Patent ID: 6015605
Filing Date: 2000-01-18
Classification: A61F,D01F,D04H,Y10T

Abstract:
A filament nonwoven fabric comprising thermoplastic fibers with a fineness of 0.1 to 10 d/f, having a basis weight of 5 to 35 g/m.sup.2, and having thermally press bonded portions, in which the conditions (A), (B), and (C) below are satisfied:(A) the area rate of the thermally press bonded portions being from 5 to 25%;(B) X.ltoreq.2.0 (mm)X: the average value of the distance between adjacent thermally press bonded portions in the mechanical direction of the nonwoven fabric;Y.ltoreq.2.5 (mm)Y: the average value of the distance between adjacent thermally press bonded portions in the direction perpendicular to the mechanical direction of the nonwoven fabric; and(C) the average value of the ratio between the maximum diameters of the thermally press bonded portions satisfying1.ltoreq.y/x.ltoreq.15,whereinx: the average value of the maximum diameter of the thermally press bonded portions in the mechanical direction of the nonwoven fabric; andy: the average value of the maximum diameter of the thermally press bonded portions in the direction perpendicular to the mechanical direction of the nonwoven fabric.