Patent · US Expired

White, biaxially-oriented polyester film with cycloolefin copolymer (COC), which is matt on at least one side, method for production and use thereof

US6893706B2 · kind B2 · utility

7Cited by

14References

16Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Herbert Peiffer · Mainz, DE
Holger Kliesch · Ginsheim-Gustavsburg, DE
Gottfried Hilkert · Saulheim, DE
Bart Janssens · Wiesbaden, DE

Key dates

Filing date	May 3, 2001
Grant date	May 17, 2005
Priority date	—
Expiry date	Sep 18, 2021

Classification

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

Abstract

The invention relates to a white, biaxially-oriented and coextruded polyester film which is matt on at least one side with at least one base layer B, which contains a cycloolefin copolymer (COC) in amounts of 4 to 60 wt. %, based on the weight of the base layer, in addition to polyester starting material. The glass transition temperature Tg of the COC lies in the range from 70 to 270° C. Said film has at least one matt outer layer (A), made from polyester and is particularly suitable for use in fast running machines such as winding, metallising, printing or laminating machines.

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