Patent ID: 7825290
Filing Date: 2010-11-02
Classification: A61F

Abstract:
1. An absorbent article comprising a topsheet, a backsheet, and an absorbent core interposed between said topsheet and said backsheet, said absorbent article having a periphery, said topsheet and said backsheet extending laterally and longitudinally beyond said absorbent core, thereby surrounding said absorbent core and forming said periphery of said absorbent article, said absorbent core comprising a liquid storage region and a liquid acquisition/distribution region positioned between said liquid storage region and said topsheet, said acquisition/distribution region comprising a first acquisition/distribution layer and a second acquisition/distribution layer with a liquid permeable evaporation barrier layer disposed between said first and said second acquisition/distribution layers, said second acquisition/distribution layer being positioned between the liquid storage region and the evaporation barrier, said barrier layer comprising a film material including a first plurality of apertures having individual open areas of more than about 1.4 mm 2 and less than about 3.0 mm 2 and a second plurality of apertures having a mean aperture size smaller than a mean aperture size of said first plurality of apertures, wherein said article provides an area specific evaporation rate of less than 150 g/m 2 /hr when submitted to the disclosed Evaporation Rate test.