| 摘要 |
Provided is a pull-on an underwear-type disposable diaper (1) that has a pair of side seal sections (8) formed by bonding the overlapping sections (7) at the edges (6a) of both sides of an abdomen-side section and the edges (6b) on both sides of a back-side section. The aforementioned overlapping sections (7) have a waist edge region (71) on the edge of a waist opening section, said waist opening section having a larger number of layered sheets than other regions (72, 73). The layered sheet structure of the waist edge regions (71) on the abdomen-side section and the back-side section extends into the overlapping sections of the abdomen-side section and the back-side section. In the side seal sections (8), the total length of a fused section (81) on a skin-side edge (8e) in a seal region (8a1) formed by fusing the waist edge region (71) in terms of the unit length of the lengthwise direction is shorter than the total length of the same in seal regions (8a2, 8a3) formed by fusing the lower regions (72, 73) lower the waist edge region (71). |
