Three-dimensional substrates

  • US 10,206,826 B2
  • Filed: 03/02/2015
  • Issued: 02/19/2019
  • Est. Priority Date: 03/06/2014
  • Status: Active Grant
First Claim
Patent Images

1. An absorbent article comprising:

  • a central longitudinal axis;

    a liquid permeable topsheet;

    a backsheet; and

    an absorbent core positioned at least partially intermediate the topsheet and the backsheet, wherein the absorbent core comprises an absorbent material comprising at least 90% superabsorbent polymers by weight of the absorbent material;

    the topsheet comprising;

    a first layer comprising a hydrophobic nonwoven material, wherein the hydrophobic nonwoven material overlaps the central longitudinal axis of the absorbent article; and

    a second layer comprising a hydrophilic nonwoven material, wherein the first layer is joined to the second layer;

    wherein the topsheet comprises a plurality of recesses, a plurality of dome-shaped projections forming a portion of a wearer-facing surface of the topsheet, and a plurality of land areas, wherein the land areas surround at least a majority of the plurality of dome-shaped projections and a plurality of the recesses, wherein the plurality of recesses, the plurality of dome-shaped projections, and the plurality of land areas, together form a first three-dimensional surface on a first side of the topsheet and a second three-dimensional surface on a second side of the topsheet, wherein a majority of the projections have a z-directional height in the range of about 500 μ

    m to about 4000 μ

    m, according to the Projection Height Test, wherein a majority of the recesses define an aperture at a location most distal from a top peak of an adjacent dome-shaped projection and defined at a lowermost plane of the topsheet, and wherein the majority of the recesses have a z-directional height in the range of about 500 μ

    m to about 2000 μ

    m, according to the Recess Height Test; and

    wherein the topsheet has an overall z-directional height in the range of about 1000 μ

    m to about 6000 μ

    m, according to the Overall Substrate Height Test.

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