Method for producing polarizing film protected on one side and having transparent resin layer, method for producing polarizing film having adhesive layer, and method for producing image display device

The present invention provides a method for producing a polarizing film protected on one side and having a transparent resin layer, said polarizing film comprising a polarizing film that is protected on one side and as a result of having a protective film on only one surface of the polarizer, and a transparent resin layer provided on the polarizer surface of the polarizing film protected on one side, the method being characterized by: including, in the following order, a step (1) for preparing a polarizing film protected on one side as a result of having a protective film on only one surface of the polarizer, a step (2) for coating the polarizer surface of the polarizing film protected on one side with an aqueous coating solution that contains a resin component, and a step (3) for forming a transparent resin layer by drying the obtained coating film; the polarizer containing a polyvinyl alcohol resin and having a thickness of 10μm or less; and the variation in the water contact angle of the polarizer surface on which the transparent resin layer is formed being within the range of ±20° from the average water contact angle. As a result, the present invention makes it possible to suppress the occurrence of unevenness in appearance, even upon exposing this polarizing film protected on one side, equipped with a transparent resin layer, and using a thin polarizer to a humid environment.