygonal screw mounted in the cylinder, has a softening zone, a major plasticization zone, and a secondary plasticization zone. In the plasticization main zone area, there are, at least, two rotor paths, respectively, with a wave-like variation in the depth of the screw path and the wave crests offset from each other. And in the inner cylinder wall in the plasticization main zone area, there is provided a groove extending in the longitudinal direction. At the same time, in the plasticization main zone area in the auger flange, a cutout is made before each wave crest, and the resulting cutout height corresponds to the depth of the screw, or the next wave crest respectively.

EFFECT: improving the melting effect while increasing productivity, reducing the melting point and improving the pumping capacity.

6 cl, 3 dwg