PROBLEM TO BE SOLVED: To provide an underpants type absorbent article that is soft and can be reinforced without breaking an elastic member.SOLUTION: An underpants type absorbent article (1) comprises an absorbent body (10) comprising an absorbent core (13), and an exterior member (30) joined to the absorbent body (10), and a waist opening (BH) and a pair of leg openings (LH) are formed. The exterior member (30) comprises a laminated part (30s) in which a first sheet member (31), a second sheet member (32), and a third sheet member (33) are laminated in order from a skin side toward a non-skin side in a thickness direction. The first sheet member (31) and the second sheet member (32) are intermittently welded and joined by a plurality of welded parts (60a). An elastic member (34) is arranged between the second sheet member (32) and the third sheet member (33), and the second sheet member (32) and the third sheet member (33) are joined by an adhesive.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】柔らかく、且つ、弾性部材を破断させることなく補強することができるパンツ型吸収性物品を提供する。【解決手段】吸収性コア（１３）を有する吸収性本体（１０）と、吸収性本体（１０）に接合された外装部材（３０）とを備え、胴回り開口（ＢＨ）及び一対の脚回り開口（ＬＨ）が形成されたパンツ型吸収性物品（１）であって、外装部材（３０）は、厚さ方向の肌側から非肌側に向かって、第１シート部材（３１）、第２シート部材（３２）、及び、第３シート部材（３３）が順に積層された積層部（３０ｓ）を有し、第１シート部材（３１）と第２シート部材（３２）は、複数の溶着部（６０ａ）によって、間欠的に溶着されて接合されており、第２シート部材（３２）と第３シート部材（３３）との間には弾性部材（３４）が配置されているともに、第２シート部材（３２）と第３シート部材（３３）は接着剤で接合されている。【選択図】図３
