| 摘要 |
Methods of preparing a dentifrice comprising polymer matrix film with menthol therein are disclosed. The methods comprise combining a polymer matrix film that comprises hydrophobic additives and is free of a low solubility flavorant such as menthol with a dentifrice base comprising a low solubility flavorant such as menthol and maintaining the combined polymer matrix film with the dentifrice base comprising low solubility flavorant for an amount of time sufficient for an amount of a low solubility flavorant to transfer from the dentifrice base comprising low solubility flavorant to the polymer matrix film and establish an equilibrium of menthol concentration between the polymer matrix film and the dentifrice base. Products comprising low solubility flavorant-free polymer matrix film in a dentifrice base comprising low solubility flavorant are also disclosed. |
