Milacron goes metric with electric press
Cincinnati Milacron Inc. electric presses are going metric. The company also announced results of its engineers' research into fast-color changes for accumulator-head blow molders.
Milacron's Plastics Technologies Group in Batavia, Ohio, will introduce its Powerline 300 all-electric molding machine at Plastics USA, Oct. 6-8 in Chicago.
The company says the press features a new base; injection unit; high-speed, direct-drive cl& personal computer-based controller; and low-inertia, air-cooled drives.
Milacron said the Powerline 300 delivers 10 percent more clamp tonnage — 330 tons — in that smaller size. Milacron's U.S. engineers developed Powerline with their counterparts from the Ferromatik Milacron plant in Malterdingen, Germany.
In large-part blow molding, Milacron claims it can cut color changeover time by 40-60 percent.
Research by Dean Reber, director of engineering and development, and John Hsu, senior process engineer, showed that even small drops in temperature at joints or hard-to-heat areas on the accumulator head and manifold allow the melt to slow down and form pockets of hung-up material.
They recommend running a slightly cooler melt stream of purge material through a manifold and head that are heated to the high end of a given resin's allowable temperature. The cooler melt pushes out the trapped material at a faster pace.
Tel. (888) 645-2276, fax (800) 282-8082.
Paulson's SimTech simulates molding
Paulson Training Programs Inc.'s new SimTech CD-ROM simulates injection molding, allowing the operator to change molding conditions and machine settings, then see how that affects the part.
``[SimTech] is designed for people who could run a machine. It's not for a novice,'' said Donald Paulson, president of the Chester, Conn., company. ``You do have to understand molding.''
The user picks from six molded parts and five materials, then sets the machine controls. When you click on cycle, an animated injection press molds the part, which is displayed in three dimensions. SimTech shows any defects, and gives hints on how to correct the problem.
Paulson has developed mathematical equations to combine all the settings, take into account changes, and determine how the part would turn out.
Control-panel settings include barrel temperatures for three zones, back pressure, injection time, mold close and open times, clamping force, shot size and screw revolutions per minute. Problems SimTech can display include burn and sink marks, voids, dimensional variations, short shots, flash, degradation of the plastic and part distortion.
After each cycle, a bar chart quickly shows increases or decreases in the severity of defects. Once users get defect-free parts, SimTech lets them work to reduce the cycle time.
SimTech costs $9,995. Paulson has a demonstration CD available.
Tel. (860) 526-3099, fax (860) 526-3454, e-mail [email protected] ing.com.
Macchi launches line for 3-layer blown film
Italy's Macchi Srl has delivered a three-layer coextrusion line for making blown film to a New Zealand customer, AEP-Filmpac of Auckland.
The customer wanted a flexible, automatic machine that could run a range of resins in many combinations. The machines have melt gear pumps manufactured by LCI International. Macchi said it advocates using gear pumps in blown film lines because they isolate the pressure between the extruder and die.
The AEP-Filmpac line is equipped with two 65-millimeter extruders for the outer layers and an 80mm extruder for the core.
A Windows NT-based controller runs Macchi's line. The firm is based in Venegono, Italy.
Tel. +39 (331) 827717, fax +39 (331) 827750.
New Metro-VL loader uses compressed air
New Motan Inc. of Plainwell, Mich., has developed the Metro-VL compressed-air hopper loader, which uses compressed air to move as much as 500 pounds of material an hour.
An adjustable proximity switch keeps materials at the proper level.
Motan is offering three Metro models—VL-1 for single-material loading, VL-2 for dual-material proportioning and the VL-G for loading from a granulator.
Tel. (616) 685-1050, fax (616) 685-1059.