Provided are a biaxially stretched laminated polyester film having both a high near-infrared shielding performance and excellent processability into a laminated glass; and a laminated glass composed of the same. Specifically, the invention is achieved by a biaxially stretched laminated polyester film including 51 layers or more in total, in which a first layer and a second layer are alternately laminated, wherein a polyester (A) constituting the first layer is polyethylene-2,6-naphthalenedicarboxylate; a polyester (B) constituting the second layer is a polyester containing at least one of an ethylene terephthalate component and an ethylene naphthalene dicarboxylate component; an average reflectance within a wavelength range of 400 to 750 nm is not more than 25%; an average reflectance within a wavelength range of 800 to 1,200 nm is 50% or more; and a Young's modulus of the film at 90°C is 2,400 MPa or more in at least one direction of the longitudinal direction and the lateral direction of the film.
BIAXIALLY STRETCHED LAMINATED POLYESTER FILM, INFRARED-RAY-SHIELDING STRUCTURE FOR LAMINATED GLASS WHICH COMPRISES SAID FILM, AND LAMINATED GLASS COMPRISING SAID FILM OR SAID STRUCTURE
BIAXIAL GESTRECKTE LAMINIERTE POLYESTERFOLIE, INFRAROTSTRAHLUNGS-ABSCHIRMSTRUKTUR FÜR LAMINIERTES GLAS MIT DIESER FOLIE UND LAMINIERTES GLAS MIT DIESER FOLIE ODER DIESER STRUKTUR
FILM EN POLYESTER FEUILLETÉ ÉTIRÉ BIAXIALEMENT, STRUCTURE DE PROTECTION CONTRE LES RAYONS INFRAROUGES POUR VERRE FEUILLETÉ COMPORTANT LEDIT FILM ET VERRE FEUILLETÉ COMPORTANT LEDIT FILM OU LADITE STRUCTURE
2018-08-08
Patent
Electronic Resource
English
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
European Patent Office | 2019
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