1. You can directly use pure water to dilute, the proportion needs to be controlled by yourself, depending on the concentration and viscosity of water-based ink, generally not more than 20%, the more water added will lead to the weatherability of water-based ink, adhesion, drying speed and color will have an impact.
2. You can use ethanol dilution, especially if you want to speed up the printing speed, you can use no more than 30% ethanol dilution, adding ethanol will not affect the color of water-based ink printing.
3. When it is not necessary to increase the printing speed, it can be diluted with ethanol and water after mixing, and there is no special requirement for the specific ratio. Under normal circumstances, water is the main and ethanol is the supplement.
Water-based ink with what dilution? What should I pay attention to in the dilution process?
In the process of dilution, flexible packaging printing has some points to pay attention to:
1. When diluting, it is necessary to always pay attention to the annual, leveling and color concentration of water-based ink
2. It is also necessary to detect the PH value of water-based ink when diluting, and it is recommended to keep it between 8.5-9.5
3. Do not use other solvents to mix water-based ink together.
4. When diluted water-based ink is used, it will be in contact with air and volatilized naturally, so it is often necessary to detect viscosity and PH value.
5. The remaining water-based ink after use should be sealed, otherwise the surface will crust, affecting the next use.
In fact, water-based inks are divided into several kinds, such as flexographic water-based inks, gravure water-based inks and silkscreen water-based inks, among which flexographic and gravure water-based inks are similar due to the printing method, so the water-based inks used are also relatively close, and the water-based inks used in screen printing are relatively different, relatively speaking, the water-based inks used in flexographic and gravure are relatively low in viscosity.Screen printing inkGenerally speaking, these inks do not need to be diluted when they are used again, and some long-term inks may need to be diluted due to sealing, water evaporation and other reasons. The water-based ink produced by Huizhou Zhongzhixing Color can be diluted with pure water, without the use of special diluents, ethanol, medical alcohol, etc. This is also the reason for the environmental protection of water-based ink, because there is no organic solvent, ethanol, etc., it will not burst into flames, in order to ensure the printing quality, the dilution ratio should not exceed 10%, Zhongzhongxing water-based ink has been using a high-concentration and low-viscosity way to ensure the color of printing, and will not have some printing quality problems because the viscosity is too large.