Patent · US Expired

Heat-sealable polyester film

US5955181A · kind A · utility

51Cited by

0References

17Claims

0Family size

Assignee

Hoechst Diafoil GmbH · US

Inventors

Herbert Peiffer · Mainz, DE
Cynthia Bennett · Wiesbaden, DE
Werner Roth · Lenningen, DE
Karsten Fritsch · Schwabmünchen, DE

Key dates

Filing date	Dec 10, 1997
Grant date	Sep 21, 1999
Priority date	—
Expiry date	Dec 10, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a coextruded heat-sealable polyester film having at least one base layer and at least one heat-sealable outer layer, wherein this heat-sealable outer layer comprises a copolymer which contains from 5 to 95% by weight of ethylene 2,6-naphthalate units.

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