The Procter & Gamble Company
Absorbent core having tube-shaped swelling chamber

Abstract:

An absorbent cores includes absorbent material enclosed a core wrap which comprises a liquid permeable substrate layer. The core contains from about 87% to about 100% of superabsorbent polymer and a tube-shaped swelling chamber having a length to width aspect ratio of less than or equal to about 5:1. The area of the core is at least twice the area of the swelling chamber, and the core contains a water responsive immobilizing agent to immobilize the superabsorbent polymer prior to water insult. The tube-shaped swelling chamber is a portion of the absorbent core containing superabsorbent polymer that is delimited by a plurality of continuous permanent seals that each join together overlapping portions of the core wrap and prevent superabsorbent polymer from moving across the seals.