Plastics News senior reporter Bill Bregar picked up these news items at the Fakuma 2005 trade show, held Oct. 18-22 in Friedrichshafen, Germany.
Sigma Engineering updates 3D software
Sigma Engineering GmbH, an Aachen, Germany-based supplier of three-dimensional simulation software for injection molding, released version 4.4 of its 3D-Sigma product.
3D-Sigma allows users to import solid geometric models of a part and mold and mesh them into a fully 3-D model. The software also analyzes the temperature of the mold cavities.
The company completely reworked the graphic interface for defining the process setup for multicomponent molding - a challenge that requires simulating filling, cooling/packing and shrinkage/warping of the first material, then again for the second material. Because the first material heats up again during the second shot, 3D Sigma performs a coupled shrinkage/warping simulation that takes the second heating into account.
Another highlight is the simulation coupling between crystallization and shrinkage/warping for semi-crystalline materials.
Sigma Engineering is sold in the United States by Kruse Analysis Inc. of Naples, Fla.
Gefran SpA revamps melt-pressure units
Gefran SpA has redesigned its melt-pressure transmitters, making them easier to use.
The new design includes:
* Zero pressure output adjustment using a magnetic pen. Users don't have to access an internal trip-pot, so the transmitter housing is permanently closed.
* An optional ``auto-compensation'' version compensates for changes in the process temperature at the sensing tip.
* An optional remote zeroing function allows users to zero-out the transmitter from the panel.
* A standard diaphragm coating, called GTP, provides extra protection in the hostile environment found in extrusion.
The smaller melt-pressure transmitters also work at higher temperatures, up to 221° F.
Gefran SpA is in Provaglio d'lseo, Italy. Its U.S. operation, Gefran ISI Inc. in Winchester, Va., will introduce the new design to U.S. customers at NPE 2006.
* Netstal-Maschinen AG of NÃ¤fels, Switzerland, said it has sold more than 50 of its Elion all-electric presses since they were launched at K 2004.