| 摘要 |
A process for producing a potentially bulky yarn which is a substantially non-interlaced multifilament yarn of a thermoplastic synthetic fiber satisfying the characteristic values of Rmax/R</=2.5, DELTA S5>/=1.5, DELTA S50</=3.0, Y>/=1.3 and XT-X</=1.0, where Rmax is maximum tension fluctuation width, R is average tension fluctuation width of a normal portion, DELTA S5 is difference in maximum shrinkage among each filament of a sample having a length of 5 cm, DELTA S50 is difference in maximum shrinkage among each filament of a sample having a length of 50 cm, XT is maximum tension, X is average tension and Y is degree of bulkiness/dry heat shrinkage.
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