KraussMaffei Berstorff showed two of its extruders with markedly different applications at NPE2009.
New to the U.S. market is a 32D twin-screw extruder for PVC pipe that also is adaptable to PVC profiles. The 32D machine in North America contains bimetallic barrels and screws and a modular horsepower motor. Outputs of the 32D extruder go as high as 3,400 pounds per hour, said Artie Riegger, regional sales manager for the extrusion division. North American customers have asked for bimetallic parts because they run higher calcium carbonate levels than in Europe, Riegger said in an interview at his firm's booth.
We offer complete systems for PVC foam, fencing, decking and sheet, Riegger said.
KraussMaffei Berstorff also displayed a single-screw compounding extruder with an in-line color analyzer. It is designed to make polyethylene pipe up to 1,600 millimeters in diameter.
The color analyzer could replace old-fashioned ways of drawing samples from the pellets, said Martin Mack, vice president of research and development for the extrusion division of the Florence, Ky., company.
It detects process upsets at the melt, Mack noted.
Color adjustments are made at the feeder stage after detecting variations in real time. Work on the system started at the last NPE and since then some installations have been sold in North America and more are in trials.
KraussMaffei Berstorff is a division of Florence-based KraussMaffei Corp.