LED curable ink system for multi colored sub-surface applications

摘要

A graphics display system is provided in which a graphics layer is printed upon a transparent substrate. An adhesive is generally applied over the graphics layer so that the graphics display system may be permanently affixed to a support. The graphics layer may be digitally printed upon the substrate using one or more UV-curable inks formulated to provide excellent adhesion to the substrate and resistance to degradation by the adhesive. The inks are capable of curing by UV radiation emitted from an LED array as opposed to conventional mercury vapor lamps.

主权项

1. A laminate graphics system comprising:
a relatively thin substrate comprising a synthetic resin material; a graphics layer printed upon said substrate with at least one UV curable ink and cured, said at least one UV curable ink prior to being cured comprising—
one or more acrylate oligomers said one or more acrylate oligomers comprising at least one oligomer having a glass transition temperature (“Tg”) in the range of −50° C. to 0° C. and at least one oligomer having a Tg in the range of 0° C. to 75° C.;one or more reactive diluents;one or more acrylate monomers, said one or more acrylate monomers comprising a multifunctional acrylate monomer;one or more photoinitiators; anda pigment; and an adhesive layer applied over said graphics layer, said graphics layer having greater adhesion to said substrate than to said adhesive layer.