The influence of static electricity generated by water-based screen printing ink and its countermeasures

1、 Introduction

In the screen printing industry, water-based screen printing ink is widely used due to its advantages of environmental protection, non-toxic, and easy cleaning. However, during the printing process, due to various reasons such as friction, separation, etc., ink may generate static electricity. The generation of static electricity not only has a serious impact on printing quality, but may also pose a threat to production safety. This article will discuss in detail the impact of static electricity generated by water-based screen printing ink and propose corresponding countermeasures.

2、 The influence of static electricity generated by water-based screen printing ink

Affects printing quality

The generation of static electricity can have a serious impact on the printing quality of water-based screen printing ink. Firstly, static electricity can cause ink to splatter during the printing process, resulting in burrs at the edges of the printed pattern and affecting the appearance quality of the printed product. Secondly, static electricity can also cause uneven distribution of ink on the surface of the substrate, resulting in defects such as dots and spots, reducing the overall quality of the printed product. In addition, static electricity may also cause ink blockage during the printing process, affecting the normal operation of the printing machine.

Impact on production safety

During the printing process, high electrostatic voltage is generated due to the friction between ink, substrate, and printing machine components. When static electricity accumulates to a certain extent, it may cause safety accidents such as electric shock or fire. Especially in flammable and explosive printing environments, the harm of static electricity is more serious.

3、 Measures to deal with static electricity generated by water-based screen printing ink

Control printing environment

To reduce the generation of static electricity, it can be achieved by controlling the temperature and humidity of the printing environment. Generally speaking, controlling the temperature at 1825 ℃ and humidity between 55% and 75% can effectively reduce the generation of static electricity. In addition, keeping the printing workshop clean and reducing the accumulation of dust and other impurities can also help reduce the harm of static electricity.

Using anti-static agents

Adding anti-static agents to ink is an effective method to reduce the generation of static electricity. Antistatic agents can reduce the surface resistance of ink, improve its conductivity, and thus reduce the generation of static electricity. However, it should be noted that different types of anti-static agents have different effects on ink performance, so it is necessary to choose according to the actual situation when using them.

Installing static elimination equipment

Installing static elimination equipment on a printing machine, such as static eliminators, ion fans, etc., can effectively reduce the generation of static electricity. These devices neutralize the surface charge of ink by generating a charge opposite to the surface charge, thereby reducing the harm of static electricity.

Optimize printing process

Optimizing the printing process is also a way to reduce static electricity generation. For example, reducing printing speed and increasing ink viscosity can reduce ink splashing and blockage during the printing process, thereby reducing the generation of static electricity.

4、 Conclusion

In summary, the static electricity generated by water-based screen printing ink during the printing process can have a serious impact on printing quality and production safety. To reduce the harm of static electricity, methods such as controlling the printing environment, using anti-static agents, installing static elimination equipment, and optimizing the printing process can be used. In actual production, appropriate response measures should be selected according to the specific situation to ensure the smooth progress of the printing process and the stable improvement of product quality.