| abstract |
This invention is a release film containing the polyester film (A) and the cured silicone resin layer (B) formed in one or more surfaces of the polyester film (A), The release film (C) characterized by the following It is about:n n n (1) The film (A) is a biaxially oriented film formed of polyethylene-2,6-naphthalenedicarboxylate, the surface centerline average roughness Ra is 50 nm or less,n n n (2) The release film (C) has a dimensional change rate of 0.2% or less under a stress of 150 gf / mm 2 at 120 ° C.n n n The release film may contain a primer layer (D) containing SiO bonds between the film (A) and the cured silicone resin layer (B).n n n In addition, the release film has excellent heat resistance, low dimensional change rate, and good surface properties and gas barrier properties. |