Zeller+Gmelin present the new generation of the low migration UVAFlex FCM Y81 series for printing on food packaging and labels. The low-migration UV-flexographic inks offer a high degree of migration safety and low-odour results.
The new ink system contains fewer substances that are critical to migration. The use of special multifunctional initiators with a comparatively high-molecular weight of approximately 1,000Da minimises the risk of migration. The molecular weight of conventional photoinitiators is several times lower (400Da or lower). For this reason, the new initiators feature a much lower potential for migration. In addition, the formulations contain polymerisable groups that participate in the curing and so are firmly incorporated in the chemical structure of the printing ink film (see right). This makes the FCM technology highly secure.
The formulation of the new ink series dispenses with BPAcontaining raw materials. The UVAFlex FCM Y81 colours meet the requirements of the Nestlé Guidance Note dated September 2016.
The series is universally applicable on paper and film. The printing ink series is state-of-the-art and provides excellent curing properties at low energy input. In production, it is characterised by homogeneous machine behaviour even at high printing speeds, providing excellent printability with a stable viscosity and very good flow properties, which leads to a significant reduction in the risk of ink spitting. The high colour strength allows a reduction of the cell volume of the anilox roller and so enables reduced ink consumption, and the high-quality printing of screens and solids with one plate.
UV Standard (left) and Zeller+Gmelin FCM technology (right).