| abstract |
The present invention relates to a poly (meth) acrylimide film excellent in surface smoothness, transparency and appearance, and having a small retardation, and a method for producing the same. The present invention provides a poly (meth) acrylimide film satisfying (i) a total light transmittance of more than 90% and (ii) a haze of not more than 2.0%. The film preferably has a retardation of less than 50 nm. (A) a step of continuously extruding a molten film of poly (meth) acrylamide from a T die using an apparatus equipped with an extruder and a T die; (B) Meth) acrylic imide is supplied between a first mirror body rotating or circulating and a second mirror body rotating or circulating, and pressurizing the film. Among these processes, (C) the surface temperature of the first facer is 100-200 ° C, and (D) the surface temperature of the second facer is 20-200 ° C. |