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US 11,911,250 B2Granted
Absorbent structure for absorbent articles
AssigneeThe Procter & Gamble Company
InventorsRodrigo Rosati, Carsten Heinrich Kreuzer, Hans Adolf Jackels, Blanca Arizti, Ernesto G Bianchi, Donald Carroll Roe
Life of this patent
Estimating the term…
Abstract
Absorbent structures for absorbent articles are provided. The absorbent structure includes an absorbent layer with absorbent material supported by a supporting sheet, and a channel that is free of the absorbent material. The channel has a wet integrity of at least 20%.
Claims19
A method of making an absorbent structure for an absorbent article, the absorbent structure comprising:
- a supporting sheet and an absorbent layer supported thereon, the absorbent layer comprising an absorbent material that comprises at least a superabsorbent polymer material;
- the absorbent structure and the absorbent layer having a longitudinal dimension and an average length, a transverse dimension and an average width, a height, and front, back and crotch regions arranged sequentially in the longitudinal dimension, the absorbent layer also having a longitudinal axis and perpendicular thereto a transverse axis;
- the absorbent layer having a first longitudinally extending side portion on one side of the longitudinal axis, and a second longitudinally extending side portion on the other side of the longitudinal axis;
- wherein the absorbent layer has at least a first channel present in the first side portion, and a second channel present in the second side portion, the channels being substantially free of the superabsorbent polymer material, and extending through the height of the absorbent layer;
- and
- wherein the absorbent structure comprises one or more adhesive materials to at least partially immobilize the absorbent layer onto the supporting sheet,
- wherein the method comprises:
- placing the supporting sheet onto raised portions with a shape and dimensions corresponding to the first and second channels, such that the supporting sheet is provided with raised portions and remaining portions;
- depositing the absorbent material onto the supporting sheet, wherein the absorbent material does not remain on the raised portions of the supporting sheet, but remains only on the remaining portions of the supporting sheet;
- and
- applying a pressure to the supporting sheet of the absorbent structure, the pressure being applied selectively to the portions of the supporting sheet that correspond to the channels, to thereby fold the supporting sheet into the channels.
8 more elements
A method of making a diaper comprising an absorbent structure, the absorbent structure comprising:
- a supporting sheet and an absorbent layer supported thereon, the absorbent layer comprising an absorbent material that comprises at least a superabsorbent polymer material;
- the absorbent structure and the absorbent layer having a longitudinal dimension and an average length, a transverse dimension and an average width, a height, and front, back and crotch regions arranged sequentially in the longitudinal dimension, the absorbent layer also having a longitudinal axis and perpendicular thereto a transverse axis;
- the absorbent layer having a first longitudinally extending side portion on one side of the longitudinal axis, and a second longitudinally extending side portion on the other side of the longitudinal axis;
- wherein the absorbent layer has at least a first channel present in the first longitudinally extending side portion, and a second channel present in the second longitudinally extending side portion, the channels being substantially free of the superabsorbent polymer material, and extending through the height of the absorbent layer, and
- wherein the absorbent structure comprises one or more adhesive materials to at least partially immobilize the absorbent layer onto the supporting sheet,
- wherein the method comprises:
- placing the supporting sheet onto raised portions with a shape and dimensions corresponding to the first and second channels, such that the supporting sheet is provided with raised portions and remaining portions;
- depositing the absorbent material onto the supporting sheet, wherein the absorbent material does not remain on the raised portions of the supporting sheet, but remains only on the remaining portions of the supporting sheet, wherein the absorbent layer of the absorbent structure has a pair of longitudinal side edges, a transverse front edge and a transverse back edge, and wherein the channels do not extend up to any of the edges;
- applying a pressure to the supporting sheet of the absorbent structure, the pressure being applied selectively to the portions of the supporting sheet that correspond to the channels, to thereby fold the supporting sheet into the channels, and
- assembling the absorbent structure into a diaper.
7 more elements
Dependencies are inferred from the claim text.