The pharmaceutical industry typically relies on multiple layer structures made with PVdC
coatings or laminations made with Aclarฎ films. Coated and laminated films will typically utilize a base
film layer of PVC or polyester. The PVC and polyester films allow for successful processing on common
form-fill-seal equipment while the PVdC and Aclarฎ portions provide the barrier to diffusion. The
pharmaceutical industry commonly packages product with several types of barrier films offering varyinglevels of barrier for use in stability studies in order to determine the effectiveness of the package toprevent hydrolysis from occurring.