Laser technology for putting codes on IML
Extra information on packaging such as use-by date, batch number for traceability or a unique competition code has generally been added up to now using inkjet printing. This is a procedure that is sometimes slower and might cause interruptions in the production process. There is now a laser technique for IML packaging that is much quicker and more efficient.
The packaging for Noosa Yoghurt, manufactured by Polytainers, is now made using this technique. Rather than printing on the packaging, the laser etches into the printing. The laser removes the paint and the ink revealing visible white text - the colour of the IML film. It is also possible to penetrate through the film with the laser so that the text appears in the colour of the polypropylene packaging.