Dual layer thermal paper
Diagramm Halbach has a premium security paper for public transport at its disposal with its dual layer thermal paper (DLT). DLT paper is the first thermal paper that has been made resistant to hairspray, brake fluid and other similar substances. DLT paper has a double thermal coating: the first thermal coating generates the print image and the second provides a protective layer, preventing chemical erasure of the printed information and subsequent reprinting with new data.
DLT paper is also available with a neutral watermark and is the highest quality and most secure solution for mass transit tickets available at the moment. This paper can also be combined with hologram strips and other security features, of course.