Battenfeld Cincinnati of Vienna, Austria, showed its new Multi-Touch roll stack at K 2013.
In contrast to conventional three-roll stacks, the Multi-Touch operates with a larger number of roll nips, achieving reliable cooling on both sides of the film. The new roll stack is equipped with either three, five or seven rolls for final calibration.
The first rolls come with a larger diameter to minimize deflection. The rolls which follow are smaller, to ensure the production of film with low tension and perfect flatness.
According to Battenfeld Cincinnati, the film has hardly any orientation and very even thickness profile, because it continuously contacts the roll.
The company says the Multi-Touch also cuts energy consumption by 25 percent compared to a conventional extruder with the same output, because it uses a high-speed single-screw extruder. All extruders in this series come with a 75-mm screw diameter and are now available with drive units in four different sizes.
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