Patent ID: 7090665
Filing Date: 2006-08-15
Classification: A61F

Abstract:
1. A disposable diaper comprising: an air permeable cover member having front and rear waist regions and a crotch region; and a body fluid absorbent member attached to an inner surface of said cover member; said body fluid absorbent member extending in a longitudinal direction across said crotch region into said front and rear waist regions, said body fluid absorbent member having front and rear end portions that are fixed to the inner surface of said cover member at said front and rear end portions thereof, said body fluid absorbent member including a liquid-pervious topsheet to be placed against a wearer's body, an air permeable backsheet to be placed against said inner surface of said cover member, and a body fluid absorbent core disposed between the liquid-pervious topsheet and said backsheet, said body fluid absorbent core being formed on a side facing said backsheet with at least one groove that is concave in a direction from said backsheet toward said topsheet, each of said at least one groove consists of a first segment that extends continuously into the crotch region and the front waist region and a second segment that extends continuously into the crotch region and the rear waist region, said first and second segments of each individual ones of said at least one groove being aligned with one another longitudinally, being excluded from extending across a longitudinal center of the crotch region of the diaper, being excluded from extending into the front and rear end portions of the diaper, and being adjacent one another in the longitudinal direction but for the exclusion from the longitudinal center of the crotch region, said body fluid absorbent member having a longitudinal length that extends between and to the front and rear end portions of the diaper.