| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-woven fabric which has a high effect of improving touch feeling, draping, soft and bulkiness feeling as well as diffusing water (high spreading), and a sheath core type composite fiber having a wide range of fineness. SOLUTION: A composite fiber of crypto-irregular sheath core is a composite fiber comprising: a sheath part made from a resin composition (A) comprising a polyolefin resin (a) and a noncrystalline resin (b); and a core part comprising a thermoplastic resin (B) in which a melting point of the polyolefin resin (a) is lower than that of the thermoplastic resin (B) and a glass transition point (Tg) of the noncrystalline resin (b) is higher than that of the polyolefin resin (a), and the irregular shape on the surface of the sheath part can be formed by heat treatment of the composite fiber. COPYRIGHT: (C)2012,JPO&INPIT |
