At K 2007, injection press maker Netstal-Maschinen AG will be plugging its newly designed hybrid, the Evos, slated to replace the SynErgy; and its smallest-tonnage Pet-Line press yet, for PET preforms.
Originally a metal foundry, 150-year-old Netstal brought out its first injection molding machine in 1945.
The NÃ¤fels-based company now offers only all-electrics and hybrids, which combine electric and hydraulic power, and continues to stress its strength - high-speed, high-performance presses in markets such as thin-wall packaging, medical and PET preforms, according to Rick Shaffer, president and general manager of Netstal Machinery Inc. of Devens, Mass.
Evos features a servo-electric screw drive as standard on its complete clamping-force range of 200-500 metric tons. On the hydraulic injection unit, accumulators power injection speeds up to 1,000 millimeters per second, according to the company.
Under the SynErgy line, Netstal offered electric screw drive as standard on larger-sized presses, from 500-800 metric tons, while the screw drive was hydraulic on machines below 500 tonnes.
Netstal has increased tie-bar spacing on the Evos. Also, the mold-closing cylinder is arranged on the inside, saving space.
A modular construction means you can mix and match clamping units with injection units.
All axes of the Evos are digitally closed-loop controlled, even secondary movements such as nozzle contact pressure.
Two Evos injection presses will mold packaging at the K show, to be held Oct. 24-31 in Dusseldorf, Germany.
A 350-tonne Evos will make a polypropylene container with in-mold labeling on a four-by-four stack mold, at a 4.8-second cycle. The machine will be running the MuCell process, to reduce the container's weight.
The 500-tonner will mold a threaded spout on a 144-cavity mold, on a 3.6-second cycle - to churn out more than 144,000 parts per hour.
Turning to PET, Netstal - which has carved out a name for itself with molds of up to 96 cavities on a 350-tonne injection press and a whopping 192 cavities on a 600-tonner - is getting smaller at K, with a 200-tonne Pet-Line.
The 200-tonne model is designed to run molds with up to 24-48 cavities, to target packaging for food and cosmetics, as well as beverages.
Netstal used its Platform 2000 design to reduce costs on the newest Pet-Line, thanks for a simplified removal gripper, a redesigned shooting pot with higher injection pressures and the intrusion system, where the screw keeps turning even as it moves forward to feed the shooting pot.
In other K show news, Netstal plans to mold parts on two of its all-electric Elion presses. An 80-tonne Elion will make medical pipettes; a 175-tonne model, flowerpots.
Meanwhile, a 175-tonne SynErgy will be turning out spikes for golf shoes.