Method of incorporating fluid treatment agents into absorbent composites

This invention relates to method of incorporating a density modifier into an absorbent composite. The resulting absorbent composite is suitable for use in personal care absorbent articles, which are particularly adapted for absorbing various blood-containing bodily fluids, such as diapers and catamenial articles including sanitary napkins and pads, tampons, wound dressings, and the like. A method of incorporating a density modulator into an absorbent composite includes the steps of applying a density modulator solution to a pulp sheet, fiberizing the pulp sheet, and incorporating the fiberized pulp sheet into an absorbent composite. The density modulator can be applied by slot coating or by using a flooded nip. Once the density modulator is incorporated into the absorbent composite, the absorbent composite is highly wettable and, upon contact with blood-containing bodily fluids, undergoes a decrease in density, thereby increasing the absorbent capacity of the absorbent composite.