Abstract: A polymer composition that includes a first polyolefin polymer and an interpenetrating network polymer. The interpenetrating network polymer includes a second polyolefin polymer present in an amount of from 10 percent by weight to 80 percent by weight, based on total weight of the interpenetrating network polymer, and a vinyl aromatic polymer present in an amount of from 20 percent by weight to 90 percent by weight, based on total weight of the interpenetrating network polymer. As initially provided in the polymer composition, the interpenetrating network polymer is substantially free of crosslinking. The polymer composition itself is at least partially crosslinked. An expandable polymer composition is provided that includes the polymer composition and an expansion agent, which can be expanded to form an expanded polymer composition that can have a density of from 16 to 400 Kg/m3.

Abstract: In accordance with the present invention, there is provided a food container assembly that includes a plurality of pre-packaged rigid containers, each containing an amount of food, that are vertically stacked within a tubular receptacle having oxygen (and optionally moisture) barrier properties. Each container (1) includes: (i) a bowl (11) having a closed bottom (14), an inner surface (17) defining a bowl interior (20), and an upper rim (23) defining an open top (26); (ii) a sleeve (29) having an outer surface (32) and a lower edge (35), and extending downwardly from upper rim (23) of bowl (11); (iii) an amount of food (44) residing within bowl interior (20); and (iv) a removable polymer film (47) sealingly engaging upper rim (23) of bowl (11), thereby sealing open top (26) of bowl (11) and containing food (44) within bowl interior (20). The plurality of containers (1) are arranged in a vertical stack (e.g., 2 or 3) having an outer edge (53).