First North American extruder with gearless torque motor.

Davis-Standard LLC in Pawcatuck, Conn., will show its new gearless EMDD (electric-motor; direct-drive) extruder with a synchronous torque motor for the first time at NPE. It's believed to be the first use of these quiet, energy-efficient, low-maintenance motors on an extruder designed and built in North America. On exhibit will be a 75-mm extruder with a Siemens motor providing 7000 Nm of torque. After the show, the extruder will be used on a blown film line for customer trials at Davis-Standard's Somerville, N.J., lab. A 90-mm prototype appeared at the K 2004 show in Dusseldorf. EMDD extruders are now available in six models from 1.5- to 4-in. diam. with up to 7000 Nm torque.

Davis-Standard will show a second new extruder line at NPE, which is notable for its compactness and low cost. Its HyPE (high-performance extruder) models are 30% more compact than previous Blue Ribbon models because HyPE uses a close-coupled gearbox and AC motor to replace a more complex worm gear and belt-drive assembly. HyPE models have either fixed horizontal or adjustable (co-extruder) configurations in five sizes from 0.75 to 1.75 in. Built with standard components, they're less expensive and available for delivery in under two weeks, Tel: [phone] * PT Direct: 189AP

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