MULTILAYER FILM, AND PHOTOVOLTAIC MODULE INCLUDING SAME

摘要

The present invention relates to a multilayer film, a backing sheet for a photovoltaic module, a method for manufacturing the same, and the photovoltaic module. The multilayer film of the present invention is configured such that a primer layer which includes a polymer containing an oxazoline group is formed on a base, and a resin layer which includes a fluorine-based polymer is formed on the primer layer, thus enabling the multilayer film to have superior reliability and adhesion for heat resistance/moisture resistance conditions and also to have excellent weather resistance and durability. In addition, the primer layer and resin layer of the multiplayer film according to the present invention use a solvent having a low boiling point and are thus able to be manufactured at a low cost at a low drying temperature, thus saving on manufacturing costs, and preventing degradation in the quality of a product caused by thermal deformations or thermal shocks. Such a multilayer film may be effectively used, for example, as a backing sheet for a photovoltaic module, thus providing a photovoltaic module which can maintain excellent durability although the photovoltaic module is exposed to an external environment over a long period of time.