| 摘要 |
PROBLEM TO BE SOLVED: To obtain a conjugated multicomponent staple fiber having a cross section in which all of the periphery of the fiber is covered with polylactic acid, free from peeling or splitting in the longitudinal direction of the fiber after card processing or needle punching, and capable of peeling or splitting due to the decrease of the toughness of polylactic acid caused by passing the fiber in hot water. SOLUTION: This fiber has a cross section in which the polylactic acid 2 and (A) high polymer 1 are alternately arranged, and the weight ratio of the polylactic acid 2 component and the (A) high polymer 1 in the range of 90/10-10/90, all of the periphery of the longitudinal direction is covered with the polylactic acid 2 and the thickness of the polylactic acid 2 covering the (A) polymer 1 is 0.05-2.0μm.
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