Alcan Technology & Management Ltd.

Fabian Bonsch

Hans-Rudolf Nageli

Karolina Rosenberger

Juerg Frey

A process for manufacturing a flexible packaging material from a single or multi-layer film or film-type laminate containing a sealing layer of powder-type starting material deposited on at least one free surface of the film or film-type laminate. The sealing layer is deposited locally, i.e., over only those parts of the surface to be sealed, and the deposition of the sealing layer takes place by an electrostatic coating process in which coating particles are electrostatically charged and transferred to the film surface to be coated by applying an electric field, and melted and/or hardened to give a coating film in the form of a sealing layer.

Process for manufacturing a film-type packaging material

The invention relates to a process for manufacturing a flexible film-type laminate () from two or more films () for packaging materials, whereby at least two films () are laminated to each other to give a film-type laminate and the film or film-type laminate is printed on, and at least one free surface of the film-type laminate is provided with a sealing lacquer coating (). The invention is characterized in that the lamination (), the printing () and the coating () of the film or film-type laminate with a sealant lacquer take place in-line at individual coating stations () in a production device () using an electrostatic coating process in which coating particles are electrostatically charged and deposited on the film surface to be coated using transfer means by applying an electric field, and melted and/or cured to give a coating film.

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Neuhausen, Switzerland

Fabian Bonsch