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:
Jun. 22, 2021
Filed:
Jun. 19, 2019
Mitsubishi Polyester Film Gmbh, Wiesbaden, DE;
Herbert Peiffer, Mainz, DE;
Martin Jesberger, Mainz, DE;
Stefan Bartsch, Bodenheim, DE;
Bodo Kuhmann, Runkel, DE;
Viktor Fischer, Oftersheim, DE;
Matthias Konrad, Kriftel, DE;
Mitsubishi Polyester Film GmbH, Wiesbaden, DE;
Abstract
The present invention relates to a transparent, biaxially oriented, thermoformable polyester film including at least 85% by weight of a copolyester whose dicarboxylic acid components derive to an extent of 85 to 94 mol % from terephthalic acid-based units and to an extent of 6 to 15 mol % from isophthalic acid-based units. The inventive films exhibit a surface elasticity modulus in the range from 4500 to 6400 N/mm; a sum total of the strengths (σ) in longitudinal direction and in transverse direction in the range from 170 to 220 MPa; a density of less than 1390 kg/m; a haze of less than 2.0%; a clarity of at least 85%; a gloss of at least 120 and a thickness in the range from 50 to 300 μm. The invention further relates to processes for producing such films, and to the use thereof.