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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.:

US 11241871 B1

PDFFull Text
Date of Patent:
Feb. 08, 2022

Filed:

May. 05, 2017

Laminated can end stock with elevated temperature annealing

Applicant:

Novelis Inc., Atlanta, GA (US);

Inventors:

Peter Spahn, Göttingen, DE;

Heinrich Prinzhorn, Göttingen, DE;

Nicolas C. Kamp, Uslar, DE;

Dhiren Bhupatlal Ruparelia, Göttingen, DE;

Assignee:

Novelis Inc., Atlanta, GA (US);

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Michael N Orlando

Assistant Examiner:

Joshel Rivera

Int. Cl.
CPC ...
B32B 41/00 (2006.01); B32B 37/10 (2006.01); B65D 17/28 (2006.01); B32B 37/04 (2006.01); B32B 7/08 (2019.01); B32B 27/36 (2006.01); B32B 7/12 (2006.01); B32B 27/18 (2006.01); B32B 37/00 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B65D 1/16 (2006.01); C22F 1/047 (2006.01); C23C 22/77 (2006.01); C23F 17/00 (2006.01);
U.S. Cl.
CPC ...
B32B 37/10 (2013.01); B32B 7/08 (2013.01); B32B 7/12 (2013.01); B32B 15/08 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/18 (2013.01); B32B 27/36 (2013.01); B32B 37/0053 (2013.01); B32B 37/04 (2013.01); B65D 1/165 (2013.01); B65D 17/4012 (2018.01); C22F 1/047 (2013.01); C23C 22/77 (2013.01); C23F 17/00 (2013.01); B32B 2307/518 (2013.01); B32B 2307/538 (2013.01); B32B 2307/714 (2013.01); B32B 2307/732 (2013.01); B32B 2309/02 (2013.01); B32B 2311/24 (2013.01); B32B 2367/00 (2013.01); B32B 2439/66 (2013.01); B32B 2439/70 (2013.01);
Abstract

Improved aluminum can end stock (CES) is disclosed. The CES includes a laminated, amorphous polymer coating exhibiting low feathering, low blushing, and high performance in an acetic acid test. The laminated metal strip can include the laminated polymer coating on an interior-facing side and a lacquered coating on an exterior-facing side. The CES is formed by performing an annealing process on the laminated metal strip, wherein the metal strip is raised to an annealing temperature above the melting point of the polymer for a sufficient duration to render the polymer amorphous. In some cases, the polymer film laminated to the metal strip is a Polyethylene terephthalate (PET) film.

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