Method of manufacturing a composite superabsorbent core structure
AssigneeNordson Corporation
InventorsHubert Kufner, Ernst Hering
Life of this patent
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Abstract
Methods related to forming superabsorbent composite core structures using superabsorbent materials, such as superabsorbent polymers (SAP). In one method superabsorbent material is sprayed simultaneously with an adhesive to form a superabsorbent layer adhered to a first flexible sheet of material. A second flexible sheet of material is applied to the superabsorbent layer to position the superabsorbent layer between the first and second flexible sheets of material. At least one of the first or second flexible sheets of material is liquid permeable to allow liquid to penetrate into the superabsorbent layer from outside the composite product.
Claims10
A method of forming a composite superabsorbent core structure, comprising:
- spraying a first plurality of foamed adhesive filaments toward a first flexible sheet of material, the filaments having an average diameter;
- spraying particles of a superabsorbent particulate material toward the first flexible sheet of material, the particles having an average diameter greater than the average diameter of the filaments;
- mixing the filaments and the particles in an area spaced from the first flexible sheet of material such that the filaments partially coat the particles while leaving surface area portions of the particles uncoated;
- applying the partially coated particles and adhesive to the first flexible sheet of material to form a superabsorbent layer;
- and
- applying a second flexible sheet of material directly or indirectly to the superabsorbent layer to position the superabsorbent layer between the first and second flexible sheets of material, wherein at least one of the first or second flexible sheets of material is liquid permeable to allow liquid to penetrate into the superabsorbent layer, contact the uncoated surface area portions and become absorbed by the superabsorbent particulate material.
Dependencies are inferred from the claim text.