Patent ID: 7331946
Filing Date: 2008-02-19
Classification: A61F

Abstract:
1. A disposable pull-on undergarment which comprises: a liquid pervious top sheet; a liquid impervious back sheet; a liquid absorbent core interposed between the top and back sheets; front and rear waist-encircling regions opposed to each other and having longitudinal side edges that are joined together, at least one of said front and rear waist-encircling regions being elastically contractible in a waist-encircling direction; a crotch region positioned between the front and rear waist-encircling regions; a waist-encircling opening; a pair of leg-encircling openings; waist elastic members extending in the waist-encircling direction are attached in an extended condition to an edge portion of the waist-encircling opening; and a plurality of auxiliary elastic members spaced longitudinally apart from each other and extending in the waist-encircling direction in the first and second elasticized zones, said plurality of auxiliary elastic members being attached in an extended condition to a location between the waist elastic members and the edge portions of the leg-encircling openings, said from and rear waist-encircling regions each comprising: the first and second elasticized zones being adjacent to one another in the waist-encircling direction so that heights of ones of the first and second elasticized zones that are adjacent to one another in the waist-encircling direction are substantially coextensive along the waist-encircling direction and the first elasticized zones having a tensile stress that is greater than a tensile stress of the second elasticized zone, a tensile stress of the auxiliary elastic members is greater in the first elasticized zone than in the second elasticized zone.