Patent · US Expired

Multilayer, transparent, sealable, biaxially oriented polyester film, its use and process for its production

US6855395B2 · kind B2 · utility

5Cited by

11References

9Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Bart Janssens · Wiesbaden, DE
Herbert Peiffer · Mainz, DE
Gottfried Hilkert · Saulheim, DE

Key dates

Filing date	Jul 1, 2003
Grant date	Feb 15, 2005
Priority date	—
Expiry date	Sep 5, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a biaxially oriented, sealable polyester film with at least one base layer (B), with a sealable outer layer (A) and with another, 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.