A film is disclosed which comprises: (a) a first layer comprising at least 50 wt. % vinylidene chloride polymer based on the weight of the first layer; (b) a second layer comprising (i) at least 50 wt. % of one or more tie polymers selected from ethylene/vinyl acetate copolymer, ethylene(meth)acrylic acid copolymer, ethylene/C1-12 alkyl (meth)acrylate copolymer, and anhydride-modified polyolefin, based on the weight of the second layer; and (ii) at least 0.5 wt % of nanoparticles dispersed in one or more tie polymer of the second layer based on the weight of the second layer, the nanoparticles having an average size less than 100 nm in at least one direction; and (c) a third layer comprising one or more thermoplastic polymers, wherein the second layer is between and directly adhered to both the first and the third layer. The film provides an enhanced interlayer bond strength between the layers at the elevated temperatures associated with cook-in, retort, and/or pasteurization thermoprocessing. A packaged object comprising the film and method of processing a packaged food product are also disclosed.
展开▼
