A film structure having an inner barrier layer comprised of a blend of a
polyamide and ethylene vinyl alcohol copolymer. The polyamide is present
in the blend in an amount of from 15-40%, and most preferably from
25-30%. The inner barrier layer is laminated on each side with a layer of
a polyamide. The preferred polyamide is nylon, and particularly nylon 6.
In a preferred embodiment, the film structure is layered with an oxide or
ceramic layer. Included is a method of manufacturing the film and for
using the film structure to package a product in a retort packaging
process.