The "Three Diligence" Principle in Flexographic Printing
Time:2025-08-15
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Flexographic printing is a widely used printing technology, and in order to ensure the high quality of printed materials, it is necessary to follow the "three diligence" principle, which includes frequent rubbing of the plate, frequent measurement of ink viscosity, and frequent sampling. Below is a detailed introduction to the implementation methods and importance of these three principles:
Clean up frequently
1. Reason: During the flexographic printing process, the printing plate is easily affected by dust and paper powder, while water-based ink dries quickly and easily solidifies around the pattern, leading to printing failures.
2. Method: During normal startup, use a clean cloth and a small amount of alcohol to regularly wipe the printing plate to maintain its cleanliness and printing quality.
Regularly measure ink viscosity
1. Importance: Ink viscosity has a direct impact on printing quality. Excessive viscosity can lead to difficulty in ink transfer, slow drying, quick adhesion and drying on the back of printed materials, light color on the ground, and easy occurrence of dirty spots and water marks.
2. Method: Regularly measure the viscosity of water-based ink and control it between 35-42 seconds (apply 4 cups) to ensure satisfactory printing results.
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Frequent sampling
1. Importance: Various printing defects are prone to occur during the flexographic printing production process. The production efficiency of high-speed printing machines is very high. If not checked regularly, semi-finished products with quality problems may flow into the next process, causing resource waste.
2. Method: Conduct regular sampling inspections during the printing process to ensure consistency in the quality of printed materials, promptly identify and resolve production issues, and reduce scrap rates. Following the "three diligence" principle can effectively improve the production efficiency and print quality of flexographic printing, reduce waste in production, and ensure the production efficiency of printing enterprises. Printing companies should incorporate these principles into their daily production management and continuously improve the overall level of flexographic printing through continuous practice and optimization.
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