Battenfeld Extrusionstechnik GmbH of Bad Oeynhausen, Germany, said its new high-speed BEX 1-75-34 single-screw extruder can turn out 4,400 pounds of high-impact polystyrene or about 3,300 pounds an hour of poly-propylene.
At a demonstration for 70 customers, the company ran a cast film coextrusion line and downstream equipment. The line was later shipped to an unidentified maker of thermoformed packaging.
The screw diameter is 75 millimeters, and the processing length originates from the feeling of designers that machine performance depends on screw speed instead of the size of the machine. That means the BEX line takes up less space, and is easier to maintain and repair, than a traditional machine with the same output. Other benefits include quicker changeover times and up to 25 percent reduction in energy consumption.
In other news, the company introduced the Calandrette, positioned as an alternative to a conventional calender for making small or midsize batches of PVC film.
The line includes a two-step extruder concept — a planetary-gear extruder and a discharge unit with a die, a polishing stack, haul-off and chill rolls, a thickness gauge, electrical installations and a controller. The Calandrette is a three-roll polishing stack.
Battenfeld Extrusionstechnik sold one of the redesigned Calandrette lines to a company that makes PVC film for the pharmaceutical market.
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