Patent ID: 7223806

Claim:
A method for producing a film-like material made of a resin by rolling a thermoplastic resin material containing a thermoplastic resin using a molding apparatus comprising first rotation molding members composed of a pair of rollers, characterized in that the rolling is carried out under the condition 1 that the line contact pressure P (kN/m) applied to the thermoplastic resin, the peripheral velocity R (m/sec) of the rollers of the first rotation molding members, and the thickness H (m) of the film-like material made of the resin after rolling satisfy the following inequalities: 3×9.8 ≦P (formula 1) 3×9.8×10 −6 ≦P /( P/R/H 2 )≦2×9.8×10 −5 (formula 2).