Abstract: Multi-layer films particularly suited for packaging applications, including a core layer, a tie layer made from at least 10 wt % of a first polymer and a service layer, wherein the tie layer is a sealable layer and may provide a hermetic seal when sealed to itself. The films of this invention may be suitable for use in preparing hermetically sealed packages. Optionally, the multi-layer film may have a skin layer and/or a second skin layer. Embodiments may have the advantage of improved seal strength, hermeticity, hot tack, reduced-temperature sealability, and improved packaging machine operating speed.