What is water based flexo ink?

Date: Aug 18 2024 From: Star Color

1. Overview of Water-Based Flexographic Ink

Water-based flexographic ink is a kind of water-based ink used for flexographic printing. Its main components are water-soluble resin, organic pigment, water, solvent and related additives. These components make water-based flexographic ink have unique environmental protection performance and printing effect. According to the different binders, water-based flexographic ink can be divided into two main types: water-dilutable type and water-dispersible type. Both types of inks show good stability and adaptability during the printing process.

2. Characteristics of Water-Based Flexographic Ink

The environmental protection of water-based flexographic ink is one of its biggest characteristics. Compared with traditional solvent-based inks, water-based flexographic ink can significantly reduce the emission of VOC (volatile organic compounds) during the printing process, thereby effectively preventing air pollution and improving the printing environment. In addition, water-based flexographic ink is harmless to human health, not easy to burn, and has high safety, providing a safer working environment for printing workers.

In addition to environmental protection, water-based flexographic ink also has excellent printing performance. It has bright colors, does not corrode the plate material, and is easy to operate. After printing on absorbent substrates, it has good adhesion, strong water resistance, and dries quickly. Even on non-absorbent substrates, it only needs to be corona-treated to make the surface tension of the substrate reach 38 dynes to obtain sufficient adhesion, so that the printed product has better durability and texture. In addition, water-based flexographic ink does not burn or explode, and also shows good stability during storage and use.

Taking the water-based flexographic ink produced by Huizhou Zhongzhixing as an example, its VOC content is only 1%, the color concentration is high, the printing effect is excellent, the viscosity is low, and it has good leveling properties. The printing speed can reach more than 400 meters per minute.

What is water based flexo ink?

3. Application fields of water-based flexographic inks

Water-based flexographic inks are mainly used in flexographic printing and are suitable for various absorbent and non-absorbent materials, such as: paper, corrugated paper, plastic film, non-woven fabrics, woven bags, aluminum foil, etc. Especially in packaging and printing products with strict hygiene requirements such as food, medicine, and cosmetics, water-based flexographic inks can easily achieve food grade and have become the preferred material. For example, in food packaging, water-based flexographic inks can ensure that the printed packaging materials are non-toxic, odorless, and environmentally friendly, thereby ensuring the safety and hygiene of food. In the printing of pharmaceutical labels and cosmetic bottles, water-based flexographic inks can also achieve clear and bright printing effects, while meeting the high requirements of these products for printing materials.

Huizhou Zhongzhixing produces a large part of water-based flexographic inks for the printing of diapers, sanitary napkins and napkins, which are well received by customers.

4. Control indicators of water-based flexographic inks

In order to ensure the printing effect and quality of water-based flexographic inks, it is necessary to strictly control its fineness, viscosity, drying speed and pH value.
Fineness is a physical indicator that measures the particle size of pigments, fillers, etc. in inks. It directly affects the printing effect and smoothness of inks. The smaller the value, the better.
Viscosity is one of the most important control indicators in the application of water-based flexographic inks. It affects the transferability of inks. If the viscosity is too small, the transfer performance is not enough. If the viscosity is too large, the leveling performance is not enough, which affects the printing efficiency and effect. Therefore, during the printing process, the viscosity of the ink needs to be constantly adjusted to meet different printing needs.
Drying speed is also one of the important factors affecting the printing effect. Too fast or too slow drying speed will cause quality problems in printed products. Therefore, it is necessary to control the drying speed by adjusting the ink formula and printing conditions to ensure the drying effect and durability of the printed products.
PH value is also one of the important factors affecting the stability and drying speed of the ink. By adding an appropriate amount of additives to maintain a suitable PH value range, the printing performance and stability of the ink can be further improved.

flexographic printing

5. Environmental advantages and future prospects of water-based flexographic inks

The environmental advantages of water-based flexographic inks are not only reflected in its reduction of VOC emissions and prevention of air pollution, but also in its importance in improving the level of green development in the printing industry. With the increasing global attention to environmental issues, green printing has become an inevitable trend in the development of the printing industry. As one of the important materials for green printing, water-based flexographic inks have a very broad market prospect.

In the future, with the continuous advancement of technology and the continuous expansion of the market, the application field of water-based flexographic inks will be more extensive. At the same time, with the deepening of people's understanding of environmental protection issues and the popularization of green consumption concepts, the market demand for water-based flexographic inks will continue to grow. Therefore, we have reason to believe that in the future printing industry, water-based flexographic inks will play a more important role and continue to innovate and develop.

Huizhou Zhongzhixing Color Technology Co., Ltd., as a leader in the field of environmentally friendly inks, our water-based inks have won wide recognition in the market for their excellent environmental performance, outstanding printing effects and stable quality. Not only does it meet international environmental standards such as REACH, RoHS, etc., it also has the characteristics of low VOC (volatile organic compounds) emissions, providing strong support for customers' green production. Zhongzhixing Color's water-based inks are widely used in food packaging, medical supplies packaging, children's toy packaging and other fields to ensure that the products are safe and harmless, and meet the strict requirements of the global market for environmental protection and health.

What is water based flexo ink?

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