Tetra Laval Holdings & Finance S.a.

Anna Harder

Paolo Scarabelli

Mats Qvarford

Mats Åkesson

Roy Eidebakken

Daniel Cederström

Keyvan Shourvarzi

An apparatus for digital printing of carton-based packaging material for packages holding liquid food products is provided. The packaging material has a first side adapted to form outer surfaces of the packages and a second side adapted to form inner surfaces of the packages. The apparatus includes an inlet configured to receive a web of the packaging material and an outlet configured to transfer the web of packaging material out of the apparatus, a web feeding assembly, arranged to feed the web in a web feeding direction from the inlet through the apparatus to the outlet, including at least one drive unit and at least one web direction device, a number of print bars provided with print heads arranged to provide food graded ink on the first side of the web, wherein the at least one drive unit and at least one web direction device provide a first web turning arrangement for turning the web after being received via the inlet such that the first side of the web is facing towards the print heads, and a second web turning arrangement for turning the web after the food graded ink has been provided by the print heads, wherein the first web turning arrangement provides a first slack upstream the number of print bars and the second web turning arrangement provides a second slack downstream the number of print bars.

Apparatus for digital printing of carton-based material and a method thereof

A method for printing a web of packaging material for packages holding liquid food products is provided. The method comprises receiving a web of packaging material, identifying a first register mark using a first sensor, determining a first register mark position based on the first register mark, determining a second register mark position area based on the first register mark position, identifying a second register mark within the second register mark position area using a second sensor and determining a second register mark position for the second register mark, determining a second area position of the second area based on the second register mark position, adjusting the web in relation to printer bars in accordance with the second area position, determining a second area position of the second area based on the second register mark position, and printing the second area by using the printer bars.

Method for printing a web of packaging material and an apparatus thereof

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Hjärup, Sweden

Anna Harder