Bringing you to understand about the production process and electrostatic electret equipment of meltblown fabrics topping the 99th grade（1）

 Some electret manufacturers hype, mentioning that the higher the voltage and power of meltblown cloth electret machine, the better the effect. Electrostatic electret machine must ensure the output voltage is stable and ripple is small, through the industrial frequency mains power conversion high frequency output DC as the best way, it is obvious that these bad electret machine manufacturers usually use cheap and large volume of industrial frequency transformer doubling combined with the rectifier to realize, does not change the electrical properties and directly affected by the national grid, such as the voltage of the maximum 10% of the circumferential drop and unpredictable ripple interference, so the greater the voltage and power is not the better, the better. So higher voltage and power are not better.

We need to positive charge to the molecular layer of the meltblown cloth, if the voltage and power is too large, but easy to destroy the molecular layer of the meltblown cloth, so that the static electricity can only be added to the surface of the cloth, static electricity is added to the surface usually 2-3 days will run out. Dalian Jieman Technology Co., Ltd. from the use of electrostatic electret equipment supporting high-voltage DC power supply customers to collect information, usually used in the meltblown cloth electrostatic electret equipment, high-voltage DC power supply voltage selection in the 30-100kV between, according to the molybdenum wire and meltblown cloth fit the distance between the transmission rollers to adjust the electrostatic electrostatic electret equipment supporting the high-voltage DC power supply voltage value, the current selection of 5-20mA between, according to the width of the cloth choose the appropriate electrostatic electret equipment, and the current selection of 5-20mA between, according to the width of the cloth choose the appropriate electrostatic electret. The current should be selected between 5-20mA, and the appropriate current value should be selected according to the width of the cloth.

Second, meltblown cloth electret masterbatch technology analysis

1. Electret masterbatch is divided into organic masterbatch and inorganic masterbatch; 2.

2. Meltblown cloth without electrostatic treatment, 0.3u, the filtration effect of most of the soil machine is only 30-70%.

3. After the electrostatic treatment can reach more than 90, the filtration efficiency of the day to measure more than 90 after a few days fell to 30-80, the cloth itself is very poor.

4. The purpose of increasing the electret masterbatch, so that it does not lose the charge, attenuation slower, so that it achieves the filtration effect.

5. Electret masterbatch organic also have long storage time, inorganic many people can not solve the problem of dispersion. Said 20,000 mesh, most of the level can not meet this requirement, it is best to choose a more formal company electret masterbatch as an additive, but most of the actual production process can not meet this requirement, if not handled well easy to plug the mold head; 6.

6. Electret masterbatch is to store charge, not put masterbatch charge decay fast; 7.

7. Static electricity can not lock the reason: this should be the poor quality of the cloth itself, out of the silk fiber is thicker, rely on electrostatic electret to enhance the filtration effect.

8. Electret masterbatch is the biggest effect is to help us reach the N95 standard of this meltblown cloth storage charge, to extend its effective period! To give the meltblown cloth to do the electret treatment, it is equivalent to us to the meltblown cloth in charging, storage of more electric charge. Electret masterbatch is the battery of our meltblown fabric! .

9. How long does the Meltblown fabric last? Currently, 3M masks are said to have a shelf life of three years, and high quality masks imported from Japan have a shelf life of one year. Do not consider the plugging of the mold, tourmaline method of electret masterbatch preservation time is relatively long, organic polymer fluorocarbon polymer if the proportion of sufficient additions can also be preserved for more than a year, at least a few months.

10. Whether the electret masterbatch is inorganic or organic method, powder dispersion technology is a problem. At present, the organic method is the mainstream, followed by organic + inorganic compounding will be the latest direction, taking into account the blocking mold and attenuation problems.

11.10 micron particles rely on electret adsorption.

Third, the production of meltblown cloth notes

1, Meltblown fabric production process requires temperature stability, the production process temperature is not stable solution, if the original is the contactor control of the best choice of solid-state or SCR control system, SCR can make the temperature in the plus or minus 1 degree, solid-state can make the temperature accurately, but frequent switching so that the heater is easily damaged, the impact on the grid is also very large, the actual use of the SCR than the contactor solid-state energy saving, the heater's The service life of the heater is longer, and the quality of the meltblown fabric is more stable.

2. The air pressure should be stable during production, so it is better to choose the air compressor with air storage tank and frequency conversion.

3. The choice of mold, it is best to choose the hanger-type mold multi-point temperature control is best, the aperture of the spinneret is best not greater than 0.2.

Fourth, the beginning of the production of meltblown fabric manufacturers, it is best to choose a regular brand of    special meltblown material, production after the smooth and then slowly find a suitable manufacturer of meltblown material.