Tension-controlled web processing machine and method

Details Tension-controlled web processing machine and method Tension-controlled web processing machine and method

B - Operations, Transporting

65

H

B65H 23/038 (2006.01) B65H 23/18 (2006.01)

Patent

CA 2516956

A web processing assembly including first, second and third fixed spaced apart pairs of nip rollers moving the web respectively at a first, second and third speeds, the first and third speeds being constant and similar, the second speed being variable with a mean speed similar to the first and third speeds, a first idler roller engaging the web between the first and second pair of rollers and a second idler roller engaging the web between the second and third pair of rollers, each idler roller maintaining the web in constant tension by moving along a restrained path perpendicular to its axis to compensate for a difference between the variable second speed and the respective one of the constant first and third speeds. A method for processing a web and system for conveying a web are also disclosed.

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