Process for preparing superabsorbent-containing composites
AssigneeKimberly-Clark Worldwide, Inc.
InventorsWilliam G. Reeves, Emmanuelle C. Damay, Wendy L. Hamilton, Patsy A. Hansen, Jack N. Lindon, Heather A. Sorebo
Life of this patent
Estimating the term…
Abstract
Superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention contain at least one particle of a superabsorbent material covered with at least a first layer of at least one particle of at least one coating material. The superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention are particularly suitable for use in sanitary napkins, diapers and other disposable absorbent articles that handle complex fluids.
Claims42
A process for preparing a superabsorbent-containing composite, the process comprising the steps of:
- (a) introducing at least one particle of at least one coating material into a flowing gas stream, the flowing gas stream moving the coating material through a zone where an association agent is applied to the coating material;
- (b) introducing at least one particle of at least one superabsorbent material into the flowing gas stream;
- and
- (c) thereafter maintaining the flowing gas stream until the superabsorbent material is covered with at least a first layer of the coating material, the coating material being in intimate association with and covering the surface of the superabsorbent material.
A process for preparing a superabsorbent-containing composite, the process comprising the steps of:
- (a) introducing at least one particle of at least one superabsorbent material into a flowing gas stream, the flowing gas stream moving the superabsorbent material through a zone where an association agent is applied to the superabsorbent material;
- (b) introducing at least one particle of at least one coating material into the flowing gas stream;
- and
- (c) thereafter maintaining the flowing gas stream until the superabsorbent material is covered with at least a first layer of the coating material, the coating material being in intimate association with and covering the surface of the superabsorbent material.
A process for preparing a superabsorbent-containing composite, the process comprising the steps of:
- (a) introducing at least one particle of at least one superabsorbent material and at least one particle of at least one coating material into a flowing gas stream, the flowing gas stream moving the superabsorbent material and the coating material through a zone where an association agent is applied to the superabsorbent material and the coating material;
- and
- (b) thereafter maintaining the flowing gas stream until the superabsorbent material is covered with at least a first layer of the coating material, the coating material being in intimate association with and covering the surface of the superabsorbent material.
Dependencies are inferred from the claim text.