Polypropylene conjugate fiber
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United States of America Patent
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Sep 19, 1995
Grant Date -
N/A
app pub date -
Apr 7, 1994
filing date -
Apr 7, 1994
priority date (Note) -
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Abstract
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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