| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot-melt adhesive conjugate fiber from which an ultrafine heat-shrinkable conjugate fiber is obtained at high productivity by easily and stably expressing a flow-drawing process of a polyester undrawn yarn. <P>SOLUTION: The hot-melt adhesive conjugate fiber is obtained by drawing an undrawn yarn comprising a polyester as a first component and an olefin-based polymer having a lower melting point than that of the first component, as a second component, and the fiber has a birefringence of 0.150 or less and a ratio of birefringence between the first component to the second component of 3.0 or less. The flow-drawing process can be easily and stably expressed using conventional production facilities, and the heat-shrinkable fiber, a drawn intermediate, and an ultrafine hot-melt adhesive conjugate fiber produced by redrawing the drawn intermediate can be obtained with high productivity and excellent runnability. <P>COPYRIGHT: (C)2009,JPO&INPIT |
