| 摘要 |
PROBLEM TO BE SOLVED: To prevent a reduction in fitting properties at end parts of a waist or the like while an abdominal side exterior body and a back side exterior body have a simple structure without a folding of a sheet material.SOLUTION: In an underpants type disposable diaper, a contracting belt 12 continuing in the form of a belt is formed by sandwiching elastic expanding and contracting members 15 to 19 between a first sheet material 12S and a second sheet material 12H and joining a region where the first sheet material 12S and the second sheet material 12H are overlapped not at both end parts in a CD direction but in a region between them. A pair of divided expanding and contracting belts 12f, 12b is formed by cutting the expanding and contracting belt 12 between the elastic expanding and contracting members 15 to 19 in the middle in the CD direction and at joining positions of the first sheet material 12S and the second sheet material 12H. The positions of the divided expanding and contracting belts 12f, 12b are interchanged with each other in the CD direction, or the divided expanding and contracting belts 12f, 12b are vertically inverted, respectively. An abdominal side exterior body 12F and a back side exterior body 12B are formed by the pair of the divided expanding and contracting belts 12f, 12b. |
