Aluminum Company of America

David A Smith

John J Davidson

Thomas L Levendusky

John M Stinson

Roy B Steidley

Vincent J Downard

Susan A Stanton

Gary J DiFranco

John R McAllister

William F Forster

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.

Method for coating a metal strip

A hollow electrically conductive probe and method are provided for electrocoating a metal container. The probe is insertable into the container, which is preferably inverted, and electrocoating material is flowed through the probe to fill the container with a transient bath of electrocoating material. The probe includes a means for retarding the flow of the electrocoating material from the container interior by establishing an opposing flow of electrocoating material to increase the flow turbulence without creating discontinuities of flow in order to facilitate the electrocoating of corners and recesses near the container bottom. Preferably, peripheral openings about the probe body direct flowing electrocoating material toward the container bottom.

Electrocoating flow control electrode and method

A method and apparatus provided for applying an electrocoat on the interior and exterior of a metal container simultaneously. The interior and exterior of a metal container may be either uniformly or differentially coated. An electrically conductive probe including a nozzle is inserted into a metal container and an electrically conductive housing is enclosed around the container to seal the container therein and to form a continuous passageway from the probe-nozzle to the outer housing. As flowing electrocoating material floods the container in a transient bath, an electrical potential is simultaneously impressed between the container and the probe-nozzle to electrocoat the interior of the container, and between the container and the outer housing to electrocoat the exterior of the container.

Method and apparatus for differentially and simultaneously

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Murrysville, PA, United States of America

David A Smith