| 摘要 |
<p>Provided is an oriented laminated film, characterized in that the film is obtained by alternately laminating Layer A and Layer B such that reflection is generated by optical interference due to a difference in refractive indices of Layer A and Layer B, wherein Layer A comprises an aromatic polyester containing trimethylene-2,6-naphthalenedicarboxylate as a main repeating unit and has a layer thickness in a range of 0.05 to 0.5 µm and Layer B comprises a polylactic acid composition and has a layer thickness in a range of 0.05 to 0.5 µm, and a reflectivity curve thereof for light in a wavelength range of 400 to 1,600 nm has a reflection peak having a maximum reflectivity which is at least 20% higher than the reflectivity baseline. The present invention can provide a laminated film having high reflectivity with improved thickness variation associated with stretching treatment and improved hue irregularity attributable to a state of lamination.</p> |
