| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a polarizing laminate film that is thin and excellent in strength.SOLUTION: A production method of a polarizing laminate film having a polarizing film layer on a substrate film is provided, the method including the steps of: forming a polyvinyl alcohol resin layer on a substrate film; stretching the laminate obtained in the step of forming the resin layer; and dyeing the polyvinyl alcohol resin layer with a dichroic dye after the stretching step to form a polarizing film layer. The step of forming the polarizing film layer includes a drying process after dyeing the polyvinyl alcohol resin layer with the dichroic dye, in which a temperature parameter represented by a product of a drying temperature (°C) and a drying time (min) is 220 to 350.SELECTED DRAWING: None |
