Package comprising a stiff strip

US3979048A · kind A · utility

Assignee

• AB Ziristor

Inventors

• Olof Stark · Ystad, SE
• Rolf M. Dilot · Lund, SE

Key dates

• Filing date: Dec 4, 1974
• Grant date: Sep 7, 1976
• Expiry date: Dec 4, 1994

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D3/28
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A package having, for example, a parallelepipedic configuration is formed from a tube of laminated packaging material which is obtained by folding a web of the material so that opposite edge portions of the web overlap and form a longitudinally extending joint. The laminated packaging material consists of a base layer of paper or cardboard and facing layers of thermoplastic material, and the cut edge of the material which rests against the inside of the package is prevented from coming into contact with the contents of the package by application of a protective strip thereto along the joint zone, this strip being a laminate consisting of a base layer coated on both sides with a thermoplastic material which is sealed to the inside thermoplastic layer of the package. The base layer of the protective strip has a higher softening temperature than that of the inside thermoplastic layer of the packaging material.