DIGITALLY IMAGEABLE FLEXO-PRINTING PLATE WITH INTEGRATED BARRIER LAYER

摘要

A digitally imageable, photopolymerizable flexographic printing element that includes, disposed one above another in order, at least a dimensionally stable support, at least one photopolymerizable, relief-forming layer having a layer thickness of 300-6000 μm, including at least one elastomeric binder, an ethylenically unsaturated monomer, and a photoinitiator or a photoinitiator system, an oxygen-blocking barrier layer which is transparent to UVA light and has a layer thickness of 0.3-5 μm, a laser-ablatable mask layer having a layer thickness of 0.3-5 μm, including at least one elastomeric binder and a material which absorbs UV/VIS light, and a removable outer film, wherein the at least one relief-forming layer, the barrier layer and the mask layer are soluble or dispersible in an organic solvent, and the barrier layer includes at least one oxygen-blocking binder and an oligomeric or polymeric basic adhesion component.