COEXTRUDED, POLYETHYLENE SKINS ON POLYPROPYLENE CORE

This disclosure provides compositions and methods for making a sealable film, which may include a sealant layer comprising a skin layer on an intermediate layer, wherein both skin and intermediate layers comprise one or more ethylene-co-α-olefins and a total thickness from 0.25 μm through 20 μm, wherein α-olefins polymerized with ethylene in the one or more ethylene-co-α-olefins comprise one or more C4-C10 α-olefins. Further, the sealable film may include a core layer having a first side and a second side, wherein the first side is at least proximate to the sealant layer, wherein the sealable film comprises a seal strength of at least 1100 g/25 inch at 120° C. In other example embodiments, the seal strength may exceed 1275 g/inch or even 3000 g/inch at 120° C. And in still other example embodiments, the sealable film may be laminated to a substrate.