Patent ID: 7185780

Claim:
An overcap for sealing an opening of a container and reducing an amount of moisture within the container, the overcap comprising: a top portion having an outside surface and having an inside surface opposite the outside surface, wherein the top portion is structured and arranged to cover the opening of the container such that the inside surface faces an interior of the container; a connecting portion extending from the top portion of the overcap, wherein the connecting portion is structured and arranged to create a sealed interface with the container; and the top portion including a top layer that defines the outside surface of the top portion, a drying agent layer positioned below the top layer such that the drying agent layer is exposed to moisture within the interior of the container and is operable to absorb moisture from the interior of the container, and a moisture-permeable polymer layer, wherein the drying agent layer comprises a polymer material having a drying agent material dispersed therein and is positioned between the top layer and the moisture-permeable polymer layer such that moisture from the interior of the container must pass through the moisture-permeable polymer layer to reach the drying agent layer, wherein the drying agent layer and moisture-permeable polymer layer are coextruded.