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Patents

Absorbent Article Having a Pair of Rear Side Flaps

U.S. Patent No. 8,920,398 B2

Author Image

By: Karen McIntyre

Editor, Nonwovens Industry

Tsunetoshi Miura, Kobe, Japan and Yoko Munakata, Kobe, Japan. Assigned to The Procter & Gamble Company, Cincinnati, OH.
Filed: 11/30/05
Issued: 12/30/14
An absorbent article having a pair of longitudinal edges, front and rear transverse edges, a front end region, a rear end region, and a central region disposed between the front and rear end regions, wherein the front end region has a width defined between the longitudinal edges, the rear end region has a width defined between the longitudinal edges, and the ratio of the width of the rear end region to the width of the front end region ranges between 1:1 and 2.5:1, the absorbent article comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core disposed between the topsheet and the backsheet at least in the central region and the rear end region, the absorbent core having a pair of longitudinal edges; a pair of central side flaps each extending laterally outward from the corresponding longitudinal edge of the absorbent core in the central region; a pair of rear side flaps each extending laterally from the corresponding longitudinal edge of the absorbent core in the rear end region; a continuous support layer disposed on the backsheet in the rear end region, wherein the continuous support layer extends across the rear end region from one of the pair of rear side flaps to the other of the pair of rear side flaps, including laterally into the pair of rear side flaps, and wherein the continuous support layer is absent in the central side flaps; a pair of outwardly convex longitudinal central channels formed at least in the central region, the traversal distance between the pair of outwardly convex longitudinal central channels decreasing towards both ends of the channels to define a central closed area having a maximum width, wherein the traversal distance between the pair of outwardly convex longitudinal central channels reaches 20% of the maximum width; a rear channel defining a rear closed area in the rear end region, the rear channel being discontinuous from the pair of outwardly convex longitudinal central channels; a secondary channel within the rear closed area; and a uniform adhesive layer disposed between the continuous support layer and the backsheet in the rear end region; wherein the uniform adhesive layer uniformly bonds the continuous support layer to the backsheet in the rear end region.

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