| 摘要 |
<p>Provided is a method for producing a polypropylene fiber, which can produce a high-strength polypropylene fiber without requiring any special raw material and/or any special means. A method for producing a polypropylene fiber, comprising a melt extrusion fiber spinning step, a cold storage step and a drawing step, wherein the ratio of a take-up speed to an extrusion speed in the melt extrusion fiber spinning step is 50-750.</p> |
