| 摘要 |
PROBLEM TO BE SOLVED: To provide a bulky melt-blown nonwoven fabric excellent in flexibility. SOLUTION: This nonwoven fabric comprises thermoplastic superfine fibers spun by a melt-blowing method and having a fiber diameter of <=20μm. Therein, huge space layers which are occupied by spaces not containing fibers or containing the fibers so as not to occupy most of the spaces, even when the spaces contain the fibers, and which have widths of 30-200μm and lengths of 50-30000μm are distributed in multi-layers. The space layers have a total area of 10-85% in the cross section of the nonwoven fabric at an arbitrary position having a nonwoven fabric cross section area of at least 0.25cm<2> . |
