HEPA (High-Efficiency Particulate Air) is a foreign name. There are many kinds of materials for HEPA filters, which can be divided into PP (polypropylene) filter paper, PET filter paper, PP and PET composite filter paper and glass fiber filter paper. Among them, PP (polypropylene) is paper, so it generally cannot be washed. Another part of the HEPA filter uses HEPA air filter paper made of PET or PTFE. This is the origin of many claims on the Internet that water-washable HEPA filters are used, but this type of HEPA filter is less efficient.
Hippa is a very efficient filter that can block very small dust. According to the current European grades, it is divided into G1-G4, F5-F9, H10-H14 and U15-U17. Commonly seen in air purifiers is the H-level filter, which meets the HEPA standard and has an efficiency of 99.7% for 0.1 microns and 0.3 microns. The characteristic of the HEPA network is that air can pass through, but small particles cannot. Long-term use will cause its air permeability to decrease due to clogging of gaps, so it is generally made into a wavy shape to increase the air permeability area.
The HEPA air filter paper currently independently developed and produced is the core material of the HEPA filter. Its production process is similar to that of ordinary filter materials. It is a new type of filter material formed by compounding a layer of PTFE film on the surface. It has excellent steam permeability, corrosion resistance, aging resistance, temperature resistance and other properties. According to the usage requirements, the pore diameter can be between 0.1-5um, the thickness can be between 2-100um, the porosity can reach 50%–80%, there are up to hundreds of millions of micropores per square centimeter, and the filtration grade can reach H13-U17. It can operate at a continuous operating temperature of 240°C and an instantaneous temperature of 260°C.
Suzhou New Material Technology Co., Ltd. is a high-tech enterprise specializing in the research, development and production of fluorine material film technology, dedicated to HEPA air filter paper and higher filtration efficiency materials. It continues to innovate in product R&D and manufacturing, and occupies a dominant position in the market with its unique and stable performance. Interested parties are welcome to enter the store for consultation.
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