Controlled release active materials for oral products and methods of preparing the same

Abstract

A method for encapsulating an active material may include contacting an absorbing matrix material with a first solution to impregnate the absorbing matrix material with the first active material, where the first solution includes the first active material and a first solvent. The contacting may include at least one of soaking the absorbing matrix material in the first solution and spraying the absorbing matrix material with the first solution. The method may further include contacting the impregnated absorbing matrix material with a second solution that is the same as or different form the first solution. The second solution may include a second active material and a second solvent. The method may further include one or more drying steps to remove the first solvent and/or the second solvent.

Dependencies are inferred from the claim text.