Molding method and molding device

A shaping device that forms, in a predetermined shaping-target area of a film comprising a patterned face including a micropattern that has the minimum dimension of the width of the concavity and convexity in the planar direction formed equal to or smaller than 2 μm, and a rear face opposite to the patterned face, a curved face beyond a thickness of the film, the device comprising:

• a first casing that forms a first pressure chamber at the patterned-face side of the film;
• a second casing that forms a second pressure chamber at the rear-face side of the film;
• fixing means for fixing an outer edge of the shaping-target area of the film;
• pressure adjusting means for adjusting a pressure of fluid in the first pressure chamber and a pressure of fluid in the second pressure chamber, and applying the pressure difference as a shaping pressure to the shaping target-area of the film to form a curved side face;
• heating means for heating the film, wherein the heating means comprises a heat-transfer stage which is formed so as to be separable from the rear face of the film, and which uniformly heats a contacting portion with the film;
• and
• moving means for moving the heat-transfer stage to move towards and away from the film.