With the development of packaging printing and people's understanding of high-speed printing modes such as flexographic printing, anilox rollers have become well known. However, many people in the industry do not know much about the maintenance, application and wear cycle of the anilox roller. Some people even think that the anilox roller is a printing consumable, which has a short service life and high maintenance cost, although it is high Typical products of precision manufacturing technology, but it is difficult for general printing companies to make long-term investment. Is this view wrong? We analyze from the technical changes of the anilox roller.
ã€Overview】 Analysis of the misunderstanding of the development and application of anilox technology
Dutch APEX company's unique proprietary technology-ULTRACELL laser engraving method, which uses variable pulse technology, so that the shape of the engraved mesh is U-shaped, the amount of ink on the anilox roller with the same line number and mesh depth, The average is 10-15% higher than that of CO2 carving. Moreover, the surface is smooth, the tension is large, and the transferability of the ink is better. In this way, we have a reason to increase the line number of the anilox roller without worrying that the color density of the printed product cannot meet the customer's requirements. The line number of the anilox roller is increased to increase the line number of your printing plate, or to thin your "minimum dot", even if these parameters are not adjusted, the more uniform ink layer provided by the higher net line will also make your prints The quality is better.
The second step to improve the accuracy of the printing network is to choose a more reasonable method of scraping ink. At present, the main scraping methods are divided into two types: rubber roller scraping and ink scraper scraping. The former's "uniform ink" function exceeds its "scraping ink" function. It is suitable for printing on the ground and less demanding dots. If you want to increase the dots as much as possible For precision, it is necessary to use a scraper. This is also the reason why almost all the high-end equipment on the market is equipped with a scraper. However, I have heard that some companies use a scraper originally, and later use a rubber roller. The excess ink on the surface of the anilox roller is scraped off cleanly, giving us exquisite printing effects, and the "function" of the anilox roller that wears out faster. This is a great test for the wear resistance of ceramic anilox rollers.
The Dutch APEX company's ULTRAMALT mesh trimming technology can best reflect its value at this time. The basic principle of ULTRAMALT technology is to allow some ceramic melt to re-solidify on the surface of the mesh while maintaining a high ink volume. The hole and the mesh wall form a smooth protective layer, so as to achieve the purpose of improving the wear resistance of the anilox roller. Against scratches, the effect is obvious. At the same time, it also improves the transfer performance of the ink, the easy cleaning performance of the anilox roller, and reduces the blade wear.
Of course, the reason for the anilox roller scraping mainly lies in the design of the machine, the type of scraper, the pressure of the scraper, the ink, the impurity content of the carton, the environment of the workshop, etc. The ULTRALMELT technology can only reduce the scraping and extend the anilox roller. The service life can not cure the scratch problem.
It seems that to improve the printing quality of the carton, the line number of the printing plate must be increased and the "minimum dot" must be reduced. Before this, the line number of the anilox roller and the ink scraping system must be improved. To increase the line number of the anilox roller and use a scraper If you scrape ink, you must rely on the improved technology of anilox roller production, otherwise, you will encounter various unsolvable technical problems.
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