How to choose a mask? What is the difference between a mask with a breathing valve and one without one?

I believe that in recent years, everyone has become accustomed to wearing masks when going out, but to be honest, many friends are not very clear about what kind of masks should be worn in what occasions. So how should we choose masks on weekdays? Can masks containing meltblown fabrics prevent viruses? What is the difference between masks with breathing valves and those without? Let's learn about the common sense of masks.

Contents of this article

1. How to choose a mask

2. What is the difference between a mask with a breathing valve and one without one?

3. Can masks containing meltblown fabrics protect against viruses?

How to choose a mask

If you go to crowded public places, such as subways, stations, supermarkets, general medical institutions, etc., it is recommended to wear disposable ordinary medical masks. Staff in crowded places, police officers, prosecutors, couriers, people in home quarantine, general outpatient medical staff, etc. who are related to epidemic work need to use medical surgical masks.

Clean your hands before wearing a mask.

When wearing a mask, it should completely cover the mouth, nose, and jaw, and press the metal strip from the inside to the outside on both sides of the nose bridge to make the mask fit completely against the face.

Avoid touching the light-colored surface of the mask with your hands while wearing it. When taking off the mask, pull the strap to avoid touching the outside of the mask with your hands.

Masks cannot be worn on both sides alternately. If the mask is not deformed, damaged or contaminated, it can be hung separately in a ventilated place to dry after taking it off. It can be reused without the need for alcohol disinfection.

Wearing one layer of disposable medical surgical masks can effectively prevent respiratory infectious diseases, and there is no need to wear two layers.

What is the difference between a mask with a breathing valve and one without?

The differences between masks with breathing valves and masks without breathing valves include the difference in breathing ease, the difference in applicable time, and the difference in price. Masks with breathing valves are relatively smoother when breathing, while masks without breathing valves are more stuffy when breathing, and water vapor is easily generated inside the mask.

Masks with breathing valves are mainly used for industrial dust and haze protection and are not suitable for medical institutions.

Masks without breathing valves are suitable for wearing for short periods of time, such as when going out shopping or buying groceries.

The price of masks with breathing valves will be relatively expensive.

Can masks containing meltblown fabrics protect against viruses?

Masks containing meltblown cloth can prevent viruses. Meltblown cloth is the main raw material for the current N90/N95/N99 masks. Meltblown cloth is a cloth produced with polypropylene as the main raw material. Because the fiber diameter of polypropylene is small, the produced meltblown cloth can play a good filtering role.

Meltblown cloth has excellent filtering, shielding, thermal insulation and oil absorption properties.

Meltblown cloth can be used in the fields of air and liquid filtration materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wiping cloth.

Medical masks and N95 masks are composed of spunbond layer, meltblown layer and spunbond layer, among which the spunbond layer and meltblown layer are both made of polypropylene PP material.