Bringing you to understand about the production process and electrostatic electret equipment of meltblown fabrics topping the 99th grade（2）

Fifth, the electret masterbatch electrostatic electret notes, mentioned on the previous page, in this repeat the following points

1, electrostatic electrification can not be selected electrostatic residue in the meltblown cloth electrostatic surface higher than 25KV.

2, if the electrostatic electret is too high voltage will electret masterbatch molecules destroyed, resulting in the beginning of the test when the effect is very good to reach 99, after 1 two days of filtration effect is completely down, the reason is that the electrostatic just too high at the beginning of the destruction of the electret masterbatch, resulting in molecular storage of charge time is not long; 3, must be selected by the positive electric output of the electrostatic electret.

3, must be selected by the positive output of the electret machine as the electrostatic electret, because meltblown fabric manufacturers many people are not clear at the beginning of the production process, the use of the market by the electrostatic spraying machine to change over to the electrostatic electret machine to the electret, the market electrostatic electret machine most for the negative voltage, so it seems to be adsorbed on the surface of the wall of the ability to be strong, in fact, filtering effect is not good; 4, the electrostatic electret machine must be selected by the positive output of the electrostatic electret. 

4. Electrostatic electret machine selection according to the size of the production die head to choose the appropriate electrostatic electret machine, not the higher the voltage the better, the higher the voltage is easy to fire so that the meltblown cloth above the trachoma, it is recommended to choose the 10kV to 100kV electrostatic electret machine is good. The 60kV20mA electrostatic electret high-voltage power supply produced by Jieman Technology has been praised by the industry.

Sixth, to avoid the loss of static electricity above the meltblown cloth

1, all the meltblown cloth on the tape guide stick should be wrapped in rubber or silicone, silicone rubber is most likely to produce static electricity is not easy to take away the static electricity.

2, electrostatic electret machine's negative circuit board from the electret rod is about 1 cm or so, in order not to fire appropriate, negative circuit surface

The surface of negative electrode circuit must be pasted about 1 millimeter silicone skin or rubber skin, so that it will not fire, the static electricity is very strong.

3, static electricity at a temperature of about 60 degrees for the best effect of electrostatic electret, the easiest to store in the meltblown cloth electret masterbatch molecules inside, so that the molecules with a positively charged nucleus is easier to store for a longer period of time, so that the meltblown cloth filtration effect is better.

4, choose a special electret rod, there are many electret machines on the market to choose molybdenum wire as a static generator electret rod, common sense people know that in the static electricity are in the tip of the discharge, so that with the tip of the electret rod voltage is not very high, can be injected into the charge inside the electret masterbatch, so that the masterbatch to maintain a charge for a longer period of time without destroying the molecular structure.

Seventh，Why should we use the positive output electret machine as the electret?

1、Because most of the dust and virus cells in the air are negatively charged.

2、Why the doctors in the hospital have to change the mask every four hours, because the positive charge of the meltblown cloth contacts with the negative charge of the air leading to a decrease in the filtration effect.

3、If we use negative electrically charged electret surface, it seems that the negative charge on the meltblown fabric stays longer, but the actual filtration effect is not as good as that of the positive charge.

Eight, meltblown cloth production workshop

1, due to the quality of production of workers, it is best to have a constant temperature and humidity of the workshop, because the meltblown fabric is very sensitive to temperature, the temperature of the morning, noon and night are adjusted, if the workers do not adjust in time, there will be the production of meltblown fabric quality is not qualified.

2, meltblown cloth production out of the best not to bare, the best with plastic wrap packaging.

3, the conditions of the company's best to do a specialized storage of meltblown cloth electrostatic room.

4, in the transportation process, it is best to make the bottom of the meltblown cloth with wooden brackets or plastic brackets, it is best not to touch the car's floor.

Nine, if the choice of electret masterbatch will often block the nozzle hole, it is best to add automatic screen changer, which can reduce the nozzle hole clogging and uneven thickness problem.

Ten, such as uneven thickness of the material is best to add capacitor pumps