Latex bonded acquisition layer having pressure insensitive...

A - Human Necessities – 61 – F

Patent

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A61F 13/537 (2006.01)

Patent

CA 2534613

The present invention relates to absorbent articles, such as diapers and sanitary napkins, and acquisition layers useful for such articles. More specifically, the invention relates to an acquisition layer for an absorbent article, the liquid acquisition layer com-prising a multitude of fibers and a binder, the liquid acquisition layer having a caliper which decreases in response to external pressure and increases upon removal of said external pressure. In accordance with the present invention the increase in caliper is measured by the recovery value as defined herein and the liquid acquisition layer recov-ery value at 45 C is at least 65 % of the recovery value at 20 C.

La présente invention concerne des articles absorbants, tels que des couches et serviettes hygiéniques, et des couches d'absorption utiles pour de tels articles. L'invention concerne également une couche d'absorption destinée à l'article absorbant, la couche d'absorption de liquide comprenant une multitude de fibres et un liant. La couche d'absorption de liquide a une épaisseur qui décroît sous l'action d'une pression externe et augmente lors de la suppression de cette pression externe. Conformément à la présente invention, l'augmentation d'épaisseur est mesurée par la valeur résiduelle selon la définition donnée, la valeur résiduelle de la couche d'absorption de liquide à 45 ·C étant d'au moins 65 % de la valeur résiduelle à 20 ·C.

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