| 摘要 |
The present invention provides a method of manufacturing a thermoplastic resin film comprising the steps of: extruding a molten thermoplastic resin from a die in a form of sheet; cooling and solidifying the thermoplastic resin sheet by sandwiching the sheet between a pressurizing/cooling roller and a press roller; and further cooling and solidifying the thermoplastic resin sheet while transferring the thermoplastic resin sheet by a plurality of cooling rollers, wherein the temperature of each of the cooling rollers is set at within a range of ±3° C. relative to sheet temperature of the thermoplastic resin sheet in contact with the cooling roller; at the same time, the sheet temperature of the thermoplastic resin sheet when removed from the cooling roller arranged most downstream of the cooling rollers is set to be equal to or less than a glass transition temperature Tg(° C.) of the thermoplastic resin -15° C. |
