Bruckner Maschinenbau GmbH of Siegsdorf, Germany, worked with Manuli Film SpA, an Italian maker of biaxially oriented polypropylene film, to develop a high-speed winding technology.
Bruckner upgraded Manuli Film´s 33-foot BOPP film line, which the company claims is the world´s largest and fastest, by replacing the original mechanical/ pneumatic/hydraulic contact roll-positioning system with a linear motor-winding system, called Liwind.
The linear motor controls the motion and contact pressure of the contact roll, moving the roll to the desired position.
Benefits include a wide operating window and less wear and tear because of a big reduction in mechanical parts.
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