Multilayer coextruded linear low density polyethylene stretch wrap films

A method for preparing a thermoplastic stretch wrap film capable of stretching upon exerting a force during application of the film to an article or group of articles to be wrapped comprising the step of:

• coextruding a film having at least three layers, said three layers having two outer layers and an intermediate layer positioned between said outer layers, said intermediate layer comprising a low melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, said low melt index linear low density copolymer having a melt index of between about 0.5 to about 2.5, and at least one of said two outer layers comprising a high melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, said high melt index linear low density copolymer having a melt index of at least 2.8, said high melt index linear low density copolymer containing from about 3.5 to about 15 weight percent n-hexane extractibles, wherein said n--hexane extractibles are present in an amount sufficient to cause the stretch wrap film so coextruded to exert a cling force when in surface-to surface contact with itself or another surface when used in the stretch overwrap packaging of articles.

A unitized plurality of goods comprising:

• a plurality of goods having a polyethylene stretch wrap film layer on about the girth of said goods in stretched condition, the end region of said film being attached to a previous layer of said film;
• said polyethylene stretch wrap film comprising at least three layers, said three layers having two outer layers and an intermediate layer positioned between said outer layers, said intermediate layer comprising a low melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms said low melt index linear low density copolymer having a melt index of between about 0.5 to about 2.5, and at least one of said two outer layers comprising a high melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, said high melt index linear low density copolymer having a melt index of at least 2.8, said high melt index linear low density copolymer containing from about 3.5 to about 15 weight percent n-hexane extractibles wherein said n-hexane extractibles are present in an amount sufficient to cause the stretch wrap film to exert a cling force when in surface-to-surface contact with itself.