Patent · US Expired

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

US6962740B2 · kind B2 · utility

0Cited by

15References

18Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

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

Key dates

Filing date	Oct 10, 2003
Grant date	Nov 8, 2005
Priority date	—
Expiry date	Nov 11, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31797
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Three-layer, highly oriented polyester films having an A-B-C layer construction, preferably made of polyethylene terephthalate, which, in addition to a base layer B have a smooth surface layer A which contains no external particles and a rough surface layer C which contains external particles such as antiblocking agents or pigments, preferably SiO2, in defined amounts and particle sizes, and the surface layer C is additionally provided with an acrylate-containing layer D feature in particular good producibility and processibility, high gloss of the film surface A and low opacity. The very smooth surface A is suitable in particular for coating with materials, for example SiOx, by means of plasma polymerization of hexamethyldisiloxane by the CVD or PECVD method, which provides the film with a high oxygen barrier and is suitable in particular as packaging for light- and air-sensitive foods or other consumable items.

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