Abstract: A non-woven fabric comprising staple fibers, having a fiber length of 3 to 25 mm and a single fiber fineness of 1 to 100 denier, and is produced by the fibers being dropped while being dispersed to be accumulated and adhered at the intersection point of the staple fibers. The non-woven fabric has a specific volume of 40 to 200 cm3/g, and the number of fiber lumps having a volume of not less than 1 mm3 is not more than 5 lumps per 20 g of the non-woven fabric. The bulky non-woven fabric of the present invention in which the sufficient contribution to bulkiness by fibers is exhibited is suitable for sanitary materials, such as disposable diapers, sanitary napkins, incontinence pads, nursing pads or the like, or wipes etc.

Abstract: A polyolefin-based splittable conjugated fiber which contains a peroxide and has a melt flow rate of at least 30 g/10 min, and a nonwoven fabric comprising split fibers obtained by splitting the splittable conjugated fiber, and an absorbent article using the nonwoven fabric in a part thereof. The polyolefin-based splittable conjugated fiber has good spinnability and good stretchability, and is easy to split. This invention further provides a nonwoven fabric that is soft and uniform and has a good formation, and an absorbent article using such a nonwoven fabric in a part thereof, by solving the difficulty in splitting for a polyolefin-based splittable conjugated fiber, which has been its conventional problem.