| abstract |
(57) [Problem] To provide a release film having excellent release properties, cushioning properties, and antistatic properties. A release film having a release layer on at least one surface of a polyester film containing fine bubbles, wherein the release film satisfies the following formulas (1) to (4) simultaneously. 0.40 ≦ D ≦ 1.30 (1) 5 ≦ F ≦ 1500 (2) R ≦ 10 13 (3) 0.3 ≦ OD (4) (In the above formula, D is Apparent density of release film (g / c m 3 ), F is the peeling force of the release film (gf / 50 mm) Width), R is the surface specific resistance (Ω) of any one surface of the release film, and OD represents the degree of concealment of the release film. |