Hot water/superheated stem-resistant EVOH barrier films
AssigneeAtochem
InventorsRichard Audry, Pierre Nogues
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Abstract
Hot water and superheated steam resistant barrier films, well adopted as packaging materials, e.g., for perishable comestibles, notably foodstuffs, at least in part include at least one layer of a polymer alloy comprising (a) at least one ethylene-vinyl alcohol (EVOH) copolymer, (b) at least one polypropylene and (c) a compatibilizing amount of at least one compatibilizing agent therefor.
Claims6
A multilayer film comprising at least one hot water and superheated steam resistant film member formed from a polymer alloy comprising (a) an oxygen-barrier effective amount of at least one ethylene-vinyl alcohol copolymer, (b) a water vapor-barrier effective amount of at least one polypropylene and (c) a compatibilizing amount of at least one compatibilizing agent therefor, wherein said compatibilizing agent comprises a graft copolymer based on an .alpha.-monoolefin.
A perishable comestible sealedly packaged within a hot water and superheated steam resistant film member formed from a polymer alloy comprising (a) an oxygen-barrier effective amount of at least one ethylene-vinyl alcohol copolymer, (b) a water vapor-barrier effective amount of at least one polypropylene and (c) a compatibilizing amount of at least one compatibilizing agent therefor, wherein said compatibilizing agent comprises a graft copolymer based on an .alpha.-monoolefin.
Dependencies are inferred from the claim text.