Ink Q&A (1)

Shengxian Export Commodity Carton Factory Question:

Water-based ink printing poster paper carton (good paper smooth, less pores), why will happen due to less ink to produce a sheet of paper ink roll open, is the ink quality is not good or to choose special ink? (Mainly due to the slow drying speed causing the roll to open)

Sheet-rolling is mainly due to the inconsistent drying speed of the paper in all directions when printing water-based ink on a specific substrate (eg, soft and thin paper, small paper area, and too much or too small ink absorption of the paper). , can be adjusted through the ink, Gao's company can provide such water-based anti-curly ink.

The use of water-based ink precipitation and ink does not appear bright, is not the quality of the selected ink?

Water-based ink precipitation occurs, but after stirring, the precipitate disappears and the ink becomes uniform without affecting the print quality because:

The ink is too thin and easy to delaminate.

The viscosity of the ink is not low, but its specific gravity is large. It may contain more fillers. The specific gravity of the filler is usually greater than that of the ink, and it is easy to sink. Therefore, stirring should be performed before use.

However, if the water-based ink is still not uniform after stirring, the precipitate cannot completely disappear. This is because the water-based ink is stored for too long, the quality is deteriorated, or the choice of the pigment and the resin does not match.

Water-based inks are not brightly colored because:

Poor choice of pigments;

Resin and pigment do not match;

Add excess additives;

The ink was stored for too long and the quality deteriorated. Mr. Sun Zhiyong, Technical Department of Ink Printing Division, would like to thank you.