Poe composite film for packaging photovoltaic module and tensioning device for processing poe composite film

The invention discloses a poe composite film for packaging a photovoltaic module and a tensioning device for processing the poe composite film, the composite film is formed by compounding a double-layer poe film and a layer of pet film, the pet film is used as a base film of the composite film, the double-layer poe film is used as a functional film of the composite film, and the two layers of poe films respectively cover the surface of the pet film; wherein the poe film is composed of 90% of poe resin and 10% of a modified additive; the modified additive is formed by mixing an organic peroxide cross-linking agent, a cross-linking auxiliary agent, a silane coupling agent and an anti-ultraviolet agent, and the mixing ratio of the organic peroxide cross-linking agent to the cross-linking auxiliary agent to the silane coupling agent to the anti-ultraviolet agent is 5: 3: 3: 1; the PET film adopts a PET base material film subjected to low-temperature plasma corona treatment and tensioning treatment, the method is