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US 2014/0276515 A1Published application
Structured fibrous web
AssigneeThe Procter & Gamble Company
InventorsEric Bryan BOND, Carola Elke Beatrice KRIPPNER, John Brian STRUBE
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Abstract
The present disclosure is directed to disposable absorbent articles comprising a structured fibrous web, the structured fibrous web comprising thermally stable, hydrophilic fibers that are thermally bonded together using heat producing a base substrate that is thermally stable. The base substrate is textured via mechanical treatment to increase its thickness and optionally modified via over bonding to improve its mechanical and fluid handling properties. The structured fibrous web provides optimal fluid wicking and fluid acquisition capabilities and is directed toward fluid management applications.
Claims31
A disposable absorbent article comprising:
- a topsheet;
- a backsheet;
- an absorbent core located between the topsheet and the backsheet;
- and
- an acquisition system located between the topsheet and the absorbent core, wherein the acquisition system comprises a structured fibrous web comprising thermoplastic fibers having a modulus of at least about 2.0 GPa forming a fibrous web that is thermally stable, wherein the thermoplastic fibers have a melting temperature above 130° C., wherein the thermoplastic fibers have a glass transition temperature above −10° C., wherein the structured fibrous web comprises a first surface and a second surface, a first region and a plurality of discrete second regions disposed throughout the first region, wherein the second regions form discontinuities on the second surface and displaced fibers on the first surface, wherein at least about 50% and less than about 100% of the displaced fibers in each second region are fixed along a first side of the second region and separated proximate to the first surface along a second side of the second region opposite the first side forming loose ends extending away from the first surface, and wherein the displaced fibers forming loose ends provide access to void volume inside the discontinuities for collecting fluid.
2 more elements
A disposable absorbent article comprising:
- a topsheet;
- a backsheet;
- an absorbent core located between the topsheet and the backsheet;
- and
- an acquisition system located between the topsheet and the absorbent core, wherein the acquisition system comprises a structured fibrous web comprising non-extensible thermoplastic fibers having a modulus of at least about 0.5 GPa, wherein the thermoplastic fibers have a melting temperature above 110° C., wherein the thermoplastic fibers have a glass transition temperature of above −10° C., wherein the structured fibrous web is formed from a base substrate, wherein the base substrate is fully bonded, wherein the base substrate is thermally stable, wherein the structured fibrous web comprises a first surface and a second surface, a first region and a plurality of discrete second regions disposed throughout the first region, wherein the second regions form discontinuities on the second surface and displaced fibers on the first surface, wherein the displaced fibers forming loose ends provide access to void volume inside the discontinuities for collecting fluid, wherein the structured fibrous web comprises a plurality of overbonded regions disposed throughout the first region, wherein in each of the overbonded regions of the structured fibrous web, the first region and the second regions have an aged caliper, and wherein the aged caliper of the second regions formed by the loose ends of the displaced fibers is less than about 1.5 mm, which is greater than the aged caliper of the first region.
2 more elements
A disposable absorbent article comprising:
- a topsheet;
- a backsheet;
- an absorbent core located between the topsheet and the backsheet;
- and
- an acquisition system located between the topsheet and the absorbent core, wherein the acquisition system comprises a structured fibrous web comprising thermoplastic fibers having a modulus of at least about 2.0 GPa forming a fibrous web that is thermally stable, wherein the thermoplastic fibers have a melting temperature above 110° C., wherein the thermoplastic fibers have a glass transition temperature above 0° C., wherein the structured fibrous web comprises a first surface and a second surface, a first region and a plurality of discrete second regions disposed throughout the first region, wherein the second regions form discontinuities on the second surface and displaced fibers on the first surface, wherein at least some of the displaced fibers in each second region are fixed along a first side of the second region and separated proximate to the first surface along a second side of the second region opposite the first side forming loose ends extending away from the first surface.
2 more elements
Dependencies are inferred from the claim text.