Better changeover times, waste reduction, ink savings, reduced washups, and higher quality printing. These are just some of the main advantages that expanded gamut (EG) printing system offers compared to direct color printing. Main key benefits that were showed during the technical day that Apex, Esko, Sun Chemical, Dupont, Cauchos Puntes and Comexi organized all together at Manel Xifra Boada Technological Center in March 2018.
A total of 10 experts from six different partner companies joined in a practical session that
consisted of printing a set of planned jobs in continuous simulating a work shift. All these jobs
were originally printed in spot colours but for this exercise they were converted into expanded
gamut (multicolour) colour separation. Previously the Comexi F2 MP was characterized under
agreed parameters of anilox, inks, plate and tape. The target of this exercise was to print in an
efficient way and under a fixed quality standards, monitoring step by step relevant specific data
in terms of job cost: changeover time, waste material and ink and solvent consumption.
Through these analyses and evaluations, technical specialists have been able to verify that the
expanded gamut system increases efficiency and achieves higher profitability and better quality
packaging than multicolor system. It offers solvent savings since EG printing only needs seven
colors and, therefore, there is no need for wash-up in between jobs. This printing system reduces
set-up times and enables to run more jobs, increasing machine uptime and capacity.
Besides, during the technical day, the experts confirmed that expanded gamut allows to run many shades of different colours at the same time, which results in a reduction of the number of changeovers per day, increasing even more the press up time.
Moreover, with this eco-friendly printing system it is no longer needed to use the press as ink proofer. By converting spot colous to a fixed ink set, colour matching is done during the prepress. Again, it reduces downtimes between jobs and increases productivity.
“Demand for shorter packaging production runs for targeted campaigns and product variations is increasing. Printers and converters need to meet these challenges in a time and cost-effective way and EG system is the proper way to achieve it," explains Comexi Technological Center mgr. Albert López.
More info: www.comexi.com