Controlled vertical axis unwinding method for rolls of web...

Details Controlled vertical axis unwinding method for rolls of web... Controlled vertical axis unwinding method for rolls of web...

B - Operations, Transporting

65

H

B65H 19/18 (2006.01) B65H 23/04 (2006.01) B65H 23/182 (2006.01) B65H 39/16 (2006.01)

Patent

CA 2671377

A method and apparatus for unwinding a vertically oriented roll of web material is disclosed. The roll comprises a lower surface, an upper surface and a circumferential surface. The apparatus comprises: at least one drive element adapted to rotate the vertically oriented roll, a sensor adapted to measure a tension of the web, and a controller adapted to adjust a speed of the web according to the tension of the web. The method comprises steps of rotating the roll, determining a desired web tension, and adjusting the speed of the roll according to the desired web tension.

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