Patent ID: 11878840
Assignee: GPI SYSTEMS AB
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. The method of forming a paperboard packaging container according to claim 1, wherein the body blank in step a) furthermore is provided with two or more parallel crease lines extending along the first transverse edge between respective third and fourth line end points, the respective third line end points each being arranged with a distance of from 2 mm to 15 mm from the first side edge and the respective fourth line end points each being arranged with a distance of from 2 mm to 15 mm from the second side edge; and wherein step d) includes providing a second non-creased area bridging over the sealing strip and extending between the respective third and fourth line end points of the two or more parallel crease lines extending along the first transverse edge with two or more bridging crease lines such that a second bridging crease line area is formed, wherein step h) includes closing the first body opening by pressing a paperboard disc into the first body opening, the paperboard disc having a peripheral flange being flexed towards the first end in the height direction of the paperboard packaging container and sealing the peripheral flange of the paperboard disc to the inner surface of the container wall; the method further including a step of forming a curled first edge by curling the first end of the container body wall inwardly, at the two or more parallel crease lines arranged along the first transverse edge.