Ink transfer performance of good price and quality Anilox roller from China manufacturer

Anilox roller from China manufacturer is the main component of the quantitative ink supply system of flexographic press. The quality of anilox roller directly affects the quality and effect of printing. The ink transfer performance of good price and quality Anilox roller refers to its ability and uniformity of receiving and transferring ink. The ink transfer performance of good price and quality Anilox roller is related to the shape, arrangement angle and capacity of mesh holes, as well as the number of lines and manufacturing materials of good price and quality Anilox roller from China manufacturer. The influence of these factors on the ink transfer performance of good price and quality Anilox roller from China manufacturer is discussed below.

1、 Shape and arrangement angle of mesh holes of good price and quality Anilox roller from China manufacturer
The opening shape of the top looking net hole is rhombic and regular hexagonal. The opening degree of the regular hexagonal net hole is large, so the inking and ink transfer performance is better than rhombic. The section shape of the mesh hole is generally hemispherical, and the mesh wall of this shape is smooth, which is conducive to the transmission of ink. The arrangement angles of mesh holes are generally 30 °, 45 ° and 60 °.

The 30 ° regular hexagonal mesh hole has good ink interpretation, but the mesh wall on the surface of the anilox roller causes excessive wear between the ink knife and the anilox roller, and the mesh wall will destroy the uniformity of ink flow. Therefore, it is difficult to produce a uniform ink film in the 30 ° regular hexagonal mesh hole.

The 45 ° rhombic mesh hole has good working performance, but its mesh wall is generally 15-20 μ M wide, so that the mesh hole gap is large and the ink layer transmitted is not very uniform. Moreover, the shape of the communication pipeline of the 45 ° diamond mesh hole tends to be too deep, which will reduce the release of ink, be unfavorable to the transfer of ink, and increase the plug of ink at the bottom of the inking hole, thus increasing the difficulty of cleaning.

For 60 ° regular hexagonal mesh holes, due to its effective geometry, it can make maximum use of space, and the 60 ° arrangement makes the mesh holes arranged compactly, that is, more mesh holes of the same size can be carved on the surface of good price and quality Anilox roller in the same area to transmit more ink. According to the mathematical calculation, in the same area, the space area occupied by the regular hexagonal net hole is L5% more than that of the diamond net hole, which means that the regular hexagonal net hole can reduce the hole depth by L5% without affecting the original capacity. Therefore, the 60 ° regular hexagonal net hole can be carved shallower under the condition of transmitting the same amount of ink, which is conducive to the transmission of ink.
The good price and quality Anilox rollers arranged at 45 ° and 30 ° are generally only used for coating, film coating and some special printing. They are no longer used in ordinary flexographic printing. The hexagonal net hole 60 is the most widely used in production. Arranged anilox rollers from China manufacturer.

2、 Capacity of good price and quality anilox roller hole

Mesh hole capacity refers to the amount of ink that the good price and quality Anilox roller from China manufacturer can hold per unit area under normal conditions, and the unit is bcmin2 (1010) μ m3/in2)。 The capacity of the net hole is related to the depth and opening degree. When the volume of the net hole is certain, the depth of the net hole is inversely proportional to the opening. Generally speaking, the depth of the net hole is 23% ~ 33% of the opening (i.e. the opening of the net hole is 100%) μ m. Then its depth is 23-33 μ m) , the ideal is 28%.

The size of mesh hole capacity has a great influence on the increase of dot in printing. If the net hole capacity is large, the amount of ink transmitted is more, and the dot is easy to increase; The capacity of the mesh hole is small, and only a small amount of ink is transferred to the substrate in the printing process, which is conducive to preventing the increase of dot and flying ink and ensuring the printing quality. Therefore, the smaller the capacity of the mesh hole, the better when it meets the ink transfer requirements. This also proves that the regular hexagonal anilox roller arranged at 60 ° is the best. This arrangement enables more mesh holes with equal volume to be arranged per unit area, and the mesh holes can be made smaller under the condition of transmitting the same amount of ink.

3、 Number of lines of good price and quality Anilox roller from China manufacturer

The number of lines of good price and quality anilox roller refers to the number of holes in the net per unit length along the axial direction of good price and quality anilox roller, which determines the uniformity and amount of ink transfer of good price and quality anilox roller from China manufacturer. The higher the number of lines of the good price and quality anilox roller from China manufacturer, the closer the ink layer on the good price and quality anilox roller is to the "continuous" state. In addition, the number of lines of anilox roller is directly related to its capacity, so it has a very important impact on the ink transfer capacity. When the number of anilox roller lines increases, the opening area of inking hole decreases and the capacity decreases, so the ink transfer capacity also decreases. It can be seen that the higher the number of anilox roller lines, the smaller the ink transfer.

In addition, the number of lines of good price and quality anilox roller determines its own scope of application. Generally speaking, when printing large-area field color blocks or images with low requirements, the good price and quality anilox roller with low line number shall be considered; when printing halftone or color, the anilox roller with high line number shall be used to ensure that the opening area of inking hole is less than the minimum dot area on the printing plate, so as to reduce the increase of dot. For some fine lines, the ratio must be about 1:5. However, the higher the number of lines of the anilox roller is, the better. The high number of lines makes it difficult for the inking hole to release ink to the printing plate after inking, resulting in insufficient ink supply and insufficient field density. Therefore, the selection of good price and quality anilox roller should not only pursue the number of high lines of anilox roller from China manufacturer, but also consider the printing density. In practical work, the number of lines must be reasonably selected according to different grades of printed matter.