| 摘要 |
The invention provides a method for manufacturing a polarizing film, a polarizing film, a polarizing plate and an image display device. The method for manufacturing the polarizing film is a method of manufacturing a polarizing film of a thickness of less than 10 [mu]m by at least carrying out processes of dying and stretching on a laminated body having a polyvinyl alcohol-based system resin layer filmed on thermoplastic base resin. In the dying process, the characteristics (monomer transmittance, degree of polarization) of the polarizing film can be satisfied even in a dyebath using a dichroism material of high concentration. In the method of manufacturing a polarizing film of a thickness of less than 10 [mu]m by at least carrying out processes of dying and stretching on a laminated body having a polyvinyl alcohol-based system resin layer filmed on thermoplastic base resin, a treatment bath having at least one water-soluble antioxidant is used for treatment in at least one process after the dying process. |
