In scenarios such as solid-liquid separation, dust removal, and chemical slurry treatment, industrial filter cloths are commonly used consumables. The mesh count serves as a fundamental parameter, directly influencing the filtration effect and operational stability. Many purchasing and maintenance personnel often lack clarity on how to interpret the mesh count of filter cloths.

In simple terms, the mesh count of filter cloths usually refers to the number of mesh holes within a 25.4 millimeter (1 inch) length. This parameter is mainly applicable to woven filter cloths. The larger the mesh count, the denser the mesh arrangement per unit length, and the smaller the individual mesh diameter, allowing for the interception of fine particles. Conversely, a smaller mesh count results in larger mesh sizes and lower resistance for fluid passage, suitable for coarse filtration conditions. Many people tend to confuse the concept. The mesh count is actually the number of holes within a linear length, not the total number of holes per unit area. This point requires attention. Additionally, for non-woven filter cloths like needle-punched felts, due to the absence of regular mesh structures, the applicability of the mesh count parameter is limited. Instead, the pore size or air permeability rate are used for description.

When viewing the mesh count of industrial filter cloths in practice, the following points can be considered:

First, confirm the testing standard for the mesh count with the supplier. Internationally, the mesh count is usually calculated based on the number of holes per inch, but some standards or manufacturers may use the number of holes per centimeter. Be aware of unit conversion. After clarifying the standard, you can make horizontal comparisons.

Second, make a comprehensive judgment based on the filtration accuracy. The mesh count is only a reference indicator. What directly determines the filtration effect is the range of particle diameters that the filter cloth can intercept. If the working condition requires the interception of finer dust or impurities, merely looking at the mesh count is not sufficient. It is also necessary to understand the pore size distribution and air permeability rate of the filter cloth.

Third, pay attention to the relationship between the mesh count and air permeability, and resistance. Filter cloths with higher mesh counts have stronger interception capabilities, but the resistance for air or liquid flow through them also increases, potentially affecting the processing efficiency of the equipment. Therefore, when choosing, it is necessary to balance filtration accuracy with operational energy consumption.

Fourth, observe the surface and cross-section of the filter cloth. Using a magnifying glass or microscope, you can roughly check the uniformity of the mesh holes. If the mesh sizes are not uniform, even if the nominal mesh count is the same, actual use may still result in local leakage or blockage.

In summary, the mesh count of industrial filter cloths needs to be viewed comprehensively in conjunction with weaving method, material, filtration accuracy, and actual working conditions. When purchasing, it is advisable to request samples from the manufacturer for small-scale tests or comparative tests. This is more reliable than merely focusing on the mesh count figures. We hope the above content can provide some references for relevant practitioners.

Changzhou Xiahua Environmental Protection Technology Co., Ltd. specializes in the production and operation of industrial filtration materials for many years, mainly in the chemical industry, and the products are exported to many countries. Xiahua mainly produces the filter cloth, filter bag, pressure filter bag, etc., Xiahua filter cloth, use heart!