Solution steps
A cost and CO2 calculator is to be developed, taking into account the usual work processes, which will enable a well-founded comparison between production operation with heatset dryers and with LED UV lamps. The data required for this is to be determined in the course of extensive research. In addition, papers are to be examined with regard to their suitability for the "low energy" process, both on a practical printing press and in the laboratory.
Achieved results
An Excel template was created with which a cost and CO2 comparison can be carried out for print productions specified by the user. The input parameters were defined in such a way that individual calculations are possible depending on the prevailing framework conditions. In the event that users do not have all the required information, default values were also specified.
The price of UV printing inks has a decisive influence on production costs. As it is significantly higher than for conventional heatset inks, heatset production is generally more favourable. The smaller the print run and the more frequent the job changes, the more attractive UV operation becomes. The reason for this is that the LEDs can be switched off during non-printing times.
In terms of CO2 consumption, on the other hand, UV printing has advantages across the board. These result from the fact that no gas and also less electricity is consumed than with heatset. In addition, according to print shops, paper can be saved when accelerating the printing press.