높은 근적외 차폐 성능과 우수한 합판 유리 가공성을 양립한 2 축 연신 적층 폴리에스테르 필름 및 그것으로 이루어지는 합판 유리를 제공한다. 즉, 제 1 층 및 제 2 층이 교대로 적층된 합계 51 층 이상의 2 축 연신 적층 폴리에스테르 필름으로서, 제 1 층을 구성하는 폴리에스테르 (A) 가 폴리에틸렌-2,6-나프탈렌디카르복실레이트이며, 제 2 층을 구성하는 폴리에스테르 (B) 가 에틸렌테레프탈레이트 성분 혹은 에틸렌나프탈렌디카르복실레이트 성분 중 적어도 1 개를 함유하는 폴리에스테르이며, 파장 400 - 750 nm 의 범위 내에서의 평균 반사율이 25 % 이하, 또한 파장 800 - 1200 nm 의 범위 내에서의 평균 반사율이 50 % 이상이며, 90 ℃ 에 있어서의 필름의 영률이 필름 종방향과 횡방향 중 적어도 일방 향에 있어서 2400 MPa 이상인 2 축 연신 적층 폴리에스테르 필름에 의해 달성된다.

    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.


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    Titel :

    2 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


    Weitere Titelangaben:

    2 축 연신 적층 폴리에스테르 필름, 그것으로 이루어지는 합판 유리용 적외선 차폐 구성체 및 그들로 이루어지는 합판 유리


    Erscheinungsdatum :

    2019-05-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    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





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