Patent ID: 6704978
Filing Date: 2004-03-16
Classification: B65H

Abstract:
A method for guiding a flat web of material (1) in which the web of material (1) runs in a machine direction in an arrangement of rotating rollers at a web speed vF, comprising the step of:guiding the web of material (1) in its peripheral region with a spreader roll (2) which produces a tensile stress in a transverse direction which is crosswise relative to the machine direction of the web of material (1), wherein this tensile stress in the transverse direction is controlled by at least one of a closed-loop control of a circumferential speed vR of the spreader roll (2), an open-loop control of a cant angle &agr; of the spreader roll (2) relative to the machine direction, and an open-loop control of a wrap angle &bgr; of the web of material (1) on the spreader roll (2), and wherein the circumferential speed vR is greater than the web speed vF.