| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a stretched film wound body of which a rate to be usable for an amount of the used resin is high.SOLUTION: There is provided a method for manufacturing a stretched film wound body which includes: an extrusion molding step of extrusion molding a thermoplastic resin to produce an unstretched film; a stretching step of uniaxially stretching or biaxially stretching the unstretched film to produce a stretched film; and a winding step of winding the stretched film, where a range of 90% or more in the width direction of the stretched film becomes a constant thickness.SELECTED DRAWING: None |
