Techniques for recycling optical films are provided. A method for producing a regenerated (meth) acrylic resin film comprises the steps of: Depolymerizing an optical film in which a (meth) acrylic resin film and a first primer layer are laminated to obtain a (meth) acrylic ester monomer; and obtaining a (meth) acrylic resin group comprising a (meth) acrylic ester monomer or a monomer other than the (meth) acrylic acid monomer. The optical film is an optical film in which a (meth) acrylic resin film and a primer layer are laminated, and the (meth) acrylic resin film contains a resin of the same kind as a binder resin contained in the primer layer. Figure 5

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