Patent ID: 6758838
Filing Date: 2004-07-06
Classification: A61F

Abstract:
A disposable undergarment comprising:a substantially liquid-impervious base sheet having an inner surface; a liquid-absorbent panel attached to the inner surface of said base sheet; a front waist region; a rear waist region; and a crotch region extending between the front waist region and the rear waist region, said crotch region having transversely opposite sides, said transversely opposite sides of the crotch region including transversely opposite side edge portions configured to define leg-holes curving transversely inward so as to describe arcs, said base sheet being folded back at least once onto itself along said transversely opposite side edge portions configured to define the leg-holes without any intermediate element positioned between portions of the base sheet that are folded back onto itself, said base sheet having a basis weight in said transversely opposite side edge portions configured to define the leg-holes that is higher than a basis weight in a remaining area of said base sheet, said base sheet having a tensile stress that is higher in said transversely opposite side edge portions than a tensile stress in the remaining area of said base sheet, said disposable undergarment further comprising a substantially liquid-impervious cover sheet placed on said liquid-absorbent panel and on sheet, said cover sheet having an elastic stretchability and at least one opening that is elongated in an inner surface of said base sheet so as to cover a substantially entire area of said liquid-absorbent panel and said base said longitudinal direction with a peripheral portion thereof joined to a peripheral portion of said base sheet, said cover sheet further being folded back at least once onto itself and joined together along said transversely opposite side edge portions configured to define the leg-holes so that a basis weight of said cover sheet is higher in said transversely opposite side edge portions configured to define the leg-holes that a basis weight in a remaining area of said cover sheet and a tensile stress of said cover sheet is higher in said transversely opposite side edge portions configured to define the leg-holes than a tensile stress in the remaining area of said cover sheet.