| 摘要 |
PCT No. PCT/GB97/01261 Sec. 371 Date Nov. 6, 1999 Sec. 102(e) Date Nov. 6, 1999 PCT Filed May 9, 1997 PCT Pub. No. WO97/43470 PCT Pub. Date Nov. 20, 1997A process for producing meltblown polyolefin fibres having an effective diameter of less than 5 microns, comprising providing a polyolefin having a melt flow index of at least 1000, mixing a fluorochemical with the polyolefin in order to increase the melt flow index of the polyolefin to at least 2000, and meltblowing the polyolefin with the fluorochemical in order to produce the meltblown polyolefin fibres, and the polyolefin being such that during the meltblowing the fluorochemical is able to migrate to the surface of the formed polyolefin fibres without the need for a separate annealing step.
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