| 摘要 |
PURPOSE:To provide the subject non-woven fabric having high strengths in both the longitudinal and transverse directions and excellent punchability and useful for filters by limiting a ratio between the strengths of the non-woven fabric in both the longitudinal and transverse directions in a specific range and specifying the strength of the fabric in the transverse direction at >= a specific value. CONSTITUTION:The objective non-woven fabric is substantially prepared of filaments having an average fiber diameter of <=10mum by a melt blow method and has a DTT/DTM ratio of 1.5-10 between the strength DTT of the fabric in the longitudinal direction and the strength DTM thereof in the transverse direction and the strength of >=5 (g/cm weight) in the transverse direction. For example, polyethylene terephthalate fibers are preferably used as the fibers composing the non-woven fabric. |
