| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily splittably which comprises a polyester alone and is uniformly split with an external force to form superfine fibers. SOLUTION: This splittable polyester hollow fiber comprises a polyester consisting mainly of a polyalkylene terephthalate containing a lactic acid-based polyester in an amount of 3 to 10 wt.%, and has a fiber cross-sectional shape which has three to five thin wall portions having a specific thickness.
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