face masks for sale | Classification of protective masks
1. Daily protective mask
The mask body of the daily protective mask is made of filter material, and the wearer relies on spontaneous breathing to overcome the resistance of the filter material to the airflow, so it is called a self-priming filter respirator. When inhaling, the low air pressure in the mask causes airflow into the mask; when exhaling, the air pressure in the mask is higher than the ambient pressure, and the airflow is discharged through the mask. When the filter material of the mask meets the requirements of the standard, and the mask is sufficiently close to the user’s face, most of the inhalation airflow will be filtered by the filter material. Daily protective masks cannot be 100% close to the human face.
This is affected by many factors such as the shape of the face, the smoothness of the skin, and whether there are hairs under the mask. Most of the particulate matter inhaled by wearing daily protective masks comes from leakage, so the tightness of daily protective masks is the key to ensuring the effectiveness of high-efficiency filters. In order to reduce leakage, daily protective masks must be designed with a solid structure, and a certain pressure is applied by the headband and nose clip to make the mask fit closely to the face.
Daily protective masks are mainly divided into two categories: dust face masks for sale and gas masks.
Dust mask: It is a mask with the ability to protect against harmful dust aerosols. Dust masks are generally cup-shaped, which can effectively fit on the mouth and nose to achieve the effect of dust prevention. Dust masks are usually used to block dust or exhaust gas and cannot filter out germs.
Anti-virus mask: It is a respiratory protective equipment used to protect the respiratory organs from toxic biological warfare agents and radioactive dust.
2. Medical protective mask
Medical protective masks are composed of a mask body and a tension band. The mask body is divided into three layers: inner, middle and outer. The inner layer is ordinary sanitary gauze or non-woven fabric, the middle layer is ultra-fine polypropylene fiber meltblown material layer, and the outer layer It is a layer of non-woven fabric or ultra-thin polypropylene meltblown material. This high-efficiency medical protective mask has strong hydrophobic and air permeability, has a significant filtering effect on small virus-carrying aerosols or harmful dust, and has a good overall filtering effect. The materials used are non-toxic and harmless and comfortable to wear. It can prevent infections caused by airborne infectious agents ≤ 5μmg in diameter or close (≤ 1m) contact with droplet-borne diseases. The particle filtration efficiency of the face masks for sale filter material should not be less than 95%, and the protection level is high .
The scope of application includes:
1.Protect the hazards of suspended particles in the air to the human body
2.Suitable for the protection of medical staff in infectious disease areas
3.Suitable for the protection of virus laboratory personnel
4.Protection of various personnel during the epidemic
5.Toxic chemistry, mine workers, pollen allergies
6.Individual protection of military biological and chemical weapons