Apparatus for unwinding rolls of web material

Details Apparatus for unwinding rolls of web material Apparatus for unwinding rolls of web material

2006-04-18

2006-04-18

Rivera, William A. (Department: 3654)

Winding, tensioning, or guiding

Tension control or brake

Supply controlled

C242S563000, C242S615210

Reexamination Certificate

active

07028940

ABSTRACT:
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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