| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polarizing laminate film, by which two polarizer layers can be simultaneously obtained within a range of ±0.3 point of a difference in the average of a visibility-corrected single-body transmittance represented in a percent unit.SOLUTION: The method for manufacturing a polarizing laminate film includes a stretching step of stretching a laminate film comprising a first polyvinyl alcohol resin layer, a base film and a second polyvinyl alcohol resin layer, and a dyeing step of dyeing the film. In the dyeing step, a proportion of a contact time difference (%) calculated by the formula of (proportion of contact time difference (%))=(T1-T2)/{(T1+T2)/2}×100 is within a range of ±4%, where T1 is a time period when the first polyvinyl alcohol resin layer is in contact with a dyeing solution and T2 is a time period when the second polyvinyl alcohol resin layer is in contact with the dyeing solution. |
