1. PH value stabilizer.
PH value stabilizer can supplement the ammonia and water volatilized from the ink transfer system during the printing process, which helps to stabilize the ink viscosity and ensure the printing quality.
According to the different substrate, pH value stabilizer is divided into ordinary and thin film.
When printing fine mesh lines, use a special pH stabilizer.
Generally, the use of pH stabilizer is to add 1%-2% of the total amount of ink every 30-40 minutes and stir evenly, or add the stabilizer to the circulating ink pump.
2, defoaming agent.
In general before the beginning of printing to add an appropriate amount of defoaming agent, in order to prevent ink froth, printing process when necessary can also add an appropriate amount of defoaming agent.
The amount of defoaming agent should not exceed 0.5% ~ 1% of the total amount of ink.
3, quick dry, slow dry agent.
According to the actual printing speed of the printing press, fast drying agent and slow drying agent can be added to the ink, and the drying speed of water-based ink can be changed appropriately, so as to get a more satisfactory printing effect.
Its usage is 1% - 2% of the total ink.
4, remove light agent.
In the pH value and viscosity of the same premise, adding light agent can make some ink color concentration down.
Its dosage should depend on the specific situation.
Add diluents in the ink without affecting the pH value, make thickened water-based ink viscosity down.
Its use must not exceed 5% of the total ink.
Reinforcement can enhance the printing ink or gloss on the substrate material adhesion, the amount of the general amount of 1%-2%.
7, in addition to electrostatic agent.
In addition to electrostatic agents can effectively prevent the accumulation of static on the printing press, the amount of the ink is generally 0.5% ~ 1%.