For the medical or civil mask, the meltblown nonwoven fabric is a important role as the filter layer.

The meltblown fabric relies on electrostatic effects to adsorb and capture fine dust particles.
It has the trapping effect of ordinaryfilter materials. 
It can also block PM2.5.

So for the storage,we should try to keep the electrostatic effects well for it.

Melt blown non woven electrets are very sensitive to environmental humidity. 

Someone has done an experiment. He stored the meltblown fabric at the room that with the temperature and high humidity (relative humidity greater than 95%) for 7 days, the surface potential of the positive and negative corona charging samples has decayed to 28% and 36% of the initial value respectively.  

Because the melt-blown non woven fabric (China melt blown material factory)has an open structure, its specific surface area is large, and it has a larger contact surface with the surrounding environment.It will make it more sensitive to moisture, corrosive gases, and heterogeneous charged particles in the environment.

When the sample is stored or operated in a high-humidity environment, a large amount of charge is lost due to the compensation effect of the polar groups in the water molecules and the heterogeneous ions in the atmosphere on the high concentration surface charge on the fiber. Therefore, in the process of transportation and storage of meltblown cloth, high humidity environment must be avoided.

To prevent the static electricity of the melt-blown fabric (medical meltblown fabric manufacturer) from disappearing, we can do it for the below for reference.

1. Stay away from the places with electric potential, such as television, efrigerator, transformer and other electrical appliances.

2.It should not be directly placed on the metal surface and it should be stored at the appliances use insulating materials.

3. We should store it in a cool and dry place to avoid the influence of water vapor on the melt-blown fabric;

4. we can pack the meltblown fabric in single roll PE bag vacuum packaging and store it at the temperature during 18~32℃.

If you want to know more about it (China PP meltblown filter manufacturer), please contact us.