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UViGard™ EPX UV-cure Overprint Varnish (OPV)

Above: overprint varnish being applied with a sheetfed litho printing unit. UViGard UV-cured OPV's are applied using this method.

UViGard EPX is an epoxy acrylate-based coating designed to be used as a press-applied, screen-applied or roller-applied UV-curable coating with maximum hardness, chemical resistance and weather resistance. UViGard EPX can be reduced for flexo/tower applicators by using an appropriate combination of tri- or tetra-functional monomer and photoinitiator.

UViGard EPX will yellow slightly on curing. UViGard EPX requires the use of an absorbent substrate like paper or board stocks, a primer coat, or a surface treatment to increase surface energy on non-absorbent substrates (ie: metal, plastic) in order to ensure excellent adhesion.

UViGard EPX is produced ITX-free. 

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