Absorbent cores and methods for forming absorbent cores
AssigneeKimberly-Clark Worldwide, Inc.
InventorMichael B. Venturino
Life of this patent
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Abstract
Pulpless absorbent cores and methods of manufacture are disclosed. A method of forming an absorbent core comprises moving a forming surface in a machine direction, creating a pressure differential across the forming surface, advancing a base carrier sheet on the forming surface in the machine direction, depositing a matrix of a first adhesive and a first quantity of superabsorbent material onto the base carrier sheet wherein the first adhesive and the first quantity of superabsorbent material mix prior to deposition onto the base carrier sheet, and applying a first quantity of cellulose fibers onto the deposited matrix of the first adhesive and the first quantity of superabsorbent material.
Claims11
A method of forming an absorbent core, the method comprising:
- moving a foraminous forming surface in a machine direction;
- creating a pressure differential across the foraminous forming surface;
- advancing a base carrier sheet on the foraminous forming surface in the machine direction;
- depositing a matrix of a first adhesive and a first quantity of superabsorbent material onto the base carrier sheet, the first quantity of superabsorbent material being dispensed from a superabsorbent material delivery conduit and the first adhesive comprising a fibrous adhesive dispensed from one or more application nozzles, the application nozzles located adjacent to the superabsorbent material delivery conduit at least partially in the machine direction and wherein the first adhesive and the first quantity of superabsorbent material mix prior to deposition onto the base carrier sheet;
- applying a first quantity of cellulose fibers onto the deposited matrix of the first adhesive and the first quantity of superabsorbent material;
- and
- wherein the first quantity of superabsorbent material is applied onto the base carrier sheet to have a first cross-machine direction maximum width, the first quantity of cellulose fibers are applied to the first adhesive and the first quantity of superabsorbent material to have a second cross-machine direction maximum width, and wherein the second cross-machine direction maximum width is different than the first cross-machine direction maximum width.
Dependencies are inferred from the claim text.