| abstract |
PROBLEM TO BE SOLVED: To provide a carrier film for molding such as a resin sheet or a resin film formed from a resin solution, a ceramic sheet formed from a ceramic slurry, etc., having excellent surface smoothness, especially at high temperatures. Alternatively, a release film useful as a protective film for an adhesive layer such as an adhesive tape is provided. A release film comprising a polyalkylene 2,6-naphthalenedicarboxylate containing 0.005 to 5% by weight of inert particles, wherein the release film has a stress of 150 gf / mm 2 . The absolute value of the dimensional change at 120 ° C. is 0.2% or less in each of the longitudinal direction and the vertical direction, the number of particles having a particle size of 50 μm or more in the release film is 100 / m 2 or less, and the surface of the release surface A release film having a roughness (Ra) of 2 to 50 nm. |