| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a surface-modified cycloolefin resin film by treating a surface of a film comprising a cycloolefin resin with an organic solvent, in which increase in the concentration of the organic solvent remaining in the film (concentration of the residual solvent) and excessive decrease of retardance are suppressed. ! SOLUTION: The method for manufacturing a surface-modified cycloolefin resin film comprises treating a stretched film comprising a cycloolefin resin with an organic solvent that contains substantially no solute and gives a change to the cycloolefin resin by contact. The method includes a solvent application step of applying the above organic solvent and a drying step of allowing the film after the solvent application step to pass through a zone at a temperature higher at least by 10°C than the temperature when the organic solvent is applied; and a time period after the solvent application step is finished and until the film enters the drying st |
