Germany-based Siegwerk has developed a new range of electron beam (EB) curing offset printing inks, which is suitable for plastic substrates in the flexible packaging market.
Using the new ink, flexible packaging printers will receive the benefits of offset printing for short print job lengths.
Flexible packaging printers will benefit from low print form costs and shorter set-up times to facilitate changeovers between print jobs.
Developed in compliance with necessary product safety standards of Swiss Ordinance, Siegwerk’s new ink includes ingredients that will also comply with the upcoming German Ordinance.
Siegwerk EMEA application technology, flexible packaging regional director Dr Stefan Busse said: “In the past, typical print run lengths for example in beverage wrap-around labels were several tens of thousands of square metres.
“Today, more and more jobs are printed on wide web machines with only a few thousand square metres.
“In order to stay cost-competitive in these markets, all cost drivers have to be minimised. That’s why some of our customers are attracted by the low cost of print forms for offset printing plates.”
The company also noted that converters not wishing to use photo initiators in energy-curing inks can use EB curing systems to reduce the risk of potential migration problems.
Siegwerk’s new offset printing ink was industrially trialled on Comexi’s CI8 central impression EB offset press, resulting low dot gain, low water dosing with less emulsification and scumming, and fast intensity recovery after stops.
Image: Siegwerk creates new EB curing ink for offset printing. Photo: courtesy of Siegwerk.