| 摘要 |
PROBLEM TO BE SOLVED: To provide a crimping conjugate fiber capable of obtaining a non-woven fabric excellent in heat resistance, showing less bulk reduction on heat-processing, and having a large initial bulk and bulk recover. SOLUTION: The conjugate fiber contains a first component and second component, the first component contains 60-95 mass% polybutene-1 and 5-40 mass% polypropylene, the second component is a polymer having a melting point higher than that of the polybutene-1 by≥20°C, the first component occupies at least 20% of the conjugate fiber surface and the position of center of gravity of the second component is deviated from the position of center of the gravity of the conjugate fiber when viewed from a cross section of the conjugate fiber, and the conjugate fiber is the crimping conjugate fiber having at least one kind of crimp selected from a wave-formed crimp and spiral crimp. COPYRIGHT: (C)2007,JPO&INPIT
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