An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

Provided is an electronic waybill, which relates to the technical field of logistics. The electronic waybill includes a base layer and a surface layer, where the surface layer is disposed on a side of the base layer, the base layer and the surface layer collectively constitute an information-bearing surface configured to bear waybill information, and after the surface layer is removed from the base layer, part of the waybill information is retained on the base layer and the other part of the waybill information is retained on the surface layer.