Absorbent core comprising a high loft central layer and superabsorbent particles
AssigneeThe Procter & Gamble Company
InventorsJuliane NMN KAMPHUS, Andrea PERI, Simone NMN SEEBOTH
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Abstract
An absorbent core (28) for use in an absorbent article (20) having a high loft central layer (43) between a top layer and a bottom layer and superabsorbent particles (SAP) at least partially distributed within the high loft layer. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (SAP T20) of less than 220 s, and/or the absorbent core has a time to reach an uptake of 15 g/g (Core T15) of less than 200 s, and/or the absorbent core has a permeability (core K20) of more than 6.0×10−8 cm2. These properties are measured according to the K(t) Test Method as described in the application.
Claims21
An absorbent core for use in an absorbent article, the absorbent core extending in a transversal direction and a longitudinal direction and having a thickness in a vertical direction perpendicular to the transversal direction and longitudinal direction, the absorbent core comprising:
- a liquid-permeable top layer;
- a bottom layer;
- a high loft central layer between the top layer and the bottom layer;
- superabsorbent polymer particles between the top layer and the bottom layer, wherein the superabsorbent polymer particles are at least partially distributed within the central layer;
- and
- wherein the superabsorbent polymer particles have a time to reach an uptake of about 20 g/g (SAP T20) of less than about 220 s, as measured according to the SAP K(t) Test Method as described herein.
An absorbent core for use in an absorbent article, the absorbent core extending in a transversal direction and a longitudinal direction and having a thickness in a vertical direction perpendicular to the transversal direction and longitudinal direction, the absorbent core comprising:
- a liquid-permeable top layer;
- a bottom layer;
- a high loft central layer between the top layer and the bottom layer;
- superabsorbent polymer particles between the top layer and the bottom layer, wherein the superabsorbent polymer particles are at least partially distributed within the central layer;
- and
- wherein the absorbent core has a time to reach an uptake of about 15 g/g (Core T15) of less than about 200 s, as measured according to the Absorbent Core K(t) Test Method as described herein.
An absorbent core for use in an absorbent article, the absorbent core extending in a transversal direction and a longitudinal direction and having a thickness in a vertical direction perpendicular to the transversal direction and longitudinal direction, the absorbent core comprising:
- a liquid-permeable top layer;
- a bottom layer;
- a high loft central layer between the top layer and the bottom layer;
- superabsorbent polymer particles between the top layer and the bottom layer, wherein the superabsorbent polymer particles are at least partially distributed within the central layer;
- and
- wherein the absorbent core has a permeability (Core K20) of more than about 6.0×10−8 cm2, as measured according to Absorbent Core K(t) Test Method as described herein.
A method for making an absorbent core, the method comprising the steps of:
- providing a high loft central layer, a liquid-permeable top layer, and a bottom layer;
- depositing a first layer of superabsorbent particles on a first side of the high loft central layer;
- laminating the first side of the central layer with one selected from the liquid-permeable top layer and the bottom layer;
- optionally depositing a second layer of superabsorbent particles on the second side of the high loft central layer;
- laminating the second side of the central layer with the other of the liquid-permeable top layer or the bottom layer that was not laminated previously;
- wherein the superabsorbent polymer particles deposited have a time to reach an uptake of about 20 g/g (SAP T20) of less than about 220 s, as measured according to the SAP K(t) Test Method as described herein.
Dependencies are inferred from the claim text.