This phenomenon usually appears in some narrow web printing machines that work with UV inks. The viscosity of UV curing inks can cause the anilox to dose excess ink to the plate in an uncontrolled and random way (not always at the same location in the plate). It is usually visualized in printing especially in backgrounds or spot colors and is characterized as a kind of splashing sometimes followed by a line of more intense color, as can be seen in the image.
On these occasions the printer tries to solve it with machine adjustments, changing the doctor blade, modifying the printing speed, the hardness of the plate monting tape, etc. but in many cases it is impossible to eliminate the problem completely. In other cases it disappears with machine settings but reappears in another job and the same “recipe” that the machinist used now no longer works. It is a very annoying problem.
ASUV engraving: the solution
Ibeslab have developed the ANILOX ASUV type of engraving that provides a definitive solution to this problem of “Spitting” with a cell design that prevents ink splashes. The printer will be able to work at a higher speed on the machine, he will be able to forget about the “fine and impossible” adjustments with the doctor blades: frequent change, angulation, type of bevel, etc. and you can be more relaxed while monitoring the production.
Our experience with the combined supply of ibeslab doctor blades, Fujifilm inks, TESA adhesives and other consumables of the flexo group helps us to design comprehensive solutions that facilitate and improve printing.
Using the anilox ASUV, it increases the productivity of the printer, reduces waste and helps machine adjustments, it is compatible with any type of ink and flexo plate.
We can refurbishment any anilox cylinder applying our anti spitting technology with the same lines per centimeters and volume that currently causes problems.
Give it a try!