Patent ID: 6821271
Filing Date: 2004-11-23
Classification: A61F

Abstract:
A disposable undergarment, comprising:a front waist region, a rear waist region and a crotch region extending longitudinally of said undergarment between the front and rear waist regions, said crotch region having transversely opposite side edges curving inward transversely of said undergarment to define peripheral edges of leg-openings of said undergarment; first and second elastic members each including opposite end portions and a middle portion disposed between and connecting the end portions; each of the end portions of the first elastic member extending along a front end portion of one of said transversely opposite side edges of said crotch region, the middle portion of the first elastic member extending across said crotch region; each of the end portions of the second elastic member extending along a rear end portion of one of said transversely opposite side edges of said crotch region, the middle portion of the second elastic member extending across said crotch region; the first and second elastic members being completely spaced apart in a longitudinal direction of said undergarment without contacting or crossing each other; a pair of third elastic members each extending along one of said transversely opposite side edges of said crotch region and curving inward transversely of said undergarment; each of said third elastic members having a front portion extending alongside at least a part of one of the end portions of the first elastic member, and a rear portion extending alongside at least a part of one of the end portions of the second elastic member; wherein a tensile stress of overlapping zones in which the front and rear portions of said third elastic members extend alongside the respective end portions of said first and second elastic members is higher than that of non-overlapping zones in which said first, second and third elastic members do not extend alongside each other; said disposable undergarment further comprising: a liquid-absorbent panel including a liquid-absorbent core disposed between a liquid-pervious topsheet and a leak-barrier sheet; and a liquid-impervious backsheet; said panel being joined to said backsheet with said leak-barrier sheet lying between the backsheet and the core; said first and second elastic members being attached to said backsheet; and said third elastic members being attached to transversely opposite side edge portions of said panel extending along said transversely opposite side edges of said crotch region.