| abstract |
[PROBLEMS] To provide a method for producing a polarizing plate excellent in heat resistance, moisture resistance and visibility when wearing polarized sunglasses. A resin layer forming step of forming a polyvinyl alcohol-based resin layer 2 on at least one surface of a base film 1 to obtain a laminated film 3, wherein the laminated film 3 has a thickness of 10 μm or less. In the stretching process for obtaining a stretched film 4 by uniaxial stretching, the dyeing process for dyeing the stretched film 4 with a dichroic dye to form the polarizer layer 5 and the polarizing laminated film 6, the surface opposite to the substrate film 1 of the polarizer layer 5, a moisture permeability of not more than 200g / m 2 / 24hrs, and the in-plane retardation is 100nm or more, and, with respect to the absorption axis of the polarizer layer 5 A moisture-proof layer forming step of forming a moisture-proof layer 7 having a slow axis angle θ of 20 degrees or more and 70 degrees or less to obtain a multilayer film 8, and a peeling step of peeling the base film 1 from the multilayer film 8 Polarization The method of production. [Selection] Figure 1 |