Tetra Pak intaglio is an experimental version of the traditional drypoint etching or intaglio printmaking technique. In the traditional version, an etching needle is used to engrave an image into a metal plate, that will then be inked and used to print the design.
The Tetra Pak intaglio technique replaces the metal plate with a piece Tetra Pak™, such as those used for milk, juice or soup packaging. This material consists of several layers—the cardboard is coated with thin metal film and a layer of plastic—and the image is engraved onto the metal side of the plate.