| 摘要 |
The present invention provides an easy-to-tear biaxially-stretched polyester film having easy cut property and adhesiveness, as well as superior properties of polyester film, such as heat resistance, moisture-proof property, transparency, aroma retention and the like. The present invention provides an easy-to-tear biaxially-stretched polyester laminate film comprising at least two layers of a layer substantially free of a molecular orientation and a layer having a molecular orientation, which shows a difference (Nx-Ny) between the refractive index Nx in the longitudinal direction and the refractive index Ny in the width direction of -0.010 to 0.010 and the refractive index Nz in the thickness direction of not less than 1.480, wherein the layer having a molecular orientation has a thickness of 1-8 mum.
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