Solution film-forming method, cellulose ester film, protective film and polarizing plate

Abstract

A solution film-forming method including the steps of forming a film from a polymer solution in which a polymer is dissolved in an organic solvent transporting the film formed and passing the film through a drying area in which the film is heated to volatilize the organic solvent in the film to obtain a polymer film, wherein the film is passed through the drying area under the condition of −0.05≦εMD-εTD<+0.15, where a degree of stretching of the film in the transport direction within the drying area during transport is expressed as εMD and a degree of stretching of the film in the width direction within the drying area during transport is expressed as εTD.

Dependencies are inferred from the claim text.