Photovoltaic PV film as a part of one of the materials for solar panels encapsulations, the main role is to adhesive solar cells, solar temper glass and solar backsheet together. According to the actual application requirements of solar PV modules, in the premise of ensuring the transmission performance of the module can isolate the external water vapor, extend the life of the solar module, protect the battery, and package it into a solar module that can output direct current. Photovoltaic PV film in general should have high transparency, high adhesion, good weather resistance and easy storage, good sound insulation effect, low melting point, easy flow and other excellent performance characteristics.