Flexo Printing Ink

Flexographic printing ink is a high-performance ink for flexographic printing, which is widely used in various industries such as food, medicine, cosmetics and other packaging printing. It has good printing performance, strong rub resistance and water resistance, and can meet the needs of various packaging printing.

 

Flexographic printing inks are mainly used for printing on various paper packaging materials, such as paper bags, paper boxes, labels, and various paper products. The flexo printing ink used are generally water-based inks, and the printing speed is fast. The printing plate has good ink transfer performance and can achieve high print quality.

1. Good printing performance, strong rub resistance and water resistance, can meet the needs of various packaging printing.

2. Fast printing speed, good ink transfer performance and can achieve high print quality.

3. High precision, no color deviation, no bleeding.

4. The color is bright and can be customized according to customer requirements.

 

Applications

Flexo printing inks are mainly used for printing on various paper packaging materials, such as paper bags, paper boxes, labels, and various paper products. It can also be used for printing on non-paper materials, such as plastic film, aluminum foil, etc. It is widely used in food, medicine, cosmetics, clothing and other packaging printing.

1. How to adjust the viscosity of flexographic printing ink?
Viscosity directly affects the fluidity and printing effect during the printing process. The viscosity of flexographic printing ink should be adjusted according to the printing speed, printing plate type and ambient temperature. The viscosity of the ink can be controlled by adding solvents, water or specific viscosity regulators to ensure stable printing effects.

2. How to choose a suitable substrate for flexo printing ink?
When selecting ink, the material and surface treatment of the substrate should be considered. Different substrates (such as plastic film, paper, metal foil, etc.) have different surface energies, which affect the adhesion of the ink. To ensure that the ink is firmly bonded to the substrate, it is necessary to select the appropriate ink type according to the characteristics of the substrate and ensure that the substrate is properly treated (such as corona treatment, coating treatment, etc.).

3. How does the VOC content in flexographic printing ink affect environmental protection?
The volatile organic compound (VOC) content is a key indicator for measuring the environmental protection of ink. Traditional solvent-based inks contain high VOCs and will pollute the environment. Water-based inks and UV-curable inks meet environmental protection standards due to their low VOC or zero VOC characteristics, and are environmentally friendly alternatives in the field of flexographic printing.

4. How can flexographic printing inks ensure fast drying without affecting the printing quality?
Flexographic printing requires fast drying of inks to adapt to high-speed printing processes. Inks can be dried by solvent evaporation, water evaporation or UV curing. The key to ensuring printing quality is to control the drying speed and substrate absorbency to avoid uneven colors caused by too fast drying of the ink or blurring caused by too slow drying.

5. Why is surface tension important in flexographic printing inks?
The surface tension of the ink must match the surface energy of the substrate to ensure good adhesion. Ink surface tension that is too high or too low will cause printing quality problems, such as the ink not being able to spread evenly or insufficient adhesion. Corona treatment is usually used to increase the surface energy of the substrate to ensure ink adhesion.

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