PROBLEM TO BE SOLVED: To provide an underpants type absorbent article having an external appearance more approximate to an underwear, easy to attach and detach, excellent in fitting feeling and touch at the time of wearing, and hardly becoming stuffy at the time of wearing to be excellent in air permeability.SOLUTION: There are included: an interior body 20 and an exterior body 10 positioned on a skin noncontact surface of the interior body 20, and divided into a ventral part 11, a crotch part 13 and a back side part 12. The ventral part 11 and the back side part 12 are constituted of a composite sheet integrated by heat-sealing or ultrasonic adhering a plurality of nonwoven fabrics 14 to an elastic film 15 between the nonwoven fabrics 14. The elastic film 15 has a plurality of opening parts arranged in a zigzag shape in a plane view. The opening part has a short side of 0.1 mm-0.3 mm in the extension/contraction direction, and a long side of 0.3 mm-0.7 mm in a direction crossing the extension/contraction direction, and the opening parts adjacent to each other have a distance of 0.5 mm-1.0 mm in the extension/contraction direction, and a distance of 0.3 mm-0.7 mm in a direction crossing the extension/contraction direction.COPYRIGHT: (C)2016,JPO&INPIT【課題】下着により近い外観を有し、はき易く、脱ぎ易く、着用時のフィット感及び肌触りが良好であるとともに、着用時に蒸れにくい通気性に優れたパンツ型吸収性物品を提供する。【解決手段】内装体20と、内装体20の非肌当接面側に位置し、腹側部11、股下部13及び背側部12に区分される外装体10と、を備え、腹側部11及び背側部12は、複数の不織布14と、不織布14の間に伸縮性フィルム15とを熱融着又は超音波接着により一体化された複合シートで構成され、伸縮性フィルム15は、平面視において千鳥状に配置される複数の開口部を備え、開口部は、伸縮方向に対して0.1mm以上0.3mm以下の短辺と伸縮方向と交差する方向に対して0.3mm以上0.7mm以下の長辺と、有し、隣接する開口部どうしは、伸縮方向に0.5mm以上1.0mm以下の距離と、伸縮方向と交差する方向に0.3mm以上0.7mm以下の距離と、を有する。【選択図】図3
