| 摘要 |
PROBLEM TO BE SOLVED: To devise a bonding pattern so as to be able to achieve a balance between keeping of strength of underpants at time of wearing and easiness to break them after use by making side-bonding parts at left and right sides hard to be broken by heat seal, and that, by well maintaining ends of flexible elastic members with the side-bonding parts. SOLUTION: A basic bonding part 9A of a side-bonding part 9 is made to be an adhesion line group 9a of a vertical straight line, and additional bonding parts 9 B, 9C are made to be two rows of adhesion line groups 9b, 9c of a slanting straight line. The basic bonding part 9A is arranged at an inner side toward the width of underpants against the additional bonding parts 9B, 9C, and the two adhesion line groups 9b, 9c of the additional bonding parts 9B, 9C are arranged so as to adhere and hold in crossing an end of each elastic flexible member 8a to 8c extending from waist/abdomen part or the like to both side edges of the underpants.
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