| 摘要 |
PROBLEM TO BE SOLVED: To obtain an opened nonwoven fabric useful for a wiper, etc., light in weight, low in elongation at break in the width direction, excellent in dimensional stability, by interlacing a fiber web by jetting a high-pressure fluid flow and rearranging the fibers to give the nonwoven fabric having formed open holes. SOLUTION: A high-pressure fluid is jetted to a fiber web containing >=10wt.% of thermoplastic fibers such as nylon 6, the fibers are mutually interlaced and simultaneously rearranged to give a nonwoven fabric having formed open holes. The nonwoven fabric is drawn in the cross direction and heat-treated at a temperature to soften or melt the thermoplastic fiber to give an opened nonwoven fabric having 10-60g/m<2> weight and 15-80% elongation at break in the cross direction. Preferably, the opened nonwoven fabric is drawn at >=10% and <=A×0.8% stretching rate when the elongation at break in the cross direction of the nonwoven fabric before the elongation is A.
|
