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:
Jan. 13, 2004
Filed:
Aug. 24, 2001
Applicant:
Inventors:
Harald Mueller, Taunusstein, DE;
Ursula Murschall, Nierstein, DE;
Assignee:
Mitsubishi Polyester Film GmbH, Wiesbaden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/708 ; B32B 2/736 ; B32B 3/116 ; B32B 3/130 ;
U.S. Cl.
CPC ...
B32B 2/708 ; B32B 2/736 ; B32B 3/116 ; B32B 3/130 ;
Abstract
The invention relates to a multi-layered biaxially-oriented film, mainly made of a crystallizeable thermoplastic polyester and economically produceable with a high surface quality, i.e. without pinning bubbles and without electric arcing and film breaks, at production speeds of 340 m/min or higher. According to the invention the multi-layered polyester film has an average specific electrical melt resistance over its total thickness which lies within a range from 1.5×10 to 30×10 &OHgr;×cm. The invention also relates to a method of production of the film.