Thermoformable multilayer moisture barrier and method of making the same

Abstract

A multilayer structure including, in order, a first passive moisture barrier layer, a second passive moisture barrier layer, a first active moisture barrier layer including a first moisture absorbing composition and a cyclic olefin copolymer, and a third passive moisture barrier layer. The first, second and third passive moisture barrier layers and the first active moisture barrier layer are contiguous, non-contiguous or combinations thereof. A method of forming a moisture absorbing multilayer structure including: a) forming a base structure including, in order, a first passive moisture barrier layer, a first active moisture barrier layer and a second passive moisture barrier layer, the first active moisture barrier layer having a first side and a second side opposite the first side and including a cyclic olefin copolymer, the first passive moisture barrier layer disposed on the first side, and the second passive moisture barrier layer disposed on the second side; and, b) coating a third passive moisture barrier layer on the base structure.

Dependencies are inferred from the claim text.