Abstract: In one embodiment, the disclosure provides a film, which may be oriented, cast, or blown, that includes a core layer having a first side and a second side, wherein the core layer comprises hydrocarbon resin and polypropylene. Further, the film may include a first tie layer on the first side, wherein the first tie layer consists of polypropylene and about 5% or less of additives with exclusion of hydrocarbon resin (“HCR”), wherein the polypropylene is standard-crystalline polypropylene, high-crystalline polypropylene, or a mixture thereof, but preferably, it is a majority of high-crystalline polypropylene. Further still, the film may include a first skin layer on the first tie layer, and, also a coating on the first skin layer, wherein the coating comprises acrylic or acetate polymers or combinations thereof. The film maintains a minimum seal temperature of 300 g in?1 seal strength as compared to the film without any HCR.

Abstract: 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-?-olefins and a total thickness from 0.25 ?m through 20 ?m, wherein ?-olefins polymerized with ethylene in the one or more ethylene-co-?-olefins comprise one or more C4-C10 ?-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.