Board printing in sheet-fed

• Basically the same problems as when printing paper

• Mottling

• tendency to wet repellence mottling might be greater because of higher amount of binder (more closed surface)

• Surface strength

• coating picking, carry-over piling occur• delamination, secret blowing

piling picking delamination secret blowingink layer

coating layertop plymiddle ply

reverse ply

Board printing in sheet-fed

• Varnishing

• most of the product are varnished• more post-press operations (cutting, creasing…) put stress

on the surface

• no rub-off or set-off problems because of varnish

• varnish and ink must be compatible