Absorbent article having integral wicking barriers

Details Absorbent article having integral wicking barriers Absorbent article having integral wicking barriers

A - Human Necessities

61

F

A61F 13/15 (2006.01)

Patent

CA 2345608

An absorbent article comprising a central absorbent member and a lateral wicking barrier for inhibition of wicking from the central regions of the article to an outlying outer absorbent member. The wicking barrier has a vertical component for prevention of radial wicking in the plane of the article and thus promotes center filling of the article with fluid and reduces the likelihood of leaks from the sides of the article. The wicking barrier can also have a horizontal component to prevent leakage, redirect fluid flow, and improve fit and performance of the article. In one embodiment, the central absorbent member is a concentric absorbent structure having alternating rings of barrier material and absorbent material, including a spiral wound composite formed from a layer of barrier material wound with a layer of absorbent material and then sliced to provide a thin absorbent layer having high permeability in the thickness direction but low permeability in the plane due to the barrier material. In a second embodiment the absorbent Core consists out of an outer absorbent member having a central void, open toward the body side of the absorbent article a central absorbent member disposed over and extending into the open void and a wicking barrier disposed between the outer and central absorbent member. In a second embodiment the absorbent core consists out of an outer absorbent member having a central void, open toward the body side of the absorbent article a central absorbent member disposed over and extending into the open void and a wicking barrier disposed between the outer and central absorbent member.

La présente invention concerne un article absorbant comprenant un élément central absorbant et une barrière en tissu mèche entre les régions centrales de l'article et un élément absorbant à la périphérie. La barrière en tissu mèche comporte un élément vertical empêchant un effet de mèche de s'exercer radialement dans le plan de l'article et qui favorise donc le remplissage central de l'article par un fluide tout en réduisant les fuites au niveau des bords de l'article. La barrière en tissu mèche peut également comporter un élément vertical destiné à empêcher les fuites, détourner le flux de liquide et améliorer le confort et la fonctionnalité de l'article. Selon un mode de réalisation, l'élément absorbant central est constitué par une structure composée en alternance d'anneaux concentriques de matériau barrière et de matériau absorbant, dont un enroulement spirale composite fait d'une couche de matériau barrière entrelacé une couche de matériau absorbant, puis fendu, ce qui donne une couche absorbante mince à haute perméabilité dans le sens de l'épaisseur, mais à faible perméabilité dans le plan de l'article grâce à la présence du matériau écran.

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