Plastic snap closure with anti-tamper strip and method of its manufacture

US5836468A · kind A · utility

Assignee

• Crown Cork · CH

Inventors

• Udo Bosl · Eimeldingen, DE
• Kelvin Pitman · Bubendorf, CH

Key dates

• Filing date: Jun 14, 1996
• Grant date: Nov 17, 1998
• Expiry date: Jun 14, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D2401/20
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

The plastic snap closure possesses a snapping means (3) on the inside surface of the cap wall (2), said snapping means being able to be snapped over a bead on the container mouth. In order to display initial opening of the closure, approximately vertical weakened zones (4) are provided on the lower edge of the closure cap. The cap wall (2) will tear on initial opening of the snap closure in the area of at least one of these weakened zones (4).