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:
Oct. 27, 2015
Filed:
Apr. 15, 2013
Jaakko Haapanen, Järvenpää, FI;
Henry Virta, Kerava, FI;
Heikki Föhr, Järvenpää, FI;
Valmet Technologies, Inc., Espoo, FI;
Abstract
A method and apparatus for winding fiber webs, particularly paper and board webs, in which partial web rolls (R, R) are wound in a winding device having at least two winding stations (), where partial webs (W, W) are guided to rolls (R, R) via a nip between a winding roll(s) () and the partial web rolls (R, R). The partial webs (W, W) are guided on the surface of the winding roll(s) () before entering the nips creating a wrap angle (A, A) on the winding drum(s) (). The wrap angles (A, A) of the partial webs onto the surface of the winding roll () is at least 120° and the wrap angle ratio, i.e. the relation of the larger wrap angle to the smaller wrap angle, is at least 1 and at most 1.25.