MULTI-LAYERED FILM AND METHOD FOR PREPARING THE SAME

摘要

An embodiment of the present invention relates to a multi-layered film which includes a fluoropolymer layer including 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as an anti-yellowing agent. The multi-layered film can prevent yellowing generated by commercial polymers and the like diffused from other additives added to the fluoropolymer layer, for example, the primer layer of a lower part even if the film is exposed under a high temperature and high humidity environment for a long period of time. Therefore, the multi-layered film is usefully used for a back sheet for photoelectric cells and the like and can provide a photocell module having improved weather-resistance regardless of exposure to external environments for a long period of time.