Traditional printing is an industry in which text and images are copied in large quantities on paper, plastic, metal, and other base materials, ranging from a few hundred to tens of thousands. The quality requirements are uniform ink color, consistent darkness, clear text lines, and no spending Not obscure. The color image is colorful, rich in layers, and has a strong three-dimensional sense. Replicas should be loyal to the original or conform to the natural color, so the traditional printing method has made careful consideration and careful design of the ink transfer system to meet the requirements of ink transfer. Basic requirements for the ink transfer system: â‘ There is a reasonable amount of ink, â‘¡ The amount of ink must be uniform, â‘¢ The ink can be supplied quantitatively over and over. Only in this way can a large number of reproductions be met. Otherwise, one sheet is dark, the other is dark, the ink is dark and dark, and the text and lines are thick and thin, which cannot meet the quality requirements. The anilox roller was not used in the early flexographic printing ink transfer system, so the ink color was very unstable, and only the less demanding products could be printed. The anilox roller was developed through continuous improvement in practice. The flexographic printing ink transfer system began to use rubber rollers, felt rollers, and metal smooth rollers. The rubber roller is made of natural rubber, its mechanical precision is not high, and the ink is difficult to control, so it can only print some rough and simple paper bags at the time; the felt roller uses the felt to absorb ink, but the felt life is not long. Soon after use, the connecting material in the ink will make the felt hard, and the felt loses the characteristics of absorbing and releasing ink, so it is not ideal. Although the processing accuracy of the metal smooth roller is relatively high, the gap between the two rollers can be used to control the amount of ink, but due to the tension of the ink, the ink will accumulate and produce one line of streaks, resulting in uneven ink transfer, so the printing quality Not high. In the future, some people used high-speed spraying of steel shots on the surface of the metal smooth roller to increase the hardness of the metal surface to produce roughness and pits on the surface of the metal smooth roller. Although the properties of the metal smooth roller were changed, the ink was not easy to accumulate, but the spray Maru cannot guarantee that the depth is consistent with each roll; it has also been tried to sinter ceramics on steel rolls to naturally form irregular pits, but it is also not easy to control. Around the 1930s, due to the development of photographic and electroplating corrosion technologies, the metal anilox rolls were corroded with copper plated on steel rollers and then printed with carbon paper or photographic film. This type of anilox roller can be controlled due to the anilox and copy processing. Although it has taken a big step forward and laid the foundation for the development of the anilox roller, it is still not ideal: â‘ There is a seam, the ink volume at the seam is uneven, â‘¡ The net line is thick, about 100 l / in, thin is not easy to manufacture and corrode. In the early 1980s, China manufactured a laminated flexographic printing machine due to Anilox rolls are expensive, and corroded anilox rolls have been used. The development process of things is always constantly improving and perfecting. The development of anilox rolls has been improved and improved according to advanced processing techniques in different periods. After corroding the anilox rolls, copper plating on steel rolls has been used, and then mechanical engraving and Electronically engraved metal anilox rollers have appeared ideal metal anilox rollers without seams. But mechanical engraving is slow, and electronic engraving is carried out on steel (Shanghai Printing Technology Research Institute has successfully developed and put into production metal anilox rolls directly engraved on steel rolls), and later developed mechanical extrusion technology, directly on steel The metal anilox roller processed on the current, metal engraving roller of electronic engraving and mechanical extrusion is still widely used in corrugated box printing slotting machine, laminated flexo printing machine, and coating equipment. Regardless of the metal anilox roller processed by electronic engraving or mechanical extrusion, the number of anilox lines is generally less than 30,000 liters / in. The product therefore also limits the improvement and development of flexographic printing quality. In the mid-1980s, laser technology was used to develop ceramic anilox rollers using laser engraving. The ceramic anilox rollers can process a higher number of lines, have a wear-resistant surface, and can use a doctor blade to make the ink transfer system. The amount of ink transfer is more accurate and stable, so the appearance of ceramic anilox roller not only makes the ink transfer system of flexographic printing further improved, but also meets the requirements of printing fine products, and promotes the development of flexographic printing. It is often said that the anilox roller is the heart of a flexographic printing machine. As an anilox roller, it cannot yet form an ink transfer system in the printing press. In the early ink transfer system, two rollers were rolled against each other, and an ink disk was added, one of which was Contact with the printing plate and transfer ink to the printing plate, so it is very simple to form an ink transfer system. Therefore, people also call the ink transfer system of flexographic printing as a short ink path, and the ink transfer system of offset printing as a long ink path. This structure has been extended to the metal anilox roller, and it is still the same today. Therefore, each color group of a flexographic printing machine is usually composed of 4 rollers (cylinder) (ink fountain roller, metal anilox roller, plate roller, embossing roller), often called 4-roller type. Because of the appearance of metal anilox rollers, people will naturally contact gravure printing. Metal anilox rollers are very similar to gravure rollers. All are composed of pits, and the surface is also coated with a layer of hard chrome. The method of scraping ink with a squeegee for gravure printing is more accurate than the two-roller roll-to-roll ink transfer. On the anilox roller, and the ceramic anilox roller has a harder surface, it is more suitable for using a doctor blade, so the flexographic printing ink transfer system appears no ink fountain roller, only a metal anilox roller or ceramic anilox roller and The ink transmission form of the doctor blade is improved from forward to reverse and bidirectional closed ink chambers. The ink is supplied by a circulating pump, which reduces each color group of the flexo printing machine from four rollers to three Roller, so it is also called three-roller type. So far, the ink transfer system of flexographic printing has been practiced-recognized-improved-improved, from the kingdom of necessity to the kingdom of freedom, from simple, uncontrollable ink volume, to advanced and reasonable, which is simpler than the original, and the ink volume can be controlled . Now we can easily configure the anilox roller according to different printing base materials and printing parts, and become an ideal ink transfer system. Compostable Forks,Plastic Cutlery Fork,Biodegradable Disposable Forks,Compostable Cutlery Forks Anhui Jianfeng Environmental Protection Technology Co., Ltd , https://www.jfplacutlery.com