First, the preparation of the resin solution First solid resin solution is dissolved in a solvent to form a certain concentration (solid content), a certain viscosity solution for ink distribution.
Second, the preparation of gravure ink Photogravure ink is a solvent-based thin ink, the production of solvents need to prevent evaporation, generally closed ball mill or closed sand mill is more appropriate. The use of ball milling machine - simple operation, low loss, no flying and odor emission, low labor intensity. Except for large noise and medium efficiency, the withdrawal method can be used to make up for it. It utilizes turbulent, shear, and friction non-dispersed materials in the media (balls). Ball mill (horizontal) specifications are: 100 liters, 200 liters, 500 liters, speed 21-33 rev / min. The sander is a relatively new type of decentralized equipment that can be seen as another form of ball milling, but with smaller sand grains. In particular, closed sanding, the production of solvent-based ink with high efficiency, low loss, easy maintenance. It is the use of sand particles in the impeller and the round edge of the different speed, so that the material in the barrel to form a vortex form, resulting in shear, friction and dispersed materials. Sander (closed) specifications: 20 liters, 40 liters; spindle speed 1400 hours/minute.
Source: 21st Century Fine Chemicals Network
