Patent · US Active

Systems and methods for laminating can end stock

US11826985B2 · kind B2 · utility

0Cited by

10References

15Claims

0Family size

Assignee

Novelis Inc. · US

Inventors

Peter Spahn · Darmstadt, DE
Christian Tussing · Göttingen, DE
Michael Heinemann · Lage, DE
Dhiren Bhupatlal Ruparelia · Göttingen, DE
Joerg Hoehne · Oettingen, DE

Key dates

Filing date	Dec 20, 2019
Grant date	Nov 28, 2023
Priority date	—
Expiry date	Jan 19, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C22/05
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Improved aluminum can end stock (CES) is disclosed. The CES includes an adhered polymer coating exhibiting low feathering and high performance in various acid tests. The low feathering and resistance to acid tests is accomplished by incorporating a copolymer adhesion promoter film to an aluminum alloy before lamination. In some cases, the metal strip is pretreated with a conversion layer, which can include compounds of trivalent chromium (Cr(III)) and phosphates or titanium and zirconium.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.