Polyethylene Blends and Films
AssigneeExxonMobil Chemical Patents Inc.
InventorsChing-Tai LUE, Dongming LI, Hasnain RANGWALLA, Matthew F. YOTT
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Abstract
Provided herein are polyethylene films made of the polyethylene blends having improved properties, particularly in Elmendorf tear and puncture resistance. The polyethylene blends include two primary polyethylene blends.
Claims25
A film comprising a polyethylene blend, the polyethylene blend comprising two polyethylene compositions, each polyethylene composition having a density, wherein the density of each of the polyethylene compositions differs from the other in an amount between about 0.050 g/cm3 and about 0.060 g/cm3;
- and further wherein the film has (i) an average MD/TD 1% secant modulus greater than or equal to about 3300 psi and (ii) either (ii-a) a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or (ii-b) a heat seal initiation temperature at 1 N of less than or equal to about 95° C.
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A film having an average MD/TD 1% secant modulus greater than or equal to about 3300 psi, a heat seal initiation temperature at 5 N of less than or equal to about 95° C., and a hot tack seal initiation temperature at 1 N of less than or equal to about 95° C., the film comprising a polyethylene blend having a density between about 0.918 g/cm3 and about 0.922 g/cm3 and an MI (I2) between about 0.90 g/10 min and about 1.10 g/10 min, the polyethylene blend comprising two polyethylene compositions, each of the polyethylene compositions having a density between about 0.890 g/cm3 and about 0.960 g/cm3 and an MI (I2) between about 0.1 g/10 min and about 15.0 g/10 min, wherein the density of each of the polyethylene compositions differs from the other in an amount of about 0.055 g/cm3.
Dependencies are inferred from the claim text.