involves surface relief on a polymer plate i.e. something like a rubber stamp. It is usually a high volume process (24", 300 ft./min) but resolution is limited and there is rigidity of the plate and an Anilox roller to cope with.
Because flexographic printing applies the medium using a raised pattern that is flexible it is somewhat tolerant of surfaces that are not level. Poly IC
use it for reel to reel pilot manufacture of polymer flexible transistor