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US 4,367,256 AGranted
Cling-wrap polyethylene film
AssigneeUnion Carbide Corporation
InventorEdward N. Biel
Life of this patent
Estimating the term…
Abstract
A cling wrap plastic film comprising a mixture of high pressure-low density polyethylene (HPLDPE) and low pressure-low density polyethylene (LPLDPE), in which the LPLDPE is between about 5 and about 16 weight % of the LPLDPE plus HPLDPE total weight.
Claims21
A cling wrap plastic film comprising:
- a mixture of high pressure-low density polyethylene (HPLDPE), low pressure-low density polyethylene (LPLDPE), and a cling agent in amount between about 0.5 and about 2.5 wt.% of said film, wherein said HPLDPE has melt index between about 0.5 and about 7.0 gms/10 minutes and density less than about 0.932 gms/cm.sup.3, said LPLDPE has melt index between between about 0.5 and 4.0 gms/10 minutes and density less than about 0.932 gms/cm.sup.3, said LPLDPE is between about 5 and about 16 wt.% of the LPLDPE plus HPLDPE total weight for single layer films but between about 5 and about 13 wt.% of the LPLDPE plus HPLDPE total weight for multiple layer films, and the film thickness is between about 0.3 and about 1.5 mils.
Dependencies are inferred from the claim text.