a three part laminated material for use in making blister packages and a method of making such a material . the material is comprised of a central core layer of poly chloro - tri - fluoro ethylene to each side of which a separate polymer film is adhesively attached . the method of making the material involoves use of a corona treater , a vertical forced air convection dryer , a horizontal convection dryer , a motor driven rewind , a chilled cylinder , a primary unwind and at least one laminating unwind . in the preferred embodiment , each of the polymer films is polyvinyl chloride , although a variety of different films may be used . the disclosed material provides a high moisture barrier , a stable inter - laminar structure and outer surfaces which lend themselves well to bonding with other materials .