| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical film containing little impurities and excellent in physical properties and surface appearance, and to provide a method for producing the same. <P>SOLUTION: The method for producing the optical film containing little impurities and excellent in physical properties and surface appearance is provided, including the following process: An acrylic resin is melt-extruded using an extruder provided with either a barrier flight screw or a screw with a mixing section with the cylinder and die of the extruder preset at a temperature lower than the glass transition temperature of an acrylic resin plus 145°C. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
