How to gain optimal print results when using metal effect inks?
Rolf Montag, Product Manager Business Unit Narrow Web at Siegwerk, recently shared some interesting insights by answering essential questions, like whether and to what extent the specifications of metallic inks can cause frequently occurring printing problems
You are looking for some useful information how to optimize metallic effects for your next print job? Rolf Montag, Product Manager Business Unit Narrow Web at Siegwerk, is one of the company’s ink experts and knows about the special properties and the differences between all kinds of metallic inks.
He recently shared some interesting insights by answering essential questions, like whether and to what extent the specifications of metallic inks can cause frequently occurring printing problems and how the different characteristics of metal effect inks can affect the final printing result.
Due to an increasing competition for consumer awareness at the point-of-sale, brand owners desire to develop interesting and attractive packaging and label designs. They like to use special print effects to create an outstanding appearance of their products when competing with others in the supermarket shelves. Metallic inks are one frequently used example for creating attention attracting effects on printing substrates. There are UV, solvent- and water-based metallic inks available on the market which are all based on conventional inks enriched with metallic pigments.
Are there any distinctions between the different kinds of metallic inks that users need to keep in mind in order to successfully print them?
“Indeed, printing UV metallic inks is more difficult than using solvent- or water-based ones. It can sometimes lead to a non-satisfactory print result. Like other inks, UV metallic inks are made of a dispersion of brass or aluminum particles in a liquid medium and, on the face of it, there is nothing about them to reveal why they should be harder to print,” explains Rolf Montag. “There are a number of important differences that do make UV metallic inks harder to print.”
As one of the leading providers of printing inks for packaging applications and labels, Siegwerk offers a wide range of metallic ink series suitable for all kinds of print technologies and applications.
For flexo printing, the company offers for example a high-quality UV metallic ink series for standard label applications (SICURA Flex Metal) as well as low migration UV metallic inks for label applications for food, pharma or hygiene packaging (SICURA Nutriflex Metal). For label applications using rotary and flat-bed silk screen printing presses, SICURA Screen Metal contains brilliant UV metallic inks with good coverage. Furthermore, Siegwerk’s portfolio also contains offset UV ink series designed for the production of metallic shades like SICURA Litho Metal for offset, dry offset or typo printing and SICURA Litho Nutrimetal, free radical low migration UV inks suitable for food packaging applications in offset or letterpress printing.