Laminated film and molded article, and production methods therefor

A method for manufacturing a laminated film, the method comprising:

• a step of forming an uncured hard coat layer by applying an active energy ray-curable composition for forming a hard coat layer to one surface of a transparent support substrate having a thickness of 50 μm or more and 600 μm or less;
• a step of forming an uncured optical interference layer by applying an active energy ray-curable composition for forming an optical interference layer to one surface of another support substrate;
• and
• a lamination step of bonding a surface of the uncured hard coat layer on a side opposite from the transparent support substrate and a surface of the uncured optical interference layer on a side opposite from the other support substrate to obtain the laminated film, wherein
• a stretch ratio of the laminated film at 160° C. is 50% or more,
• the laminated film heat-treated at a temperature of 90° C. for 30 minutes has a minimum value RAH of a reflectance taken between wavelengths of 380 nm and 780 nm of 2% or less and measured from a side of the uncured optical interference layer,
• the composition for forming the optical interference layer comprises a first layer-forming component and low-refractive particles,
• the first layer-forming component comprises a first reactive component having two or more polymerizable functional groups in one molecule,
• the first reactive component comprises at least one selected from the group consisting of a first polymer having a weight-average molecular weight of more than 10,000, a first oligomer having a weight-average molecular weight of 10,000 or less, and a first monomer having a weight-average molecular weight of 10,000 or less, and
• a content X of the low-refractive particles, a total content Y of the first oligomer and the first monomer, and a content Z of the first polymer satisfy the following relationship:
• X
• +
• Y
• +
• Z
• =
• 100
• ,
• X
• >
• 3
• ⁢
• 0
• ¯
• ,
• Y
• >
• 0
• ¯
• ,
• Z
• ≥
• 0
• ,
• and
• Z
• ≤
• 1
• /
• 2
• ⁢
• X
• -
• 15
• ,
• provided that Y and Z are not 0 at the same time.