Protective film for flexible panel and preparation method of protective film

The invention relates to a protective film for a flexible panel. The protective film comprises a base material layer, a conductive layer, an adhesive layer and a release film layer; the base material layer is provided with a corona surface and a non-corona surface; the non-corona surface of the base material layer is coated with the conductive layer, the corona surface of the base material layer is coated with the adhesive layer, and the adhesive layer is covered with the release film layer; and the adhesive layer is made of acrylic acid system type pressure-sensitive adhesive. According to the protective film disclosed by the embodiment of the invention, the adhesive layer is made of the acrylic acid system type pressure-sensitive adhesive, so that the surface energy of the adhesive layer is relatively low, and the protective film disclosed by the embodiment of the invention can be attached to the flexible panel by adopting a mode of reducing the surface energy of the contact surface of the adhesive layer in