The 60015820CV UV Tamper Proof Clear was developed to be printed on polycarbonate labels used in security applications. Labels are generally printed sub surface on transparent film. In the event of tampering or attempts to remove the label, labels printed with this clear will be destroyed. The 3400 Series UV Nameplate ink is recommended to use for graphics printing. The 3400 Series with the addition of 5% by weight NB80 Adhesion Promoter may be printed over HP Indigo digital offset prints. Refer to the 3400 Series Technical Data Sheet for processing information. The printer is responsible for testing print and ink combinations for satisfactory performance in the end use environment for a particular label.