As they stroll past all the high-tech machinery, NPE 2003 visitors will see one sight they've probably never seen before: a 1944 hand-crank Van Dorn plunger machine actually molding parts.
Beaumont Runner Technologies Inc. (Booth E11224) will demonstrate its MeltFlipper on the Van Dorn Model 1 machine. The press was supplied by Penn State Behrend in Erie, Pa. Beaumont also is based in Erie.
Why the retro approach? Beaumont Runner Technologies wants to show that the MeltFlipper can make any combination of injection press and hot- or cold-runner molds - even one from the early days of plastics - to mold higher-quality parts. The Model 1 machine has a mechanical lever for opening and closing the mold, and a skipper's wheel to build pressure for injection.
Available under license, MeltFlipper is a small steel attachment that rotates or ``flips'' the melt to balance out the amounts of high- and low-viscosity resin that go into each mold cavity. That eliminates imbalances that can happen within a given shot, between different cavities.