| abstract |
Layer A and layer B are alternately laminated, and a film that reflects due to optical interference based on the difference in refractive index between layer A and layer B, wherein layer A contains trimethylene-2,6-naphthalenedicarboxylate units It consists of aromatic polyester as the main repeating unit, its layer thickness is in the range of 0.05 to 0.5 μm, layer B is of the polylactic acid composition, and its layer thickness is in the range of 0.05 to 0.5 μm. Further, in the reflectance curve for light having a wavelength of 400 to 1600 nm, the oriented laminated film is characterized by having a reflection peak whose maximum reflectance is 20% or more higher than the baseline of reflectance. It is possible to provide a laminated film with improved hue unevenness due to thickness variation or a laminated state due to stretching treatment while exhibiting high reflectance. |