Absorbent article having anti-wicking crimp seal

A - Human Necessities – 61 – F

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A61F 13/15 (2006.01)

Patent

CA 2163194

An absorbent article is disclosed for absorbing liquids, including body fluids such as menstrual discharges or urine. The absorbent article has a liquid impermeable backsheet on which is dis- posed an absorbent core, and first and second liquid permeable topsheet lay- ers. The edge of the absorbent core defines a perimeter, and the first and second topsheet layers and the back- sheet each extend laterally beyond the perimeter to define a continuous bor- der segment surrounding the absorbent core. A liquid impermeable seal is formed in the border segment which surrounds the perimeter for preventing lateral migration of liquid from the ab- sorbent core beyond the seal. The seal is formed to extend from an outer surface of the first topsheet layer to an outer surface of the backsheet, for establishing a capillary gradient in the second topsheet layer, thereby inhibiting wicking of fluid therethrough.

Article absorbant, destiné à absorber des liquides, notamment des fluides corporels tels que les flux menstruels ou l'urine. L'article absorbant présente une feuille de support imperméable aux liquides sur laquelle est disposé un noyau absorbant, et une première et une deuxième couche supérieure perméables aux liquides. Le bord du noyau absorbant définit un périmètre, et les première et deuxième couches supérieures et la feuille de support s'étendent chacune latéralement au-delà du périmètre pour définir un segment de bordure continu entourant le noyau absorbant. Un joint imperméable aux liquides est formé dans le segment de bordure qui entoure le périmètre pour empêcher la migration latérale du liquide depuis le noyau absorbant au-delà du joint. Le joint est façonné de manière à s'étendre d'une surface externe de la première couche supérieure à une surface externe de la feuille de support, de manière à créer un gradient de capillarité dans la deuxième couche supérieure, afin d'empêcher que le fluide ne le traverse par effet mèche.

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