LISUN ESD-RPB Meltblown cloth electrostatic electret generator is composed of a pin-type electrostatic rod and a high-voltage DC power supply. The high-voltage DC power supply provides high voltage for ion emission, which causes the pin-type electrostatic bar to emit negative (positive) ions, and then charges objects such as melt-blown cloth. According to AATCC42, ASTM F1862-17, ASTM F2299-03 (2017), ASTM F2100-2019, BS EN14683-2019, BS EN 14387-2004+A1 2008, BS EN 136-1998, BS EN 140-1999, BS EN 143-2000 +C1-A1, BS EN 149-2001+A1, etc. It is widely used in non-woven fabrics, printing, film sticking, paint spraying, flocking, sorting and biological engineering and so on.
Because the filtration efficiency of ordinary melt-blown non-woven fabrics is less than 70%, it is not enough to mechanically block the three-dimensional aggregate of fibers that are purely based on melt-blown ultrafine fibers with fine fibers, small voids, and high porosity. Therefore, melt-blown filter materials generally need add electrostatic charge effect to the melt-blown cloth through electrostatic electret process, improve the filtration efficiency through the electrostatic methods, so that the filtration efficiency can reach to 99.9%, a thin layer can achieve the expected standard, and the respiratory resistance is still small.
The current electrostatic electret methods mainly include electrostatic spinning method, pin-type discharge method, triboelectric method, thermal polarization method, low energy electron beam bombardment method, etc. Among them, the pin-type discharge method is the best electrostatic electret method at present.