MULTILAYER TRANSPARENT POLYESTER FILM, METHOD FOR MANUFACTURING SAID FILM AND USE OF SAID FILM IN PARTICULAR IN THE BACKSHEETS OF PHOTOVOLTAIC PANELS

摘要

A biaxially oriented multilayer transparent film including at least two layers of polyester, respectively a core layer and at least one outer layer, which can be identical or different, wherein: i) at least the core layer includes at least one biaxially oriented transparent polyester PE1, ii) at least one of the outer layers includes, on the one hand, at least one biaxially oriented polyester PE2, and, on the other hand, particles coming from the reaction between at least one metal compound and at least one monomeric or oligomeric unit of PE2, the particles having more preferably a d50—as μm and following an order of preference—between 0.5 and 5; between 1.0 and 4, and between 1.5 and 3.0. Also relates to the manufacture of this film and its applications as a laminate in particular in the backsheets of photovoltaic cells.

主权项

1. Transparent multilayered film, biaxially stretched, comprising at least 2 layers of Polyester, respectively a core layer and at least one outer layer that can be the same or different, wherein:
i) at least the core layer contains at least a transparent biaxially oriented polyester PE1, ii) at least one of the outer layers comprising, firstly, at least a biaxially oriented polyester PE2, and on the other hand, some particles issued from the reaction between at least one metallic compound and at least a monomer or oligomer unit of a precursor PE2″ of PE2.