Method in the forming of packaging containers

US6048295A · kind A · utility

Assignee

• Tetra Laval Holdings & Finance S.A. · CH

Inventor

• Jan Olsen · Malsch, DE

Key dates

• Filing date: Jun 30, 1998
• Grant date: Apr 11, 2000
• Expiry date: Jun 30, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B31B50/78
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

The disclosure relates to a method in the forming of packaging containers (1) which have sealing fins in which the packaging material is sealed inside-to-inside, and also projecting, double-walled corner flaps (8). In order to form a parallelepipedic packaging container, the corner flaps are folded down and sealed to the outside of the packaging container, which subjects a sealing fin running between the corner flaps to stresses which may entail untightness in the packaging container. This is avoided in that the sealing fin, prior to the downward folding operation, is deformed in that at least a portion of the fin (4) is laterally displaced in relation to adjacent portions of the fin.