An air-laid nonwoven fabric having an uneven shape that improves filtration performance. An airlaid nonwoven fabric includes a plurality of valley surfaces (3) and raised surfaces (4) alternately provided adjacent to each other on one main surface (7a) of a sheet body (7), and valley surfaces (3 ) And a concave portion (1) that constitutes the seat body (7), and a convex portion (2) that has a raised surface (4) and that constitutes the seat body (7) integrally with the concave portion (1). The raised surface (4) includes an inclined surface (4a) formed between the center of the raised surface (4) and the valley surface (3), and short fibers constituting the sheet body (7) are inclined surfaces (4a). And protruding hair fibers (5) protruding outward. Thereby, filtration of an inclined surface is accelerated stimulated and uniform filtration is implement achieved in the whole uneven corrugated shaped surface. [Selection] Figure 2【課題】濾過性能を向上する凹凸形状を有するエアレイド不織布を提供する。【解決手段】エアレイド不織布は、シート本体(7)の一方の主面(7a)に互いに隣接して交互に設けられた多数の谷面(3)及び隆起面(4)と、谷面(3)を有しシート本体(7)を構成する凹部(1)と、隆起面(4)を有し凹部(1)と一体にシート本体(7)を構成する凸部(2)とを備える。隆起面(4)は、隆起面(4)の中央と谷面(3)との間に形成された傾斜面(4a)と、シート本体(7)を構成する短繊維が傾斜面(4a)から外側に突出する突毛繊維(5)とを有する。これにより、傾斜面の濾過を促進し、凹凸形状の表面全体で均一な濾過を実現する。【選択図】図２
