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:
May. 03, 2022
Filed:
Dec. 26, 2016
Toyobo Co., Ltd., Osaka, JP;
Furanix Technologies B.v., Amsterdam, NL;
TOYOBO CO., LTD., Osaka, JP;
Furanix Technologies B.V., Amsterdam, NL;
Abstract
To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and in particular excellent gas barrier property. A layered polyester film containing a polyester film and a thin film layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the thin film layer is formed on at least one surface of the polyester film, the inorganic compound is at least one of aluminum oxide and silicon oxide, and the layered polyester film has a plane orientation coefficient ΔP of not less than 0.100 and not more than 0.200, a film thickness of not thinner than 1 μm and not thicker than 300 μm, and an oxygen permeability of not less than 0.1 mL/m/day/MPa and not more than 80 mL/m/day/MPa under a temperature of 23° C. and a humidity of 65%.