Transfer Layer for Absorbent Article
AssigneeTredegar Film Products Corporation
InventorsRickey J. Seyler, Gregory M. Rieker, Andrew J. Peacock
Life of this patent
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Abstract
Three-dimensional formed films particularly useful as transfer layers in absorbent articles comprise a base plane having land areas defining a plurality of protuberances having sidewalls and a bottom wall, a plurality of the protuberances having an aperture in substantially at least one sidewall. In preferred embodiment, the film further comprises a plurality of capillaries, which can originate in the base plane or in a secondary plane spaced from the base plane. In preferred embodiments, the capillaries terminate in a common plane with the bottom surfaces of the protrusions.
Claims20
A three-dimensional formed film comprising protuberances, each protuberance having sidewalls and a bottom wall, the protuberances originating on a first surface of the film, the sidewalls being oriented nominally perpendicular to the first surface of the film and nominally parallel to a z-direction axis of the film, the bottom wall being disposed substantially perpendicular to the sidewalls, a plurality of the protuberances having an aperture in at least one sidewall, the aperture having an average cross-sectional area greater than 0.2 mm2 and an average hydraulic diameter between 0.55 mm and 1.2 mm;
- said three-dimensional film further comprising a first plurality of capillaries, said first plurality of capillaries having an average diameter of 50 microns to 400 microns, wherein the average length of the capillaries, as measured in a z-axis direction of the film, is substantially equal to or greater than an average length of the sidewalls.
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An absorbent article, comprising a topsheet;
- an transfer layer;
- an absorbent core;
- and a backsheet;
- wherein the transfer layer comprises a, the protuberances originating on a first surface of the film, the sidewalls being oriented nominally perpendicular to the first surface of the film and nominally parallel to a z-direction axis of the film, the bottom wall being disposed substantially perpendicular to the sidewalls, a plurality of the protuberances having an aperture in at least one sidewall, the aperture having an average cross-sectional area greater than 0.2 mm2 and an average hydraulic diameter between 0.55 mm and 1.2 mm;
- said three-dimensional film further comprising a first plurality of capillaries, said first plurality of capillaries having an average diameter of 50 microns to 400 microns, wherein the average length of the capillaries, as measured in a z-axis direction of the film, is substantially equal to or greater than an average length of the sidewalls.
Dependencies are inferred from the claim text.