Ceramic anilox roller

Development and classification of anilox rolls

The development history of ceramic anilox roller in flexo printing

Flexo printing first originated in the United States in 1938. The texture on the rollers was embossed. The production was very rough. It was mainly used on carton outer packaging (also known as industrial packaging). However, in use, it was found that the roller wear was very large, making it difficult to guarantee the printing quality and printing cost.

In 1939, the anilox roller was electroplated, and a harder metal (such as chromium) was plated on the outer surface, but it was still difficult to meet the requirements.

In 1970, it was proposed to use hard ceramics to make anilox rolls. However, it is extremely difficult to indent the ceramic. Until 1984, the mature development of laser technology and the wide application of various industries. The laser anilox roll was officially adopted. This technology was introduced by Taiwan Yiming Company in 1989.

Laser engraved ceramic anilox roller

The early anilox roller engraving form uses chrome plating on the surface and mechanical engraving. It is used for processing and coating of slightly thicker cartons or plastics. When the chrome-plated anilox roller is just used, the printing effect is not bad, but because the metal surface is easier to wear, the life of the anilox roller is very short. Coupled with the limitation of the shape of the mechanical engraving mold, the number of lines cannot be increased, and it is even difficult to meet the needs of mid-range flexographic printing. I believe that it will be gradually replaced by ceramic rollers over time.

02 laser engraving ceramic anilox roller

At present, most laser anilox engraving manufacturers use traditional C02 laser engraving technology. This type of effective network cable is about 80-400LPI, which can meet the basic principle-free requirements of carton printing, and can print full-tone and thicker text. The invention of laser ceramic anilox roller has greatly improved the printing quality of flexo printing. However, because the dots engraved by the traditional C02 laser are not clear enough and the mesh holes are not wide enough, it is difficult to improve the network line.

Co2 multiple engraving ceramic anilox roller

The state-of-the-art CO2 laser engraving system repeats the dot-punching method, which can change the shortcomings of traditional CO2 laser engraving, making the mesh very wide, making the mesh shape more even, and expanding the network wire to 50-1000LPI.

YAG laser engraving ceramic anilox roller

The characteristic of flexographic printing is "high speed, environmental protection, economy", so it was widely used in the 1990s. The emergence of YAG laser technology has made certain improvements in the number of screen lines and mesh definition, and can be used with flexographic printing with a higher definition. However, the range of the engraved network cable is 600-1500lpi; it is not suitable for carton printing. The disadvantage is that the YAG laser is more difficult to maintain stability during engraving, making it more difficult to control the uniformity of the mesh shape of the entire anilox roller, which is likely to cause uneven ink volume in different parts. [NextPage]

Anilox roller cell

As the "heart" part, there are pits with the same size and uniform depth, which we call the important part of the net hole is the net hole distributed on it. The net holes have the following shape specifications.

Honeycomb type 60 Â° Diamond type 45 Â° Honeycomb type 30 Â° Diagonal type (1 Â° -89 Â°)

60 Â° ï¼ˆHexagonï¼‰ Cells 45 Â° ï¼ˆDiamondï¼‰ Cells 30 Â° ï¼ˆHexagonï¼‰ Cells Tri-helical (from1 Â° to 89 Â° Line Number Screen Range Available:

40-1200 lines / inch (LPI) 16-400 lines / cm (L / cm)

Roller Size Available:

Face length Engravng lenght: Max 4,000mm (max.)

Totel length: Maximum 4,300mm (max.)

Diameter: Max 400mm (max.)

At present, the deepest and best use is the 60 Â° honeycomb-type mesh. According to calculations, the honeycomb-shaped mesh with the same area and the same network line can reach 1.155 times the number of diamond-shaped meshes The resolution is higher.

The application of anilox rolls in other aspects, anilox rolls are used in gravure coating in addition to flexo printing

The anilox roller is directly immersed in the ink, and the ink is scraped off by F (scraper) and then directly printed on the substrate. The resistance to printing varies according to the material to be printed, up to 1500-10000