POLY(METH)ACRYLIMIDE FILM, EASY-ADHESION FILM USING SAME, AND METHOD FOR MANUFACTURING SUCH FILMS

摘要

The present invention relates to a poly(meth)acrylimide film with outstanding surface smoothness, transparency, and appearance and low retardation and a method for manufacturing such a film. The present invention provides a poly(meth)acrylimide film that has (i) a total light transmittance of over 90% and (ii) haze of 2.0% or less. This film preferably has retardation of less than 50 nm. The method for manufacturing this film comprises the following: (A) a step in which, using a device provided with an extruder and a T die, a poly(meth)acrylimide molten film is continuously extruded from the T die; and (B) a step in which the poly(meth)acrylimide molten film is loaded by being fed between a rotating or circulating first mirrored-surface body and a rotating or circulating second mirrored-surface body, and then the film is pressed. During these steps, (C) the surface temperature of the first mirrored-surface body is in the range 100-200°C, and (D) the surface temperature of the second mirrored-surface body is in the range 20-200°C.