Method and device for creating and transferring diffractive microstructures on a printable material

摘要

The method involves applying fluid to an embossing cylinder (14), and initially drying the fluid onto a printing material (2) in a region between an application point and a transfer point. Microstructures in the fluid are fixed, and solidified fluid is transferred to the printing material in form of a film. The fluid is act in the region between the application point of the fluid and the transfer point of the fluid to the printing material by using temperature-control or hardening radiation before contact with the printing material. A cover (18) is arranged on a periphery of a cylinder body. The cover is made of metallic material, nickel material, silicone, rubber or elastomer. The fluid is UV varnish, flexographic printing ink or offset printing ink. Independent claims are also included for the following: (1) a device for producing and transferring diffractive microstructures to a printing material (2) a web-fed or sheet-fed rotary printing press.