A first layer (1) of filaments consisting of continuous crimped bicomponent filaments in an eccentric core / sheath structure, said filaments having a diameter in the range of 15 to 35 microns and exhibiting at least 3 crimps / cm； A second filament layer (2) disposed in direct contact with the first layer (1), the second layer (2) of the filament comprising a continuous core of an eccentric core / sheath structure Comprising a crimped bicomponent filament, the diameter of said filament being smaller than the diameter of the filament of the first layer (1), the diameter being in the range of 10-20 microns, showing at least 3 crimps / cm. Spunbond nonwoven web for collection / distribution layer.‐ 偏心コア／シース構造の連続捲縮二成分フィラメントからなり，前記フィラメントは１５～３５ミクロンの範囲の直径を有し，少なくとも３捲縮／cmを示すフィラメントの第１の層（１）と；前記第１の層（１）に直接接触して配置された第２のフィラメントの層（２）とを備え,前記フィラメントの前記第２の層（２）は，偏心コア／シース構造の連続捲縮二成分フィラメントを含み，前記フィラメントの直径は，第１の層（１）のフィラメントの直径よりも小さく，その直径は，１０～２０ミクロンの範囲であり，少なくとも３捲縮／cmを示す捕集／分配層用のスパンボンド不織ウェブ。
