| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyolefin fiber by providing a polyolefin fiber capable of forming thick fibers and modified cross-section fibers, and dyeable with a disperse dye, further preventing draw down in melt spinning of polyolefin, and improving spinnability in such a manner that thick fibers or modified cross- section fibers are obtainable. SOLUTION: A polyolefin fiber formed from a polyolefin containing a homogeneously dispersed mixed powder consisting of a polytetrafluoroethylene (A) and an alkyl (meth)acrylic polymer (B) whose alkyl group has a carbon number of 5-30. When polyolefin is melt spun into polyolefin fibers, the mixed powder is added at a ratio of 0.05-10 pts.wt. to 100 pts.wt. of polyolefin, and they are melt spun after melt kneading.
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