Larger motor doubles pipe output.Running a small polyolefin pipe extruder with a high-speed "hyper A Greek work meaning "above" or "more than." It is used as a prefix to technical concepts and products to convey a more advanced or more automatic capability. drive" doubles output without any extra gear wear, says Cincinnati Extrusion, Erlanger, Ky. These claims are based on trials of prototype Rapidex single-screw extruders in Germany. An extra-long, 60-mm, 37:1 extruder is fitted with a 250-kw, water-cooled Siemens AC motor, which would normally power a 120-mm extruder. That allows screw screw, simple machine consisting essentially of a solid cylinder, usually of metal, around which an inclined plane winds spirally, either clockwise or counterclockwise. speeds up to 450 rpm (vs. the usual 220-rpm limit) with the aid of a special fluted bushing to couple the gear shall and screw. Output is 2200 lb/hr of PE pipe or 1760 lb/hr of PP pipe, more than double the usual rates for a 60-mm extruder. Downstream cooling and handling equipment is sized for a 120-mm extruder. The extruder is modified with a grooved groove n. 1. A long narrow furrow or channel. 2. The spiral track cut into a phonograph record for the stylus to follow. 3. feed section and new screw geometry geometry [Gr.,=earth measuring], branch of mathematics concerned with the properties of and relationships between points, lines, planes, and figures and with generalizations of these concepts. to allow twice the normal feed rate. The Rapidex line was unveiled last August and is being tested in production at Rehau in Viechtach, Germany, and other locations, making 160-mm HDPE HDPE abbr. high-density polyethylene pipe with 5.8-mm wall thickness. Tel: (859) 746-1530 * www.cet-austria.com [ILLUSTRATION OMITTED] |
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