How to Improve Screen Printing Accuracy

How to Improve Screen Printing Accuracy

Screen printing industry is a type of printing method that is done by applying screen printing ink or pigment to a screen printing plate and then printing it onto the surface of an object. This printing method works by utilizing the mesh holes in the screen printing mesh to control the amount and position of the ink or pigment to create the printed pattern.

Screen printing industry is a very commonly used printing method, but the problem of poor printing accuracy often occurs in the printing process. By optimizing the production of screen printing plates, selecting suitable screen printing inks or pigments, and adjusting and maintaining printing equipment and other measures, the screen printing accuracy can be effectively improved to provide a better guarantee for the development of the screen printing industry.

There are a variety of factors affecting the screen printing accuracy. From the screen plate to the graphics printing production process, there are important factors in the following areas:

1. Screen printing plate material and printing material selection: including screen printing frame material, screen printing mesh material, screen printing mesh count and printing material performance;

2. Screen printing machine setup and equipment deployment, tooling: that is screen printing machine, positioning tooling and so on;

3. The production process includes stretching mesh, screen printing plate making, screen printing technology, etc;

4. Environmental conditions: temperature, humidity and cleanliness of the workroom. Especially cleanliness is an important factor affecting product quality;

5. Workers are the most important factors affecting the quality of the project. The manipulator must have a high degree of responsibility and high skills.

The production of screen printing plate involves the screen printing frame, screen printing mesh and mesh stretching technique, plate making and photographic materials amount. Mesh frame material selection is usually used LY12, LF2 and other alloy aluminum square tube profiles. Size selects 20mm wide and 20mm thick. The corners are processed by argon arc welding or riveting. Metal frame has high precision and solid dimensions.

In order to ensure that the screen printing graphic fineness, the best choice is 100% monofilament polyester mesh. At the same time, it should be selected with a higher number of mesh count, finer filament diameter. The color of the screen to yellow or brownish-yellow is good, in order to prevent the occurrence of halation.

Stretching mesh is the key that can not be ignored. The best method for screen printing mesh stretching is pneumatic tensile mesh machine. The screen printing mesh should be as perpendicular as possible to the edge of the mesh frame. And the tension should be controlled. Tension is not always better when it is higher. If the tension is too high, the screen printing mesh will lose its elasticity, become brittle, and even break. If the tension is too low, the screen printing mesh will be loose and soft, lacking resilience. The tension is not Use the tension meter to test the tension of the four corners and the center of the screen, if the value is basically the same, and higher than 15, the tension is qualified. The finished screen printing frame should be tested regularly in order to prevent the deformation of the polyester mesh.

The choice of ink is equally important. Different types of inks have different viscosities, drying speeds and color expression. When choosing inks, it is important to consider their compatibility with the printing material and the desired printing effect. The right ink will ensure that the printing pattern is colorful, rich and long-lasting.

Pressure and speed in the printing process are also key factors affecting the printing effect. Too much pressure may lead to too much ink penetration, resulting in blurred patterns; too little pressure may lead to ink adhesion is not firm, easy to fall off. Similarly, too fast may lead to the ink is not completely dry to enter the next process, thus affecting the quality of printing; too slow may reduce production efficiency. Therefore, in practice, the need to adjust the printing pressure and speed according to the specific circumstances to achieve the best results.

Finally, the proficiency of the operating technology will also have an impact on the screen printing effect. Skilled operators can more accurately control the parameters and details of each link, thus ensuring the stability and consistency of the printing effect. Therefore, it is important to improve the skill level and experience of operators to enhance the screen printing effect.

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