Ube Exsymo Co., Ltd.

Kouki Endou

Tatsunori Tsukahara

The present invention provides a chargeable sheath/core-structured fiber that contains a polypropylene-based resin as a main resin, wherein the sheath part contains (a) a carboxylic anhydride-modified polyolefin and (b) at least one antioxidant selected from the group consisting of a combined antioxidant a phenolic antioxidant and a phosphorus-based antioxidant, and sulfur-based antioxidants; and (c) an oil containing a polyoxyalkylene alkyl ether represented by the general formula (I) as a finishing oil is deposited on the outer surface of the sheath part, and that can satisfy heat resistance and charge retainability. (In the formula, Rrepresents a saturated or unsaturated aliphatic hydrocarbon group having 10 to 30 carbon atoms; Rrepresents a hydrogen atom or a methyl group; and k is an integer of 1 to 4.)

Chargeable core/sheath-structured fiber, nonwoven fabric obtained from said fiber, composite nonwoven fabric, nonwoven fabric processed article, and method for producing nonwoven fabric processed article

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Koriyama, Japan

Kouki Endou