To obtain the subject nonwoven fabric consisting of a spunbonded nonwoven fabric, having each specific thermofused portions and napped portions, thus bearing adsorptivity and holding ability for minute dust such as soil dust, also excellent in trapping performance for relatively large-sized dust such as bread crumb and the hair.
This nonwoven fabric, which consists of a spunbonded nonwoven fabric, has thermofused portions 12a-12c as a result of mutual fusing of the constituent fibers 11a-11c and napped portions as fiber ends 13a-13d as a result of tensile breakage of the constituent fibers, and has the following characteristics: basis weight stands at 20-100g/m2, bulk density stands at 0.03-0.13g/cm3, and the fineness of the constituent fiber stands at 1-15 denier. It is preferable that there exist the napped portions at 10-100/cm on the surface, the area of each of the thermofused portions 12a-12c stands at ≤2mm2, the distance between the centers of the thermofused portions 12a-12c adjacent to one another stands at 1-5mm, and the total area of the thermofused portions 12a-12c accounts for 5-30% of the surface area of this nonwoven fabric. Besides, it is preferable that a partially fused nonwoven fabric is raised by needle punching at a needle depth of at least 1st varve and ≥5mm.
YUASA HARUO
ONO KEIJI
NAKAGAWA MIKIO
