Daily cleaning: During use, the ceramic anilox roller should be cleaned regularly to prevent ink, paint and other residues from accumulating in the mesh cells. Generally, special cleaning agents and cleaning equipment are used for cleaning. When cleaning, attention should be paid to choosing appropriate cleaning methods and cleaning agents to avoid damage to the ceramic coating.
Avoid collisions and scratches: Although the ceramic coating on the surface of the ceramic anilox roller has high hardness, it is still necessary to avoid collisions or scratches with sharp objects to avoid damage to the anilox structure and ceramic coating on the surface of the anilox roller, affecting its performance and service life.
Regular inspection: Regularly inspect the anilox depth, opening rate, wear and tear of the ceramic anilox roller, find problems in time and take corresponding measures. If the anilox roller is found to be worn or damaged, it should be repaired or replaced according to the specific situation.
Correct storage: When not in use, the ceramic anilox roller should be stored in a dry, well-ventilated environment to avoid moisture, rust or other pollution. At the same time, it is necessary to place the anilox roller on a special bracket to avoid it from being squeezed or deformed.
1.Consider the printing or coating material: Different materials have different absorption and adhesion properties for ink or coating. It is necessary to select an anilox roller with appropriate mesh depth and opening rate according to the characteristics of the material. For example, for paper with strong absorption, an anilox roller with deeper mesh depth and larger opening rate can be selected to ensure sufficient ink transfer; while for non-absorbent plastic film, an anilox roller with shallower mesh depth and smaller opening rate needs to be selected to avoid excessive ink transfer leading to plate paste or poor drying.
2.According to the printing or coating process: the process parameters such as printing or coating speed and pressure will also affect the selection of anilox roller. In the process of high-speed printing or coating, the anilox roller needs to have good ink release performance and fast ink transfer speed. An anilox roller with a larger mesh angle and a cell shape that is conducive to ink flow can be selected; in some fine printing or coating processes that require precise control of the amount of ink, an anilox roller with high mesh accuracy and accurate cell volume needs to be selected.
3.Combined with the characteristics of ink or coating: the viscosity and drying speed of ink or coating are also important factors in selecting anilox rollers. High-viscosity inks require a larger cell volume to accommodate and transfer, so you can choose an anilox roller with a deeper mesh depth and larger cell openings. For inks that dry faster, you need to choose an anilox roller that can release the ink quickly to avoid drying and clogging of the ink in the cells.
Conventional anilox: Common anilox shapes include diamond and hexagon. The diamond anilox has a simple structure and good ink transfer performance; the hexagonal anilox has better uniformity and stability, and can more accurately control the amount of ink during high-speed printing or coating.
Special anilox: According to different application requirements, there are also some special anilox structures, such as twill anilox and honeycomb anilox. Twill anilox can improve the flow performance of ink and reduce the ink residue in the mesh; honeycomb anilox has higher ink transfer efficiency and more uniform ink layer distribution, which is suitable for some occasions with extremely high requirements for ink volume control.
Material: The surface of ceramic anilox roller is ceramic coating, while ordinary anilox roller may be rubber, metal or other materials directly as the surface, or the surface is simply treated without ceramic coating. Ceramic coating makes the anilox roller have higher hardness, wear resistance and chemical stability.
Performance: Ceramic anilox roller performs better in the transfer accuracy and uniformity of ink or coating, and can achieve more refined printing or coating effects. At the same time, due to the low friction coefficient of ceramic, its performance at high speed is also better, which can reduce damage to printing or coating materials. The performance of ordinary anilox rollers in these aspects is relatively poor, especially in the case of long-term use or high precision requirements, the gap will be more obvious.
Service life: Due to the good wear resistance and corrosion resistance of ceramic anilox rollers, their service life is usually much longer than that of ordinary anilox rollers. Ordinary anilox rollers are prone to damage or deformation of the anilox rollers due to wear, corrosion and other reasons, and need to be replaced more frequently.
Ceramic anilox rollers are widely used in packaging printing, such as food packaging, pharmaceutical packaging, cosmetic packaging, etc. In label printing, they can meet the needs of high-quality label printing. They are also suitable for publishing and printing, and can print clear and colorful books and magazines. In addition, in special printing fields, such as anti-counterfeiting printing and electronic printing, their high precision and stability can also play an important role.
The higher the screen count, the more ink holes per unit length on the surface of the anilox roller, the smaller the ink transfer, and it is suitable for printing fine images or fine text lines; the lower the screen count, the greater the ink transfer, and it is suitable for printing large areas of solid color blocks or images with low requirements. The mesh volume determines the amount of ink that each ink hole can hold. The larger the volume, the greater the ink transfer, but it may also cause problems such as uneven ink transfer or dot enlargement.
There are many tiny concave holes on the surface of the anilox roller, namely the ink holes. During the printing process, the ink is first applied to the surface of the anilox roller, and the scraper scrapes off the excess ink, leaving only the ink in the ink holes. When the anilox roller contacts the printing plate, the pressure causes the ink in the ink holes to be transferred to the printing plate, thereby achieving quantitative ink transfer.
Wear resistance: Ceramic materials have high hardness and can maintain the shape and size of the mesh for a long time under high-speed and high-pressure printing environments, ensuring the stability of the quality of printed products.
Corrosion resistance: It can resist the erosion of various chemical substances. When it comes into contact with different inks and cleaning agents, it will not undergo chemical reactions or physical changes, ensuring the service life and quality of printed products.
Temperature stability: It has good thermal stability, can maintain stable physical and chemical properties under high or low temperature environments, adapt to various temperature changes, and ensure the stability and consistency of printed products.
Good ink release performance: Its mesh structure and surface characteristics are conducive to the formation of a uniform ink film on the surface of the anilox roller. After the action of the scraper, it can ensure that a certain amount of ink is involved in printing, so that the quality and clarity of the printed products can be guaranteed.
The surface of the ceramic anilox roller is engraved with fine patterns. In the flexographic printing process, ink is applied to the surface of the anilox roller, and the scraper scrapes off the excess ink, leaving only the ink in the patterns. When the anilox roller contacts the plate cylinder, the pressure transfers the ink from the patterns to the plate, and the plate then transfers the ink to the substrate.
There are many tiny concave holes evenly distributed on the surface of the anilox roller, namely the ink holes. During the printing process, the ink holes store ink and transfer the ink evenly to the printing plate through contact with the printing plate, playing the role of ink storage, ink distribution and quantitative ink transfer.
