Patent · US Expired

Biaxially oriented polyester film comprising a cycloolefin copolymer, its use and process for its production

US6326431A · kind A · utility

16Cited by

0References

16Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

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

Key dates

Filing date	Feb 27, 2001
Grant date	Dec 4, 2001
Priority date	—
Expiry date	Feb 27, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24942
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a milkily translucent, biaxially oriented polyester film with at least a base layer which comprises up to 5% by weight of a cycloolefin copolymer (COC), based on the weight of the base layer, the glass transition temperature of the COC being within the range from 70 to 270.degree. C. The film of the invention is suitable for packing foods or other consumable items which are sensitive to light and/or to air, or for use in industry, e.g. for producing hot-stamping foils or as a label film, or for image-recording papers, printed sheets, or magnetic recording cards, or for metallization.

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