| abstract |
The present invention provides a method for producing an optical film that is low in cost, excellent in peelability, fast in drying speed, excellent in heat resistance and mechanical properties. SOLUTION: The following steps 1 to 4 are included in order: Step 1: A step of casting an acrylic resin composition containing an acrylic resin and an organic solvent on a metal support to form a web, Step 2: The above web Step of peeling, Step 3: Step of stretching the web, Step 4: Step of drying the web, and the organic solvent have a good solvent and a molecular volume within the range of 40.4 to 225.0 cm 3 / mol. Alcohol is contained, the content of the alcohol in the organic solvent is in the range of 5 to 40% by mass, and the web when the web is peeled in Step 2 is in the range of 10 to 150% by mass. A method for producing a film, wherein the web before entering Step 4 contains 3% to 30% by mass of the good solvent. [Selection] Figure 1 |