The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2004
Filed:
Apr. 23, 2002
Dieter Mathieu, Ottweiler, DE;
Wolfgang Rasp, Prien Chiemsee, DE;
Trespaphan GmbH, Neunkirchen, DE;
Abstract
The present invention relates to a method for guiding a flat web of material ( ) in which the web of material ( ) runs in an arrangement of rotating rollers at a web speed v . The web of material is guided in its peripheral region via a spreader roll ( ) which produces a tensile stress in the transverse direction, i.e. crosswise relative to the machine direction of the web of material ( ), wherein this tension in the transverse direction is controlled by means of closed-loop control of the circumferential speed v of the spreader roll ( ) and/or by open-loop control of the cant angle &agr; and/or of the wrap angle &bgr; between the surface of the spreader roll ( ) and the web of material ( ) and wherein the circumferential speed v is greater than the web speed v .