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.
Type:
Grant
Filed:
November 27, 1991
Date of Patent:
January 25, 1994
Assignee:
Viatech Holding GmbH
Inventors:
Gunter Diete, Arthur Fischer, Nikolaus Remer