US Patent 6867345 Disposable body fluid absorbent article having longitudinal side groove

A disposable body fluid absorbent article includes a liquid-absorbent core. The core is provided in the vicinity of opposite side edges extending in a longitudinal direction with depressed regions tapering from an upper surface toward a lower surface of the core. A density of the core components in the depressed regions is lower then or equal to a density of the core components in the remaining region of the core.