초록 ▼

Multilayer thermoplastic stretch wrap film having substantial one-sided cling properties is made without the use of polymers with high levels of n-hexane extractables, dissimilar polymer chemistries, or low molecular weight tackifiers. The reverse or cling layer comprises at least one homogeneously

Multilayer thermoplastic stretch wrap film having substantial one-sided cling properties is made without the use of polymers with high levels of n-hexane extractables, dissimilar polymer chemistries, or low molecular weight tackifiers. The reverse or cling layer comprises at least one homogeneously branched ethylene polymer composition having a density of about 0.90 g/cc or less and the obverse or non-cling layer comprises an propylene or ethylene polymer composition having a density greater than 0.90 g/cc. The multilayer film is particularly useful for load palletization end-use applications.

대표청구항 ▼

[ We claim:] [1.] A multilayer film having properties making it useful as a cling-wrap material comprising at least two layers wherein said layers comprise a reverse layer and an obverse layer,said reverse layer comprising at least one film-forming, inherent cling homogeneously branched very low den

[ We claim:] [1.] A multilayer film having properties making it useful as a cling-wrap material comprising at least two layers wherein said layers comprise a reverse layer and an obverse layer,said reverse layer comprising at least one film-forming, inherent cling homogeneously branched very low density linear ethylene polymer composition characterized as having(a) a density of about 0.90 g/cc or less,(b) a composition distribution branching index (CDBI), as determined using temperature rising elution fractionation, greater than 50 percent, and(c) a n-hexane solubility of at least 65 percent, based on the weight of the polymer composition, under extraction conditions defined in 21 CFR .sctn. 177.1520(c);and said obverse layer comprising at least one film-forming olefin polymer composition having a density greater than about 0.90 g/cc.