Wenderoth, Lind & Ponack, L.L.P.
Polyolefin fiber and non-woven fabric produced by using the same
 Polyolefin fibers are disclosed having a surface portion of a low-orientation domain and an inner portion of a high-orientation domain, the orientation parameter, as measured by the Raman spectroscopy, of the low orientation domain is smaller than that of the high orientation domain by 2.2 or more, but less than 8.0. By using the polyolefin fibers, non-woven fabrics having a high strength and excellent hand feeling can be provided. Further, since the fibers can be processed into nonwoven fabrics at a wide range of processing temperature when a point bonding method is used, non-woven fabrics having stabilized qualities can be prepared. 
Chisso Corporation
Y D D D D Y Y D D D D
Y10T D01F D04H D01F D04H Y10T Y10T D04H D04H D04H D04H
additional inventional inventional inventional inventional additional additional additional inventional inventional additional
Hidemi Masahiko Kazuhiko
Ito Taniguchi Aratake