In our October 2018 blog, we showed some graphs that highlighted the activity in our system and in a competitor device. Our technology has a very even distribution of ultrasound, whereas the competition device showed an erratic distribution of sound. What this highlighted is that the fears in the industry (stoked up by competitors) is partially correct, although I doubt very much if these said competitors actually understood the process as to why damage to an anilox was possible, but it was a good sales tool with which to sell their poor performing, inefficient, high running costs and very environmentally un-friendly equipment (despite the claims to the contrary)
In today’s Flexo, most companies are looking to print higher quality and in that regard, the average screen count is now getting on for 1200lpi, with cell walls between 2 and 3µ. This is incredibly delicate and requires a very special device to clean both thoroughly and safely….but here’s a little tip that might help.
If you have an ultrasonic system there is a very easy way to see for yourself if it has the potential to damage your aniloxes.
Simply tear off a strip of kitchen foil and insert the sheet into your tank vertically for 20 seconds. If when you pull out the sheet, there are pin holes in the foil, the system has the potential to damage an anilox. If you have an Alphasound unit and conduct this trial, there will not be any holes in the foil, clearly showing that the sound is incredibly even and therefore safe for anilox cleaning.
The spikes of sound generated in a commercial grade system are in themselves only small, in the milli-volt range, but it is the incessant spiking every few seconds that will erode a cell wall over time. It could take months or even a few years, but if the spikes are there, they will punch holes in the tin foil, thus indicating the potential for roll damage.
This is a rudimentary way of checking the safety of your anilox cleaning device for roll cleaning.
For any readers in the US, please be advised that we now have an office in Richmond.
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