Four factors needing attention when using Wholesale Anilox roller Manufacturers china

The full name of Wholesale Anilox roller Manufacturers china is anilox ink transfer roller. It is a very fine and important component in the ink transfer part of flexo. In the process of use, four specific factors are very important.

1. Select the appropriate volume of Wholesale Anilox roller hole

The size of the volume directly determines the ink supply of the Wholesale Anilox roller Manufacturers china. Printing products with different fineness need different ink supply. Therefore, the volume of the mesh hole should be fully considered when selecting the Wholesale Anilox roller Manufacturers china.

2. Select the appropriate number of anilox lines of Wholesale Anilox roller Manufacturers china

Generally speaking, the ink supply of Wholesale Anilox roller Manufacturers china decreases with the increase of the number of anilox lines. The higher the number of anilox lines, the smaller the ink supply and the better the relative uniformity. For the development of a single net hole, because the shape of the net hole determines the edges and corners inside the net hole, and because of the edges and corners of the net hole, it leads to the blocking effect of the net hole on the ink transmission, that is, the "edge and corner effect". The higher the number of anilox lines, the more the number of mesh holes in the unit length. At the same time, considering the existence of mesh wall between each two mesh holes, under the condition of the same volume, the higher the number of anilox lines, the greater the opening of mesh holes, that is, the greater the relative depth, and the stricter the corner effect. After reprinting the equipment, resulting in the reduction of ink transfer. Therefore, the ink supply should also be fully considered when selecting the number of anilox lines.

① Consider the fineness of the printed matter

Relatively speaking, cosmetics packaging requires a large amount of ink for field, line and text, and the number of screen lines is low; The color screen pattern requires a small amount of ink and a high number of screen lines. In addition to the factors of ink supply, the number of dot lines on the printing plate should be considered at the same time. The fineness of printed matter depends on the number of dot lines. After the dot size is determined, if the Wholesale Anilox roller Manufacturers china with lower number of lines is used, the area of each dot will be greater than that of some dots on the printing plate. In this way, when printing, the dot will be immersed in the dot because there is no support of partition wall. Not only the dot surface will be inked, but also the side wall will be inked, resulting in the increase of dot, For example, the color block with 80% dot area ratio will lead to paste CTP, print into the field, and lead to the failure of edge ghosting. Practice has proved that in order to obtain high-quality printing, the ratio between the number of anilox lines of Wholesale Anilox roller Manufacturers china and the number of dot lines of printing plate is about 4:1.

② Consider the printing materials and printing requirements

Different substrate materials have different ink absorption and different ink drying methods. Therefore, the factors of ink demand of substrate materials should be fully considered. Generally, those with large ink absorption, low number of screen lines, small ink absorption and high number of screen lines.

3. Select the appropriate mesh hole shape

① Matching with ink supply form

The ink supply form of flexographic printing is mainly divided into two types of prepress equipment: double roller type and scraper type. The scraper type can be divided into three types: forward scraper, reverse scraper and fully closed double scraper. Under the condition of the same number of lines, the volume of the pyramid shaped mesh hole will be rapidly reduced due to the wear of the scraper. Therefore, the pyramid shaped mesh hole is used with the form of double roller ink supply in most cases. The quadrangular and hexagonal prisms can be used in the scraper type.

② Matching with ink type

Oblique line mesh hole can ensure the fluidity of ink and improve the ink transmission of Wholesale Anilox roller Manufacturers china. Therefore, for the printing suitability of ink with high viscosity, or varnish, coating, etc., Wholesale Anilox roller Manufacturers china can be used for ink supply.

4. Select the appropriate anilox angle

Generally, 60 ° hexagonal ceramic Wholesale Anilox roller Manufacturers china is selected for ink supply in most cases, and other Wholesale Anilox roller Manufacturers china are used only in special cases.