Process and polymer blend composition for stretch wrap film

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion

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204165, 524110, 524111, 524310, 524312, 524317, 524394, 524488, 524487, 525210, 525222, C08J 518, C08J 710, C08L 2304, C08L 2320

Patent

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045044341

ABSTRACT:
A composition adapted for processing into stretch wrap film. The composition comprises between about 40 and about 90% by weight of a high molecular weight copolymer of ethylene and vinyl acetate containing between about 4 and about 25% by weight of repeating units derived from vinyl acetate and having a melt index of between about 0.1 and about 4.0. The composition further comprises between about 8 and about 55% by weight of a linear copolymer of ethylene and a higher alkene. Such linear copolymer has a specific gravity of between about 0.917 and about 0.945. The invention further includes stretch wrap film, a method of producing stretch wrap film of differential cling properties, and a composite film constituted of a layer of the aforesaid ethylene vinyl acetate copolymer and a layer of the linear copolymer of ethylene and a higher alkene.

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