How to choose the pigment used in the production of water-based ink?

When producing water-based inks, it is very important to choose the right pigment. Generally speaking, pigment suppliers will provide several pigments with different properties to choose . Ink manufacturers can choose suitable pigments according to actual needs. In addition to cost considerations, factors such as weather resistance, gloss, compatibility, ease of dispersion need to be considered.

1. Choice of opaque pigments

Opaque pigments can often provide good hiding performance, can be widely used in printing cartons, corrugated paper, label paper. Cartons that require multi-layer printing mostly use water-based inks made of opaque pigments opaque pigments. For example, the particles are larger, they are easier to disperse, they have better lightfastness. Opaque pigments are also used when printing outdoors when lightfastness is required.

2. Selection of transparent pigments

When printing high quality, have higher requirements for printing effects such as transparency gloss, you can choose transparent pigments. Transparent pigments have good gloss, printing strength, dyeing strength, transparent pigment particles are generally better than opaque pigments. The particle medicine is small, so the transparent pigment is generally more suitable for the scenes with higher gloss requirements.

The choice of pigments of various colors will directly affect the quality of the final finished ink. In water-based ink systems, the use of high resin pigments is likely to cause instability, mainly because of the resin added in the manufacturing process the acrylic acid in the ink grinding formulation Due to the incompatibility of the resin, if the pigment has good stability, there will be no change in hue chromatic aberration when it encounters water dehydration.