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US 5,350,476 AGranted
Extrusion coating process for producing a high gloss polyethylene coating
AssigneeEastman Chemical Company
InventorRay Edwards
Life of this patent
Estimating the term…
Abstract
A process of producing a high gloss oxidizable extrusion coated polyethylene is provided. This process entails extrusion coating a low density polyethylene of narrow molecular weight distribution having a low melt index, a low swell ratio, and a polydispersity index below 9.
Claims11
An extrusion coating process comprising;
- extrusion coating onto a substrate against a glossy chill roll, a low density polyethylene of narrow molecular weight distribution having a melt index of 2 to 4-dg/min at 190.degree. C., a swell ratio of 1.2 to 1.3, an annealed density of 0.92 to 0.93-g/cc, and a polydispersity index of 6 to 9.
Dependencies are inferred from the claim text.