| 摘要 |
PROBLEM TO BE SOLVED: To obtain a bulky nonwoven fabric with high flexibility or stretchability, suitable for absorptive items including sanitary goods, disposable diapers and absorptive sheets by designing the nonwoven fabric to consist mainly of specific thermofusible conjugate fibers and by forming thermobonded area and non-thermobonded area in specified proportions. SOLUTION: This nonwoven fabric 5-60 g/cm2 in basis weight is obtained by thermobonding of a web without pressure flattening of the fiber crossover points using a hot air processing machine; in this nonwoven fabric, the web is prepared by blending thermofusible conjugate fibers as the main fibers each composed of low- melting component and high-melting component, e.g. polyethylene/polyethylene terephthalate sheath/core-type thermofusible conjugate fibers, with another kind of fibers. This nonwoven fabric thus obtained is such that the total area thereof is made up of 20-80% of thermobonded area and the rest of non-thermobonded area, the stress portion corresponding to 40-60% of the maximum strength of the strength-elongation curve rectangular to the fiber axial direction exhibits a wavy fluctuation >=2% in coefficient of stress variation, drape coefficient is <=0.5, elongation at break is 100-200%, and the following relationship is satisfied: SE2V>=2.70×105 [S is the maximum strength (kgf/5 cm), E is elongation at break (%), and V is specific volume (cm3/g)].
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