Patent ID: 7056311

Claim:
A sanitary napkin comprising: an elongated main body having an skin-side surface and a garment-side surface and including a liquid absorbent layer for absorbing liquid applied to the skin-side surface and a backsheet appearing on the garment-side surface; fold-back flaps configured to be folded back against an outer surface of an undergarment at a crotch part thereof in use, the fold-back flaps projecting outward from transversely opposite sides of the main body and having front pressure-sensitive adhesive layers on garment-side surfaces thereof for adhering the fold-back flaps to the outer surface of the undergarment; rear flaps configured to be placed on an inner surface of the undergarment in use in an unfolded state, the rear flaps projecting outward from the transversely opposite sides of the main body and having rear pressure-sensitive adhesive layers on garment-side surfaces thereof for adhering the rear flaps to the inner surface of the undergarment, the rear flaps being located rearward of the fold-back flaps and longer in length than the fold-back flaps; and longitudinally extending leakage preventing walls disposed on the skin-side surface of the main body and at equal distances on each side of a longitudinal centerline, each leakage preventing wall having front and rear ends fixed to the skin-side surface, said front end spaced away from the longitudinal frontal edge of the main body and said rear end spaced away from the longitudinal rear edge of the main body, and a plurality of elastic members extending longitudinally an entire length of the leakage preventing wall and for exhibiting an elastic contractive force to bring the front and rear ends of the leakage preventing wall closer to each other so as to rise from the skin-side surface, wherein the rear pressure-sensitive adhesive layers are separately located forward and rearward from the rear ends of the leakage preventing walls.