Disposable diapers
AssigneeThe Procter & Gamble Company
InventorsCarsten Heinrich KREUZER, Rodrigo ROSATI, Blanca ARIZTI, Hans Adolf JACKELS, Ernesto Gabriel BIANCHI, Donald Carroll ROE
Life of this patent
Estimating the term…
Abstract
Disposable absorbent diapers are provided with improved comfort, fit and liquid transportation. The absorbent core of the disposable absorbent diapers includes at least one absorbent structure having a substrate layer and an absorbent layer with channels.
Claims18
A disposable diaper having a transverse and longitudinal dimension, the disposable diaper comprising a backsheet, a topsheet and an absorbent core disposed therebetween, wherein the absorbent core comprises a first absorbent structure,
- wherein the first absorbent structure has a wearer-facing surface and a garment-facing surface comprising a substrate layer and an absorbent layer comprising absorbent material, the absorbent layer comprising:
- i. transverse and longitudinal dimensions;
- ii. a pair of opposing longitudinal edges extending in the longitudinal dimension;
- iii. a pair of opposing transversal edges extending in the transverse dimension;
- and
- iv. front, crotch and back regions arranged sequentially in the longitudinal dimension;
- wherein the absorbent layer comprises a channel, the channel being substantially free of the absorbent material and extending through the thickness of the absorbent layer in the longitudinal dimension;
- and
- wherein the absorbent core comprises an acquisition system which is disposed between the topsheet and the wearer-facing surface of the absorbent structure, and wherein the acquisition system is in direct contact with the first absorbent structure such that the acquisition system at least partially fills in the channel of the first absorbent structure.
The disposable diaper of claim 8 wherein the substrate layer and second substrate layer are bonded via adhesive, heat bonding, ultrasonic bonding or combinations thereof.
A disposable diaper having a transverse and longitudinal dimension, the disposable diaper comprising a backsheet, a topsheet and an absorbent core disposed therebetween, wherein the absorbent core comprises a first absorbent structure and a second absorbent structure to form a laminate,
- wherein each of the first absorbent structure comprising a substrate layer and an absorbent layer, wherein the absorbent layer comprises absorbent material immobilized on the substrate layer, the absorbent layer comprising:
- i. transverse and longitudinal dimensions;
- ii. a pair of opposing longitudinal edges extending in the longitudinal dimension;
- iii. a pair of opposing transversal edges extending in the transverse dimension;
- iv. front, crotch and back regions arranged sequentially in the longitudinal dimension;
- and
- v. two longitudinal portions delimited by a plane having a dimension that is coextensive with a central longitudinal axis of the absorbent structure and a second dimension that is perpendicular to both the central longitudinal axis and a central transverse axis;
- wherein the absorbent layer comprises at least two channel portions, each channel portion being substantially free of the absorbent material and each channel portion extending through the thickness of the absorbent layer in the longitudinal dimension, wherein each longitudinal portion of the absorbent layer comprises at least one of the channel portions, and
- wherein the at least two channel portions are separated by a first distance in the crotch region and separated by a second distance in at least one of the front and back regions, and
- wherein the first distance is different from the second distance.
Dependencies are inferred from the claim text.