Chisso Corporation

Yoshimi Tujiyama

Masahiko Taniguchi

A polypropylene conjugate fiber is provided which is suitable to a broad temperature range of hot roll processing to easily produce a non-woven fabric having a high tenacity and a good feel. The fiber comprises as a first component, a crystalline polypropylene having an isotactic pentad ratio of 0.930 or less and as a second component, a crystalline polypropylene having an isotactic pentad ratio of 0.945 or more. The first component is arranged so as to occupy 80% or more of the fiber surface, and the crystallinity of the fiber determined by X-ray diffraction is 30 to 50%.

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Moriyama, Japan

Yoshimi Tujiyama