Packaging container with a pouring spout

US4248351A · kind A · utility

Assignee

• Tetra Pak International AB · SE

Inventor

• Nils Berg · Karlsruhe, DE

Key dates

• Filing date: Jun 20, 1978
• Grant date: Feb 3, 1981
• Expiry date: Jun 20, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D5/065
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A packing container with an unfoldable pouring spout which has an inherent tendency to assume an unfolded position when the container has been opened is disclosed. The ability of the pouring spout to tend to assume the unfolded position is achieved by having certain folding lines of the container weaken the material of the container to an appreciably greater extend than certain other folding lines of the container. The relative difference in weakening of the material caused by the folding lines utilizes the elasticity of the packing material to urge the pouring spout to unfold.