At present, the international use of the eyelet per inch is also indicated by the size of each eyelet (mm).
Definition of particle mesh
The larger the mesh number, the finer the particle size of the material; the smaller the mesh size, the larger the material particle size. The sieve size is the size of the mesh through which the particles can pass through the screen. The number of meshes on the area of 1 square inch (25.4 mm x 25.4 mm) is called the mesh number.
The specifications of the national standard sieves are not the same. The commonly used Taylor system is the number of holes per inch, which is called the mesh. For example, a 100 mesh screen means 100 mesh openings per inch of screen.
Taylor Standard Screening
The Taylor sieve index is based on a 200 mesh mesh size of 0.074 mm, multiplied or divided by the square root of the main modulus 2 (2^(1/2)=1.414) nth power (n=1, 2, 3…), the size of the mesh is 200 or less, and if the square root of the secondary modulus 2 (2^(1/4)=1.1892) is multiplied or divided by 0.074mm, It is possible to obtain a mesh size of a series of meshes with a finer index.
Screen size corresponds to standard mesh
Screen size: 4.75mm Standard mesh: 4 mesh
Screen size: 4.00mm Standard mesh: 5 mesh
Screen size: 3.35mm Standard mesh: 6 mesh
Screen size: 2.80mm Standard mesh: 7 mesh
Screen size: 2.36mm Standard mesh: 8 mesh
Screen size: 2.00mm Standard mesh: 10 mesh
Screen size: 1.70mm Standard mesh: 12 mesh
Screen size: 1.40mm Standard mesh: 14 mesh
Screen size: 1.18mm Standard mesh: 16 mesh
Screen size: 1.00mm Standard mesh: 18 mesh
Screen size: 0.850mm standard mesh: 20 mesh
Screen size: 0.710mm standard mesh: 25 mesh
Screen size: 0.600mm standard mesh: 30 mesh
Screen size: 0.500mm standard mesh: 35 mesh
Screen size: 0.425mm standard mesh: 40 mesh
Screen size: 0.355mm standard mesh: 45 mesh
Screen size: 0.300mm standard mesh: 50 mesh
Screen size: 0.250mm standard mesh: 60 mesh
Screen size: 0.212mm standard mesh: 70 mesh
Screen size: 0.180mm standard mesh: 80 mesh
Screen size: 0.150mm standard mesh: 100 mesh
Screen size: 0.125mm standard mesh: 120 mesh
Screen size: 0.106mm standard mesh: 140 mesh
Screen size: 0.090mm standard mesh: 170 mesh
Screen size: 0.0750mm standard mesh: 200 mesh
Screen size: 0.0630mm standard mesh: 230 mesh
Screen size: 0.0530mm standard mesh: 270 mesh
Screen size: 0.0450mm standard mesh: 325 mesh
Screen size: 0.0374mm standard mesh: 400 mesh
Adding a plus or minus sign before the mesh number indicates whether the mesh of the mesh can be missed. A negative number indicates a mesh that can leak through the mesh, that is, the particle size is smaller than the mesh size; and a positive number indicates a mesh that cannot leak through the mesh, that is, the particle size is larger than the mesh size. For example, if the particles are -100 mesh to +200 mesh, it means that the particles can leak from the mesh of 100 mesh and cannot leak from the mesh of 200 mesh. When screening the particles of this mesh, the mesh should be large ( 200) is placed under the screen with a small mesh size (100), and the particles of -100 to +200 mesh are left in the mesh with a large mesh size (200).
| Industrial sieve (mesh) | mesh diameter (micron μm) |
| 10 | 2000 |
| 20 | 840 |
| 30 | 590 |
| 40 | 420 |
| 50 | 297 |
| 60 | 250 |
| 70 | 210 |
| 80 | 177 |
| 100 | 149 |
| 120 | 125 |
| 140 | 105 |
| 170 | 88 |
| 200 | 74 |
| 230 | 62 |