The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2008
Filed:
Nov. 25, 2003
Joseph D. Guthrie, Murrysville, PA (US);
Paul B. Schultz, Export, PA (US);
Thomas L. Levendusky, Greensburg, PA (US);
Bob Larsen, Knoxville, TN (US);
Joseph D. Guthrie, Murrysville, PA (US);
Paul B. Schultz, Export, PA (US);
Thomas L. Levendusky, Greensburg, PA (US);
Bob Larsen, Knoxville, TN (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
A process for making a metal-polymer composites suitable for shaping into container end panels having improved resistance to feathering and angel hair formation. A polymer coating is applied to a metal sheet. The polymer coating includes at least one cured polymer selected from polyolefins, anhydride modified polyolefins, epoxies, and phenoxies. The polymer coating on the composite is then irradiated with an electron beam, thereby scissioning chains in the cured polymer. The metal sheet preferably comprises an aluminum alloy and the polymer coating preferably comprises maleic anhydride modified polyropylene.