Patent ID: 6575948
Filing Date: 2003-06-10
Classification: A61F

Abstract:
A sanitary napkin having a longitudinal direction and a transverse direction, said sanitary napkin comprising:a liquid-pervious topsheet; a liquid-impervious backsheet; a liquid-absorbent core disposed between the liquid-pervious topsheet and the liquid-impervious backsheet, said liquid-absorbent core having a transverse cross-section which is curved toward said liquid-pervious topsheet; and a pad positioned against a lower surface of said liquid-absorbent core in a curved zone thereof, said pad being convexly curved toward said liquid-pervious topsheet and in substantial conformity with the liquid-absorbent core, a surface of said pad which is placed against said liquid-absorbent core comprises a plurality of discrete projections and continuous troughs that include a plurality of trough sections each defined between adjacent ones of said plurality of projections so that the trough sections extend longitudinally as well as transversely of said liquid-absorbent core to intersect one another, and opposite ends of each trough section terminating at a peripheral edge of said pad, said pad being placed against said lower surface of said liquid-absorbent core at tops of said plurality of projections so that a plurality of tunnel sections each having opposite ends opened at said peripheral edge of said pad are formed between said continuous troughs and said lower surface of said liquid-absorbent core.