Moisture control packaging materials

Abstract

Packaging materials are configured such that when sealed to define an interior volume of a package the packaging material has an inner surface facing the interior volume and an outer surface facing away from the interior volume. Between the inner surface and the outer surface, the packagings contain moisture controlling material. The permeability of moisture from the outer surface to the moisture controlling material is less than the permeability of moisture from the inner surface to the moisture controlling material to provide selective moisture transfer between the moisture controlling material and the interior volume of a sealed package formed, at least in part, from the packaging material. The nature of the packaging material and the moisture controlling material can be tuned to control the relative humidity within the sealed inner volume.

Dependencies are inferred from the claim text.