| 摘要 |
PURPOSE:To provide the film for photographic sensitive materials consisting of a biaxially stretched polyester film having an excellent decurling property. CONSTITUTION:This film for photographic sensitive materials is the laminated and biaxially stretched polyethylene (PE)-2,6,6-naphthalate film having a laminated structure composed of a layer A consisting of the PE-2,6-naphthalate and a layer B consisting of the PE-2,6-naphthalate having the intrinsic viscosity different from the intrinsic viscosity of the layer A. The intrinsic viscosity of the layer A is larger than the intrinsic viscosity of the layer B and the difference therebetween is >=0.02 and tandelta in the longitudinal direction by tensile viscoelasticity at 0.05Hz of the film is <=0.08 at 80 deg.C. |
