Multilayer, metalized or ceramic-coated, sealable, biaxially oriented polyester film, its use, and process for its production

US6797359B2 · kind B2 · utility

Assignee

• Mitsubishi Polyester Film GmbH · US

Inventors

• Bart Janssens · Wiesbaden, DE
• Herbert Peiffer · Mainz, DE
• Stefan Bartsch · Wiesbaden, DE

Key dates

• Filing date: Jul 1, 2003
• Grant date: Sep 28, 2004
• Expiry date: Jul 1, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a metalized or ceramic-coated, biaxially oriented, sealable polyester film with at least one base layer (B), with a sealable outer layer (A), and with a further non-sealable outer layer (C). The sealable outer layer (A) has a minimum sealing temperature (fin) of not more than 110° C. and a seal seam strength (fin) of at least 1.3 N/15 mm of film width. The two outer layers (A) and (C) are characterized by particular features. The film of the invention is particularly suitable for use in flexible packaging, and particularly and specifically for use on systems which operate in a vacuum.