Operating Instructions for Meltblown Cloth Electrostatic Electret Generator

The electret principle of meltblown cloth electrostatic electret generator: the meltblown cloth is mainly made of polypropylene, which is a kind of ultra-fine electrostatic fiber cloth and can capture dust. When the droplets containing pneumonia virus are close to the melt blown nonwoven fabric, they will be electrostatic adsorbed on the surface of the nonwoven fabric and cannot be penetrated. This is the principle of this material to isolate bacteria. After the dust is captured by the ultra-fine electrostatic fiber, it is very difficult to be separated from the dust due to cleaning, and the washing will also damage the electrostatic dust absorption ability. Therefore, this mask can only be used once.

Electrostatic electret, referred to as electret, has the advantages of high efficiency, low resistance, adsorption of extremely small particles, and improvement of purification efficiency of extremely small particles through electrostatic electret filter materials. Electrostatic is an excellent electrostatic electret method at present. The electret will implant electrons into the material through the electret bar to polarize the material, so it can store static electricity for a long time.

Melt blown non-woven fabrics need to add a kind of trace substance called “electret”, which is easy to carry static electricity. The non-woven fabrics can be charged for a long time by applying “corona discharge” to them through the electrostatic electret device.
Electret refers to a dielectric material with the function of long-term charge storage. It has the advantages of high efficiency, low current resistance, anti-bacterial, energy saving, etc. It increases the electrostatic adsorption on the basis of ensuring the physical collision barrier effect of conventional filter materials. Electret treatment makes the filter material fiber charged. Combined with the compact characteristics of melt blown superfine fiber materials, a large number of electrodes are formed between the charged fibers. The charged fibers can not only attract most of the charged particles in the environment like magnets, but also polarize the uncharged particles, thereby adsorbing some pollutants with smaller particle sizes, Even viruses, which are nanoscale materials, can be electrostatic adsorbed or repelled by electric charges.

Use of meltblown cloth electrostatic electret generator:
Step 1: Check the integrity of the instrument before use. Each connecting wire should be free of open circuit and short circuit, and the equipment should be free of cracks.
Step 2: Place the host and the pressure doubling cylinder in the proper position, and connect the power cord, special four core connecting wire and grounding wire respectively. The host grounding wire, voltage doubling cylinder grounding wire and discharge bar grounding wire shall be separately connected to the ground wire of the tested object (i.e. one point grounding). It is strictly forbidden to connect the grounding wires in series with each other. The special grounding wire equipped with the instrument shall be used.
Step 3: Place the power switch at the off position and turn the voltage regulating potentiometer counterclockwise to zero. The setting value of overvoltage protection is generally 1.1 times of the test voltage.
Step 4: Before turning on the power switch on the panel of the control box, make sure that the static electret generator of the meltblown cloth is connected to the 220V AC power supply, carefully check whether the wiring is correct, and also check whether the grounding wire of the high-voltage discharge rod is reliable.

Precautions for meltblown cloth electrostatic electret generator:
1. Most of the products are high-voltage test equipment, which is required to be used by high-voltage test professionals. Before use, carefully read the operating instructions and receive repeated operation training.
2. The number of operators shall not be less than 2. During use, the safety operation procedures related to high-voltage test of the unit shall be strictly followed.
3. In order to ensure the safety and correctness of the test, in addition to being familiar with the product manual, the test operation must be carried out in strict accordance with the relevant national standards and procedures.
4. All connecting wires shall not be connected incorrectly, especially the grounding wire. Otherwise, the test device may be damaged.
5. When the device is used, the output voltage is high voltage or ultra-high voltage, which must be reliably grounded. Pay attention to the safe operation distance.

Lisun lanuched 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.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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