Multi-layered plastic foil for packaging

US5281471A · kind A · utility

Assignee

• ViaTech, Inc. · DE

Inventors

• Gunter Diete · Obergünzburg, DE
• Arthur Fischer · Pfalzgrafenweiler, DE
• Nikolaus Remer · Munich, DE

Key dates

• Filing date: Nov 27, 1991
• Grant date: Jan 25, 1994
• Expiry date: Nov 27, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249954
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A foil for use in the vacuum packaging of an article comprises first and second foil layers, the second foil layer being a plastics matrix incorporating a volatile substance such that in use, after evacuation and closing of the package, the volatile substance slowly diffuses into the package, thereby exerting a beneficial influence on the article, for example protection against corrosion.