| 摘要 |
PROBLEM TO BE SOLVED: To prevent a curvature of a curved elastic member along a leg surrounding part from getting loose while suppressing reduction in the flexibility of the leg surrounding part.SOLUTION: An underpants type disposable diaper 1 is provided, in which, when contracting parts of curved elastic members 26, 28 are divided at an interval for a change amount in the width direction being 5 mm, and the angle between a straight line k connecting both ends of each section and a line in the width direction is defined as a section angle α, the applied amount of hot-melt adhesive B2 for fixing the curved elastic members 26, 28 is 5-12 g/min a sharp curved section 100 made up of adjacent sections in which the increase of the section angle α is 5° or more as it goes to the side, the applied amount of hot-melt adhesive B3 is 3-5 g/min other gentle curved sections 101, and the applied amount of the hot-melt adhesive B2 is 1.5-4 times as much as the applied amount of the hot-melt adhesive B3. |
