The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2003
Filed:
Aug. 10, 2001
Herbert Peiffer, Mainz, DE;
Wolfgang Lohwasser, Gailingen, DE;
Richard Lee Davis, Wiesbaden, DE;
Olaf Frei, Siblingen, CH;
Other;
Abstract
The invention relates to a film composite for packaging purposes. Said film composite efficiently blocks the passage of water vapor and gas after sterilization in a water bath or in water vapor at temperatures of more than 90° C., and comprises a film consisting of polyethylene terephthalate (PET) with a coextruded layer consisting of polyethylene-2,6-naphthalate (PEN) on at least one side. The film has a 10 nm to 200 nm thick ceramic layer on at least one of the sides that are coated with PEN, said layer being produced by vaporizing aluminium while supplying oxygen or by vaporizing silicon monoxide (SiO), optionally while supplying oxygen, in a vacuum. The layer consists of Al O or SiO , x being a number between 0.9 and 2. The composite film blocks the passage of water vapor and gases to a large extent after sterilization in a water bath or in water vapor at temperatures of more than 90° C.