Roger Sigrist explains why ink absorption coatings are necessary and describes how they are designed.
Solvent-based inkjet inks were introduced for the printing of self-adhesive vinyl films and banners for the outdoor sector.
The composition of the inks allowed the polyvinyl chloride to swell, thus acting as a swellable coating.
For the first time, it was possible to produce weather resistant outdoor advertisements which were equal to traditional silk-screen printing.
The advantages of coating for solvent inks can be summarised as: