Biaxially oriented polyester film and production method thereof

Details Biaxially oriented polyester film and production method thereof Biaxially oriented polyester film and production method thereof

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) B29C 55/12 (2006.01) B41M 5/41 (2006.01) B41N 1/24 (2006.01) C08L 67/02 (2006.01) C08L 79/08 (2006.01) G11B 5/70 (2006.01) G11B 5/73 (2006.01) H01G 4/018 (2006.01)

Patent

CA 2282171

Disclosed is a biaxially oriented film made of (A) a polyester mainly composed of ethylene terephthalate and (B) a polyether imide and having a single glass transition temperature, a refractive index of 1.60 to 1.80 at least in either a machine direction or a transverse direction. The biaxially oriented film is excellent in thermal dimensional stability, clarity and productivity, and is suitable for use in magnetic recording tape, magnetic recording card, printing plate, ribbon, capacitor, heat-sensitive mimeograph stencil or the like.

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