Patent ID: 11884441
Assignee: TETRA LAVAL HOLDINGS & FINANCE S.A.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. Method for producing sealed packages of a pourable product from a web of packaging material;
the method comprising:
advancing the web of packaging material along a web advancement path at least to a tube forming station;
forming the web of packaging material into a tube at the tube forming station;
advancing the tube along a tube advancement path;
controlling the tension of the tube by a tensioning device;

wherein the tensioning device is arranged upstream of the tube forming station along the web advancement path and has at least a main drive roller rotatable around a main rotation axis;
wherein during the controlling of the tension, the main drive roller rotates around the main rotation axis and an angular speed and/or an angular acceleration of the main drive roller is cyclically varied;
wherein the angular speed and/or the angular acceleration of the main drive roller is varied according to respectively a pre-defined and/or pre-determined speed profile and/or acceleration profile.