According to the raw materials used, it is divided into three types: silk screen, wire screen and synthetic fiber screen.
Silk screen
According to the specifications, the silk screens of different silk deniers are woven with full skein, semi-skein or plain weave, and the weaving method is similar to the mesh cloth. When the number of meshes is small, the whole skein is used for the structure, and when the number of meshes is large, the semi-skein or plain weave is used. Silk screens have a size of 4 to 62 holes/cm, which are mostly used for screening in the grain industry. They can also be used to screen different coarse and fine sands.
Metal mesh
The metal screen is a mesh product made by a certain technical method. It is woven from copper wire, stainless steel wire, iron wire and steel wire. The wire diameter is mostly 4 to 0.025 mm. Generally, a plain weave, a twill weave, and a mat weave method are used. The metal mesh has clear and correct holes, the mesh surface is flat, and has high temperature resistance and wear resistance. The stainless steel screen can also resist corrosion. Therefore, metal screens are mostly used for powder screening and oil filtration.
Synthetic fiber screen
Synthetic fiber meshes are available in nylon or polyester filaments and brown. The filaments are 15 to 30 denier monofilaments, and the surface of the mesh openings is smooth, which is favorable for filtration. The fabric structure can be used, square and flat, etc., and the specifications are 19 to 104 holes/cm. It is widely used as a printing enamel net, integrated circuit printed circuit board, and can also be used to screen fine particles such as magnets of picture tube phosphors and magnetic powder of magnetic tape. The brown silk screen is made of coarse nylon silk yarn with a diameter of 0.55-0.1 mm. The fabric is mostly plain weave structure, used for beneficiation, filter pulp, conveyor belt and the like. The synthetic fiber screen has the characteristics of no rust, corrosion resistance, etc., and can replace part of the metal mesh.
