| 摘要 |
<p>A spinneret comprising a plurality of combined orifices having corresponding parts in corresponding arrangement, said parts and arrangement including two or more individual capillaries disposed in angular or parallel relationship, separated by a land and arranged to spin a variable denier filament, the improvement comprising, said combined orifices having different nominal dimensions such that either, a) corresponding capillary lengths differ by at least 0.0007 inch; b) corresponding capillary transverse dimensions differ by at least 0.0002 inch; c) the included angles between the corresponding capillaries differ by at least 1 degree; or d) the land widths between corresponding capillaries differ by at least 0.0006 inch, said different nominal dimensions of said combined orifices being selected to reduce doff-to-doff property variations of yarns spun from said spinneret. Yarns spun from such spinnerets have less doff-to-doff average standard deviation of yarn bulk since the spinneret has a plurality of combined orifices having different nominal dimension, rather than all combined orifices having identical nominal dimensions.</p> |
