PROCESS, PRINTING MATERIAL AND DEVICE FOR REPRODUCING HOLOGRAPHIC FINE STRUCTURES AND OTHER DIFFRACTION GRIDS ON PRINT PRODUCTS

摘要

The description relates to a process for the simultaneous replication and direct application of holograms and other diffraction grids on various printing materials (6), especially paper or cardboard. It is performed in the shaping process using a matrix bearing the hologram as a surface relief structure. One or more coats of lacquer (3, 7, 9) are applied to a printing material (6) with a substantially smooth surface and thus the surface of the printing material (6) is smoothed further. The hologram is simultaneously shaped into the surface of the coating applied to the printing material (6). The lacquer coating (3) can be hardened by radiation and the lacquer coats (3) are hardened from the matrix side through the u/v-tranparent matrix and through a matrix support (14) (a plate or cylinder) which is also u/v-transparent. The lacquer coat(s) (3, 7, 9) is/are essentially hardened before the printing material (6) is removed from the matrix and in contact with the matrix or the shaping cylinder.