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U.S. Patent No. 11,877,917
March 1, 2024
By: Tara Olivo
Associate Editor at Nonwovens Industry
Bruno Johannes Ehrnsperger, Bad Soden, Germany; Christine Elisabeth Zipf, Lauda-Königshofen, Germany; and Andrea Peri, Kronberg, Germany. Assigned to The Procter & Gamble Company, Cincinnati, OH. Filed: 2/25/21 Issued: 1/23/24 An absorbent article comprising a liquid permeable topsheet, a liquid impermeable backsheet, an absorbent core being disposed between the topsheet and the backsheet, wherein the absorbent core comprises: an absorbent material disposed in an absorbent deposition area and enclosed in a core wrap; and a swelling chamber disposed in between two external zones; wherein: the absorbent material comprises superabsorbent polymer; one or more permanent seals separate the chamber from each of the two external zones; the swelling chamber consists of absorbent material immobilized by water-responsive bonds, wherein said water-responsive bonds deteriorate upon exposure to water such that the absorbent material is flowable in the wet state; and the two external zones comprise absorbent material that is immobilized by thermoplastic adhesive, such that the absorbent material is immobilized in the wet state.
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