Patent ID: 6057041
Filing Date: 2000-05-02
Classification: A61K,B32B,C08J,C09J,Y10S,Y10T

Abstract:
A releasing film (C), comprisinga polyester film (A), anda cured silicone resin layer (B) formed on at least one side of a polyester film (A),characterized in that (1) the film (A) is a biaxially oriented film formed of polyethylene-2,6-naphthalenedicarboxylate and has a surface center line average roughness (Ra) of 50 nm or less, (2) the releasing film (C) has a dimensional change rate of 0.2% or less under stress of 150 gf/mm.sup.2 at 120.degree. C. and (3) the releasing film (C) comprises a primer layer (D) having a SiO bond between the film (A) and the cured silicone resin layer (B).