| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflective biaxially oriented multilayer laminated film showing a sharp developed color, having large color shift, excellent in interlaminar adhesion and hard to tear. SOLUTION: The biaxially oriented multilayer laminated film is constituted by alternately laminating first and second layers so that the total number of layers becomes 11 or above and biaxially stretching the formed laminate. The thicknesses of the first and second layers are 0.05-0.5μm and the first layer is constituted of a polyester composition while the second layer is constituted of a polyester composition different from the polyester composition of the first layer and the refractive index of the second layer is different from that of the first layer. The maximum reflectivity of light in a wavelength range of 350-2,000 nm is higher than the base line of reflectivity, which is obtained from a light reflectivity curve within the wavelength range of 350-2,000 nm, by 20% or above. The half value width of the light reflectivity curve in the maximum reflectivity is 10-100 nm. COPYRIGHT: (C)2005,JPO&NCIPI
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