| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a beaten polyketone staple fiber, which is capable of producing a highly fibrillated beaten polyketone staple fiber in a short time. SOLUTION: In the method, a polyketone fibers having≥95 mol% of repeating units represented by formula (1), are cut to have a length of 1-20 mm and the cut fiber is beaten by a disk refiner to obtain a highly fibrillated beaten polyketone staple fiber, wherein the beating treatment is carried out with a plate having an edge having a width of 2-10 mm over the whole outer circumference. COPYRIGHT: (C)2008,JPO&INPIT
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