Printing Inks-Offset

Ultrafine precipitated calcium carbonate can be used to control the rheology of offset printing inks systems. Their incorporation has a positive effect on the runnability of such inks and helps to reduce misting with high speed printing applications.

Inks containing Solvay PCC also have shorter grinding times through improving the dispersibility of difficult pigments by increasing the tack and inducing higher shear forces in the milling process.

The improvements to dispersion can also allow the reduction of costly coloured pigments without affecting the colour strength.

The less abrasive nature of precipitated calcium carbonate in comparison to naturally derived extenders also has a positive effect on plate wear that can be important for some computer to plate generated processes.

The coated ultrafine grades combine the above properties without significant effect on the gloss property that can often be important.

See also  Screen ink | Water based flexo | Other ink applications