CONJUGATE FIBER HAVING LOW-TEMPERATURE PROCESSABILITY, NONWOVEN FABRIC AND FORMED ARTICLE USING THE CONJUGATE FIBER

To provide a conjugate fiber that demonstrates low-temperature processability and excellent thermal adhesiveness without shrinking significantly, can be processed with excellent card passability when processed into a nonwoven fabric, and can produce a bulky nonwoven fabric having excellent uniformit...

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Bibliographische Detailangaben
Hauptverfasser: TERADA, Hirokazu, KATSUYA, Masahito, FUJIWARA, Toshikatsu
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:To provide a conjugate fiber that demonstrates low-temperature processability and excellent thermal adhesiveness without shrinking significantly, can be processed with excellent card passability when processed into a nonwoven fabric, and can produce a bulky nonwoven fabric having excellent uniformity. Bulky nonwoven fabric and a formed article having excellent low-temperature processability and excellent feeling are also provided. A conjugate fiber in which a first component that contains at least 75% by weight of an ethylene α-olefin copolymer having a melting point of 70 to 100° C. and a second component that contains a crystalline polypropylene form a side-by-side cross section, wherein, in a fiber cross section perpendicular to a fiber axis, the first component accounts for 55 to 90% of an outer periphery of the fiber, a borderline between the first component and the second component forms a curve bulging toward the first component, and an area ratio between the first component and the second component (first component/second component) is in a range of 70/30 to 30/70; a nonwoven fabric obtained by processing the conjugate fiber into a nonwoven fabric; and a formed article obtained using the conjugate fiber.