Thread count, mesh count, and micron (μm) are all units used to describe the surface smoothness of items and the density of fiber fabrics. The following are some common conversion relationships between them:
Thread count: Indicates the density of yarn within one inch (2.54 cm) length, often used to measure the density and softness of fabrics. The higher the thread count, the denser the fabric and the better the quality. The number of threads is recorded as "T" or "TC" (Thread Count), for example, 400TC means that there are 400 yarns per inch of length.
Mesh: Indicates how many mesh holes are in each inch, and is often used to describe the thickness of screens, filter paper, etc. The number of mesh is recorded as "Mesh", for example, 150 mesh means that there are 150 mesh holes per inch.
Micron: Indicates the unit of length, that is, one millionth of a meter, and is often used to describe the smoothness of the surface of an item. 1 micron is equal to 0.001 mm.
The following are some conversion relationships between them:
The conversion relationship between the number of lines and the number of meshes:
T = 25.4 / (line spacing); where the line spacing is the distance from the center of each mesh to the center of the next mesh, in millimeters.
Mesh number = 25.4 / (hole pitch); where the hole pitch is the distance from the center of the mesh to the center of the adjacent mesh, in millimeters.
The conversion relationship between the number of lines and microns:
T = (1000 / yarn diameter) * 2; where the unit of yarn diameter is micron.
Yarn diameter = 1000 / (T/2); where T is the number of threads.
The conversion relationship between mesh and micron:
Aperture = 1000/mesh; the unit of pore diameter is micron.
Mesh = 1000 / pore size; where the unit of pore size is micron.
Beichao reminds you: the above conversion relationship is for reference only, the actual situation may be different, and there may be other units and conversion relationships.
