Flexo printing is a complex process. It is not entirely a new concept either, given that the Gothenburg press was invented all those centuries ago. But the fact of the matter is that flexo printing is advanced. You only need to look at the variety of materials you now have at your disposal. There is no uniform set of lines and prints. You are able to retain your rate of stimulation, not just in words but in visuals as well.
The use of doctor blades for flexo printing is simply non-negotiable. Flexo printing simply cannot operate without its blades. You must just remember that the blades contribute towards the reproduction of literally hundreds of different fonts and colors and textures. It is an efficient system that allows for expensive ink to be used as resourcefully as possible. An extremely experienced printing journeyman would be the best person to talk to in attempting to understand why those in the printing trade still have a preference for stainless steel blades.
But as new technologies are slowly but surely making its way into the printing press process, doctor blades made from plastic are being introduced cautiously. The motivation was that apart from its obvious safety factor, it would also be more cost-effective to use. But given the intensity and rate at which the printing press must operate, the risk is always there that such blades could break quite easily.
And that certainly would not have been sustainable in the printing line. While digital technologies, software based programs and even the use of robotics or artificial intelligence continue to be added in dribs and drabs to the printing press, challenges remain for now. Because all these wonderful technologies have yet to master the work that doctor blades can perform.