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
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Abstract
A method of making an absorbent structure is provided. The method contains the steps of placing a supporting sheet onto raised portions with a shape and dimensions corresponding to first and second channels, depositing absorbent material onto 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.
Claims20
A method of making 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 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 comprises a first channel disposed at least partially in the first side portion, and a second channel disposed at least partially in the second side portion, the channels being substantially free of the absorbent 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, the one or more adhesive materials comprising a hotmelt adhesive,
- 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.
The method according to claim 9, wherein the one or more adhesive materials of the absorbent structure comprises a second adhesive material present between the supporting sheet and the absorbent layer.
The method according to claim 10, wherein the second adhesive material is applied to the supporting sheet or part thereof prior to deposition of the absorbent layer or absorbent material thereof onto the supporting sheet.
A method of making an absorbent structure, the absorbent structure comprising:
- a first supporting sheet and an absorbent layer supported thereon, the absorbent layer comprising an absorbent material that comprises cellulosic 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 comprises a first channel disposed at least partially in the first side portion, and a second channel disposed at least partially in the second side portion, the channels being substantially free of the absorbent 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,
- wherein the method comprises:
- placing the first supporting sheet onto raised portions with a shape and dimensions corresponding to the first and second channels, such that the first supporting sheet is provided with raised portions and remaining portions;
- depositing the absorbent material onto the first supporting sheet, wherein the absorbent material does not remain on the raised portions of the first supporting sheet, but remains only on the remaining portions of the first supporting sheet;
- and
- applying a pressure to the first supporting sheet of the absorbent structure, the pressure being applied selectively to the portions of the first supporting sheet that correspond to the channels.
Dependencies are inferred from the claim text.