| abstract |
The present invention relates to a multilayer film, a back sheet for a photovoltaic module, a manufacturing method thereof, and a photovoltaic module. The multilayered film of the present invention can be obtained by forming a resin layer containing a fluorinated polymer and an oxazoline group-containing polymer on a substrate so that the resin layer containing the fluorinated polymer has excellent durability and weatherability and exhibits high interfacial adhesion with the substrate . Further, in the present invention, the drying process can be performed at a relatively low temperature in the process of manufacturing the multilayered film, thereby reducing the manufacturing cost, increasing the productivity, and preventing deterioration of the product due to thermal deformation or thermal shock. Such a multilayer film of the present invention can be effectively used, for example, as a backsheet in various types of photovoltaic modules. |