High strength fusing conjugate fiber

摘要: PROBLEM TO BE SOLVED: To provide a method for producing high strength fusing conjugate fiber industrially at low cost. SOLUTION: The comprises crystalline propylene-based polymer as the core component and olefinic having lower melting point than that of sheath component, wherein has ratio weight-average molecular weight measured by cross fractionation chromatograph to (core weight/sheath weight) in specific range. By properly selecting melt flow rate both components after discharged from nozzles obtain undrawn fiber, can be drawn magnification development draw is high, so obtained. COPYRIGHT: (C)2007,JPO&INPIT