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:
Jan. 30, 2024
Filed:
Apr. 10, 2020
Tetra Laval Holdings & Finance S.a., Pully, CH;
Marco Melandri, Bologna, IT;
Paolo Bergami, Formigine, IT;
Gianluca Pagliani, Modena, IT;
Lorenzo Martini, Modena, IT;
Stefano Costa, Casalmaggiore, IT;
Roberto Panciroli, Reggio Emilia, IT;
Claudio Ferrari, Fiorano Modenese, IT;
TETRA LAVAL HOLDINGS & FINANCE S.A., Pully, CH;
Abstract
A packaging machine comprises a conveying device for advancing a web along a web advancement path at least to a tube forming station where the web is formed into a tube and for advancing the tube along a tube advancement path, a tube forming and sealing device configured to form and to longitudinally seal the tube, a tensioning device upstream of the tube forming station and configured to control the tension of the tube and a control unit configured to control packaging machine operation. The tensioning device comprises a main drive roller rotatable around a main rotation axis and a main drive motor configured to actuate rotation of the main drive roller around the main rotation axis. The control unit is configured to control the main drive motor such that angular speed and/or angular acceleration of the main drive roller is cyclically varied to control the tension of the tube.