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US 4,379,197 AGranted
Stretch wrap film composition
AssigneeEl Paso Polyolefins Company
InventorsCipriano Cipriani, Henry J. Boyd
Life of this patent
Estimating the term…
Abstract
Films especially useful for the stretch wrapping of pallet loads are prepared from compositions consisting essentially of a linear low density polyethylene resin free of any polymerized vinyl acetate groups and from about 0.3 to about 3.0 wt % sorbitan monooleate based on the weight of the resin.
Claims10
A stretch wrap film composition consisting essentially of
- (a) a linear low density polyethylene resin free of any polymerized vinyl acetate groups said resin being a copolymer of ethylene with one or more comonomers selected from C.sub.4 to C.sub.10 alpha-olefins and having a density in the range of from about 0.900 to about 0.940 g/cc and a melt index between about 0.1 and 10 g/10 min. and
- (b) from about 0.3 to about 3.0 weight percent sorbitan monooleate based on the weight of the resin,
- said composition in film form having excellent cling properties without exhibiting excessive adherence to film processing equipment.
A stretch wrap film having excellent cling properties without exhibiting excessive adherence to film processing equipment and having been prepared from a composition consisting essentially of
- (a) a linear low density polyethylene resin free of any polymerized vinyl acetate groups said resin being a copolymer of ethylene with one or more comonomers selected from C.sub.4 to C.sub.10 alpha-olefins and having a density in the range of from about 0.900 to about 0.940 g/cc and a melt index between about 0.1 and 10 g/10 min. and
- (b) from about 0.3 to about 3.0 weight percent sorbitan monooleate based on the weight of the resin.
Dependencies are inferred from the claim text.