Patent ID: 6517932
Filing Date: 2003-02-11
Classification: B32B,Y10T

Abstract:
A film composite for packaging purposes, effectively blocking the passage of water vapor and gases after sterilization in a water bath or in water vapor temperatures of more than 90Â° C., where the film composite has a barrier layer produced by vapor-deposition of inorganic materials, and wherein the film composite encompasses a film made from polyethylene terephthalate (PET) with a coextruded layer made from polyethylene 2,6-naphthalate (PEN) on at least one side, and has a ceramic layer of from 10 to 200 mm thickness on an outer surface of at least one of the sides coated with PEN, said ceramic layer being produced in a vacuum, where said ceramic layer is comprised of Al2O3 or SiOx, x being a number between 0.9 and 2.