Patent ID: 7923597
Filing Date: 2011-04-12
Classification: A61F

Abstract:
1. A disposable absorbent article comprising an absorbent core disposed between a topsheet and a backsheet, said absorbent core comprising: (a) a storage layer; and (b) a durable, hydrophilic fluid pervious core wrap, said core wrap surrounding at least a portion of said storage layer, said core wrap comprising: a nonwoven core wrap substrate formed from a plurality of fibers selected from the group consisting of polyolefin fibers, polyester fibers, and combinations thereof, said substrate including a top layer disposed between the storage layer and the topsheet and a bottom layer disposed between the storage layer and the backsheet, wherein said top layer of the substrate is coated with a hydrophilicity boosting composition and said bottom layer of the substrate is not coated with the hydrophilicity boosting composition, at least some of said fibers or portions thereof being disposed in said bottom layer of the substrate that is not coated with the hydrophilicity boosting composition are free of said hydrophilicity boosting composition, and wherein said hydrophilicity boosting composition comprises a hydrophilicity boosting amount of nanoparticles having a particle size of from about 1 to about 750 nanometers, and wherein said substrate has been treated with a high-energy surface treatment.