A MULTILAYER WHITE POLYESTER FILM, METHOD FOR MANUFACTURING SAID FILM AND USE OF THIS FILM AS PART OF A BACK SHEET FOR PHOTOVOLTAIC CELLS

The aim of the invention is to provide an improved multilayer biaxially oriented white polyester film (adhesion, absence of chalking, opacity whiteness, reflectance, hydrolysis resistance & light stability). The film of the invention comprises three polyester layers, respectively a core layer 4....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BILLARD, KARINE, FALDYSTA, JULIEN, STEVENSON, TIMOTHY, KAWAJI, NAOKI, LACRAMPE, VALERIE, FUJII, HIDEKI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SEMICONDUCTOR DEVICES TRANSPORTING
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Beschreibung
Zusammenfassung:	The aim of the invention is to provide an improved multilayer biaxially oriented white polyester film (adhesion, absence of chalking, opacity whiteness, reflectance, hydrolysis resistance & light stability). The film of the invention comprises three polyester layers, respectively a core layer 4.2and two outer layers 4.1, 4.3 and contains TiO2 particles. In this film: (i) at least one layer includes a Polyethylene Terephthalate PET whose : number average molecular weight is comprised within [18500- 40000]; intrinsic viscosity IV is included within: [>0.70] dL/g; carboxyl group content is