Method for coating a metal strip

US5407702A · kind A · utility

Assignee

• Aluminum Company of America · US

Inventors

• David A. Smith · Murrysville, US
• Susan A. Stanton · Evans City, US
• Gary J. DiFranco · Pittsburgh, US
• Roy B. Steidley · Henry's Drive, US
• John M. Stinson · Sheffield, US
• Thomas L. Levendusky · Greensburg, US
• Vincent J. Downard · New Kensington, US
• William F. Forster · Leechburg, US
• John R. McAllister · New Kensington, US

Key dates

• Filing date: May 5, 1993
• Grant date: Apr 18, 1995
• Expiry date: May 5, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2705/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method for extrusion coating both sides of a metal strip. A metal strip, such as aluminum alloy strip, is moved through a pre-conditioner, two extrusion dies, a post heater and a cooling system. Both sides of the strip are coated with thin coatings of polyester material. The coated metal strip is useful for containers, such as cans and can ends, as well as for automobiles, appliances, aerospace, construction and electrical devices.