The lecture by Beatrix Genest (SID) dealt with the deinkability of UV-curing printing inks (IGF 20476). A project investigated the deinkability of UV prints and the fate of substances of health concern. The aim was to objectively assess the deinkability of UV printed products depending on the printing conditions, taking into account the ink, paper quality and ink curing. In the end, the deinking behaviour of UV inks could be compared with conventional sheetfed offset prints with and without UV coating. In phase one UV commercial prints were investigated. Of 38 print jobs provided by different printers, 28 were tested: 17 passed and eleven failed the deinkability test. The reason for failing was always dirt specks. When looking at the influencing factors, there was no effect of the paper quality. There were problems with some samples that were cured with a mercury lamp and with several samples that were treated with an iron-doped mercury lamp. All samples cured with UV-LEDs showed good results. In general, there was no correlation between curing level and deinkability score. To find out more about the correlation between printing conditions and deinkability, pilot tests were carried out on a CD 74 sheetfed offset press. Mercury lamps, iron-doped mercury lamps and UV LEDs for UV curing were used for these tests. Glossy and matt coated as well as uncoated substrates were printed with 16 different UV inks. The UV dosage, the pressure and the composition of the fount solution were varied for all 180 variants. Again, no significant correlation was found between UV ink curing and deinkability. Ultimately, the ink formulation and the ink application of the printed samples proved to be the main factors influencing deinkability. This means that for a general assessment of the deinkability of UV inks it is important to create a test form with defined ink application and to determine at least one paper quality, Beatrix Genest concluded. The rest of the programme included a presentation of the 4evergreen alliance by Susanne Haase, which has already won 60 members across the entire value chain of fibre-based packaging for its goals. Christian Aumüller (Aumüller Druck) and Volker Hotop (Frankfurter Societäts-Druckerei) reported from printing practice. Ulrich Leberle (CEPI) informed about the development of a European recyclability method for packaging and Laetitia Reynaud (Intergraf) about trends in the European market for printed products. Finally, the presentation by Hermann Onusseit (IVK) took up the banner for adhesive applications that would not necessarily make paper recycling more difficult.