Method for producing antifouling film

A method for producing an antifouling film including a polymer layer that includes on a surface thereof an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light, the method comprising:

• Process (1) of applying a resin to a surface of a substrate;
• Process (2) of pushing the substrate to a die with the resin in between to form the uneven structure on a surface of the resin;
• and
• Process (3) of curing the resin including the uneven structure on the surface thereof to form the polymer layer,
• the resin containing an antifouling agent that contains a compound containing a perfluoro(poly)ether group, and a compatibilizer that is compatible with the antifouling agent,
• the compatibilizer being a monofunctional monomer containing an amide group,
• the resin containing 20 to 40 wt % of the compatibilizer, and
• the die including a surface having undergone release treatment using a release agent containing a compound that contains a perfluoro(poly)ether group, a hydrolyzable group, and a Si atom.