Krupp Werner & Pfleiderer Gmbh

Coperion Gmbh

Ulrich Burkhardt

Gerhard Weihrich

Erwin Haring

Rainer Munz

Rainer Herter

Peter Heidemeyer

A treatment element to treat material in a multi-shaft worm machine has an outer contour with at least one outer contour portion, the associated evolute of which is a quantity of at least three points, each of the points lying outside the longitudinal axis and within the outer radius of the treatment element and two respective adjacent points having a spacing from one another, which is less than half the core radius. The treatment element ensures high flexibility during the adjustment of shear and/or extensional flows on the material to be treated.

Treatment element for treating material in a multi-shaft worm machine and multi-shaft worm machine

A twin screw extruder has a casing with a working direction, two partially intersecting casing bores, which are parallel to each other, two shafts, which are disposed in the casing bores and which are drivable to rotate in the same direction of rotation about an axis of rotation, the axes of rotation having a distance A from each other, and single-flight kneading disks, which are fixed on the shafts and have surface lines extending parallel to the respective axis of rotation. The kneading disks, in a cross-section perpendicular to the axis of rotation, have a crest, which is formed as a segment of a circle about the respective axis of rotation and which has a crest angle b and a radius R,, a bottom, which is formed as a segment of a circle about the respective axis of rotation and has a bottom angle g and a radius R,and two flanks, which join the crest and the bottom, R,>R,, A&ap;R,&plus;R,and 0&deg;&lE;b&lE;45&deg; applying.

Twin screw extruder with single-flight kneading disks

A multi-shaft screw-type extruder having a casing with two parallel intersecting casing bores and two shafts drivably disposed in the casing bores. Screw elements intermeshing kneading disks are fixed on the shafts The widths of the respective crest portions of the kneading disks are smaller than the disk width and form mixing-and-scraping-studs on the periphery of the disks. The mixing-and-scraping-studs on each kneading disk are axially misaligned relative to each other such that their peripheral faying surfaces jointly cover the entire disk width.

Multi-shaft screw-type extruder, in particular twin-shaft extruder

Method of carrying out continuous preparation processes on tightly

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Stuttgart, Germany

Ulrich Burkhardt