Lid for closing a cup

US8652644B2 · kind B2 · utility

Assignee

• Constantia Teich GmbH

Inventors

• Martin Kornfeld · Klosterneuburg, AT
• Lambert Nekula · Pöchlarn, AT
• Alfred Wegenberger · Langenlois, AT
• Adolf Schedl · Lilienfeld, AT
• Franz Reiterer · Getzersdorf, AT

Key dates

• Filing date: Jun 26, 2009
• Grant date: Feb 18, 2014
• Expiry date: Mar 23, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31909
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A lid (2) for closing a cup (1) along a peripheral sealing edge (10) and a method for producing such a lid. The lid includes at least one aluminum film and an optionally multi-layered plastic layer which is co-extruded onto the aluminum film and has a closed predetermined tearing line (3). The plastic layer is made of plastic based on polyethylene (PE) or plastic based on polypropylene (PP), and the predetermined tearing line is introduced into the plastic layer preferably by means of a CO2 laser. The predetermined tearing line (3) may be provided directly in the region of the sealing edge (10).