Classification of screens

Speaking of screens, the first thing people think of is metal screens. Because it is the most used in our daily life. However, in terms of different raw materials, screens can be divided into three types: silk screens, metal screens and synthetic fiber screens. Next, the editor will briefly introduce these three types of screens.

Thesilk screen is woven with full skein, half skein or plain weave by selecting mulberry silk of different deniers according to the specifications, and the weaving method is similar to mesh cloth. When the number of meshes is small, use the full hank weave, when the mesh number is large, use the half hank or plain weave. The specifications of the silk screen are 462 holes/cm, most of which are used for screening in the grain industry, and also for screening sand of different thicknesses by the grinding wheel and emery cloth factory.

The metal screen is a mesh product made of metal wires through a certain technical method. Woven with copper wire, stainless steel wire, iron wire and steel wire as raw materials. The diameter of the metal wire is mostly 4 to 0.025 mm. Generally, plain weave, twill weave and mat weave are adopted. The metal screen has clear and correct holes, flat surface, high temperature resistance, wear resistance and other characteristics. The stainless steel screen is also corrosion resistant. Therefore, metal screens are mostly used for powder screening and oil filtering.Synthetic fiber screens are available in nylon or polyester filaments and brown. The filament uses 1530 denier monofilament, and the surface of the screen mesh is smooth, which is good for filtering. The fabric structure can be used, square flat and plain weave, etc. The specifications are 19-104 holes/cm. It is mostly used for printing silk screen, integrated circuit printed circuit board production, and can also be used to screen fine particles such as phosphors for picture tubes and magnetic powder for magnetic tapes. The brown wire screen uses coarse nylon brown wire as the raw material, with a diameter of 0.55 to 0.1 mm. The fabric is mostly a plain weave mat-shaped structure, which is used for ore dressing, filtering pulp, and conveyor belts. Synthetic fiber screen has the characteristics of no rust, corrosion resistance, etc., which can replace some metal screens.