The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Herbert Peiffer, Mainz, DE;
Guenther Crass, Taunusstein-Wehen, DE;
Richard Lee Davis, Wiesbaden, DE;
Assignee:
Hoechst Diafoil GmbH, Wiesbaden, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 5/16 ; B32B 5/22 ; B32B 2/704 ; B32B 2/736 ; B32B 3/130 ;
U.S. Cl.
CPC ...
B32B 5/16 ; B32B 5/22 ; B32B 2/704 ; B32B 2/736 ; B32B 3/130 ;
Abstract
The invention relates to a biaxially oriented polyester film which has at least three layers and has better optical properties than films of the prior art together with very good processing performance, and, after it is metalized or coated with oxidic materials, is a good barrier to oxygen, and which is built up on each side from at least one base layer B and outer layers A and C applied to this base layer, where these outer layers have a defined number of elevations of a defined height and diameter. The invention further relates to the use of the film and to a process for the production thereof.