How to select water-based acrylic resin for water-based ink?

First of all, water-based acrylic resin has the following performance in ink:

1. As a film-forming material of water-based ink, it can stick the pigment on the surface of the substrate.

2. It can make the ink have sufficient leveling, spreading and smooth gloss on the surface of the substrate.

3. The water-based acrylic resin used in water-based inks is an efficient wetting agent and abrasive.

4.  It can provide the dispersion performance and printability of the coating.

5. The water-based acrylic resin used in water-based ink can increase the printing and resolubilization performance of the coating.

>>>So how do we choose the right water-based acrylic resin?

In industrial manufacturing, we should look at it from the perspective of dispersion. The water-based acrylic resin used in water-based inks should first have the best dissolved state,

which is conducive to dispersing the functional groups of the resin, thereby adsorbing on the surface of the pigment particles and forming a thick protective layer. The prepared water-based ink has sufficient leveling and spreading power, and is convenient to form a uniform ink film.

Secondly, the solid content and viscosity of the water-based acrylic resin used in water-based inks should be controlled, because the size of the solid content affects the fast-drying and gloss brightness of the resin. The larger the solid content, the higher the gloss of the resin and the fast-drying. It is also good; and the viscosity of the water-based acrylic resin used in water-based ink reflects the relative molecular weight of the resin and the size of the interaction between molecular chains to a certain extent, so the relative molecular weight of the water-based acrylic resin used in water-based ink also affects The pigment dispersibility and water solubility of the resin. If the molecular weight is large, the viscosity of the water-based acrylic resin used in the water-based ink will increase, so that the pigment is not easy to disperse in it, and due to the relatively long molecular chain, the water solubility will be relatively poor.

Therefore, the ink and varnish should try to use water-based acrylic resin for high-solids and low-viscosity inks. Its low viscosity can not only disperse and wet the pigments well, but also contain high solid content. It can make the product have a high gloss, reduce the evaporation of water, and to ensure the quality of the water-based acrylic resin used in the water-based ink, it is also necessary to ensure that the resin has a higher light transmittance, so as to ensure the film formation Transparency and gloss.