| abstract |
(57) [Problem] To be used in various applications such as protection of liquid crystal display panels such as polarizing plates and retardation plates, and release of ceramics. A release film having good transparency is provided. A release film having a release layer having a residual adhesion rate of at least 80% on at least one surface of a polyethylene-2,6-naphthalate film, wherein the release formula satisfies the following formulas at the same time. the film. ΔH ≦ 2.5... L ≧ 70 (ΔH is a difference (%) between the turbidity of the release film after heat treatment and the turbidity of the release film before heat treatment. , L represents the light transmittance (%) of the release film) |