| 摘要 |
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 is provided. The polyester laminate film may include at least two layers, 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. The layer having a molecular orientation has a thickness of 1-8μm.
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