| 摘要 |
<p>Continuous synthetic fibers (21) are produced from melt-fused polymeric compounds extruded into sheet form (13) by passing the sheet (13) through a unique roller-cutter unit (18, 19) which cuts grooves into the sheet (13), followed by heating and tensilizing of the sheet (13) to convert the grooved sheet (13) into separated fibers (21). The invention is especially useful in producing fibers (21) from polymers which have low hot melt tensile strength and which are otherwise susceptible to frequent fiber breakage at high speed production. These polymers include very high nitrile polymers, highly desired for making precursor fibers for PAN (polyacrylonitrile) carbon fibers, as well as other similar types of polymeric fibers.</p> |
