There are many factors that affect the printing accuracy of flexo printer slotter machine, which cover the entire process from plate making to printing, as well as the selection and use of printing equipment and materials. The following are some of the main influencing factors:
1. Plate making process
Screen making:
Drying the screen at different temperatures may cause errors in printing accuracy. Low screen tension, different overprint screen tension or uneven drying of the screen during drying will affect printing accuracy.
Screen frame plate making:
Use too old, weak or deformed screen frame to make plates. Due to the poor stability of the screen frame, the printed image will be deviated.
2. Printing equipment and process
Printing plate position:
The center line of the printing plate is not aligned with the engraved line in the middle of the roller, which will cause inaccurate overprinting.
Equipment tension control:
The equipment tension setting is not appropriate, such as the left and right deviation of the overprint cross line is completely irregular and when the printing speed changes greatly, the tension control of the flexo printer slotter machine may be poor.
Ink viscosity:
Excessive ink viscosity will cause the paper tape to have excessive local tension in an instant, resulting in overprint deviation.
Changes in substrate size:
Affected by certain factors, changes in substrate size will affect printing accuracy.
Squeegee deformation:
Squeegee deformation will also affect printing accuracy.
3. Materials and selection
Screen plate making materials and printing materials:
Including the selection of screen frame materials, screen materials, mesh count, color and printing paste performance, will directly affect the printing accuracy of flexo printer slotter machine.
Substrate materials:
The material, thickness, ink absorption and other characteristics of the substrate will also affect the printing effect.
4. Working environment
The environmental conditions such as temperature, humidity, cleanliness, etc. of the workplace, especially cleanliness, are important factors affecting the printing quality of flexo printer slotter machine.
