Patent ID: 6776319
Filing Date: 2004-08-17
Classification: B65H,D02H,D05C

Abstract:
A tension device comprising:an overfeed roll extending laterally to at least a plurality of strands comprising a web, said overfeed roll having an exterior surface and an equator axis extending through a diameter of the overfeed roll defining a top and a bottom half of the overfeed roll, said strands contacting the exterior surface along the bottom half of the overfeed roll at an arc of contact of less than about two hundred seventy degrees; and a feed roll driving the web at a feed rate; said overfeed roll having a speed at its exterior surface greater than the feed rate, wherein strands of the web at or below a desired tension slip relative to the overfeed roll and are fed at the feed rate by the feed roll, and strands having a tension greater than the desired tension are overfed by the overfeed roll to reduce the tension thereon.