Industry News

Medical protective mask

2020-04-08


Medical protective mask




Medical protective masks refer to self-absorbent filtering dust-proof medical protective articles that can filter the particles in the air, prevent the transmission of certain respiratory infectious microorganisms, and block droplets, blood, body fluids, secretions, etc.


Introduction


Medical protective mask A mask capable of preventing infection through air-borne diameter ≤5μmg infectious factor or close-range (≤1m) contact with droplet-borne diseases. The use of medical masks includes tightness testing, training, model selection, medical handling and maintenance.


Composition and function


The medical protective mask is composed of a mask face and a tension band. The face mask is divided into inner, middle and outer layers. The inner layer is ordinary sanitary gauze or non-woven fabric. The middle layer is a superfine polypropylene fiber meltblown material layer and the outer layer. Non-woven fabric or ultra-thin polypropylene meltblown material layer. This highly effective medical protective mask is highly hydrophobic and breathable, and has a significant filtering effect on tiny virus aerosols or harmful dust. The overall filtering effect is good, the materials used are non-toxic and harmless, and they are comfortable to wear.


It can prevent infections caused by airborne diameter ≤ 5μmg infectious agents or close-range (≤ 1m) exposure to droplet-borne diseases. The particle filter efficiency of the mask filter should be no less than 95%, and the protection level is high.


Scope of application


Medical protective masks are better protective equipment. It is recommended to wear them when there is serious environmental pollution or medical infectious diseases (such as respiratory infections).


☆ Protect human body from airborne particles
☆ Suitable for protection of medical staff in infectious disease areas
☆ Suitable for protection of virus laboratory personnel
☆ Protection of various personnel during the epidemic
☆ Toxic chemical, mining staff, allergic to pollen

☆ Individual protection of military biochemical weapons


Product specifications


According to the national standard GB 19083-2003 "Technical Requirements for Medical Protective Masks", the sizes of medical protective masks are:
The size of the central part of the rectangular mask after deployment: the length is not less than 17cm, and the width is not less than 17cm;

Dimensions of close-fitting arch mask: horizontal diameter is not less than 14cm, and vertical diameter is not less than 14cm [2].


Important technical indicators


Including non-oily particle filtration efficiency and airflow resistance.


(1) Filtration efficiency: Under the condition of air flow rate (85 ± 2) L / min, the filtration efficiency for aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%, which is in line with N95 (Or FFP2) and above.
(2) Inspiratory resistance: Under the above flow conditions, the inspiratory resistance does not exceed 343.2Pa (35mm H2O).
How to wear
How to wear a head mask
(1) Gently pinch the nose clip and place the mask on your face, making sure to cover your nose and mouth.
(2) The elastic band is fastened on the head to prevent air from entering.
(3) Lower elastic band is tied around the neck and fastened.

(4) Be sure to fully open the mask to minimize the number of layers used during breathing.


How to wear ear-hung masks


(1) Put your nose clip on the upper part with your hands through the earband, and put the mask on your nose and mouth
(2) The earband should be placed at the base of the ear and spread from head to toe so that the folds of the mask are fully unfolded. This helps to cover the face to the maximum and minimize the number of layers required for breathing.

(3) Gently pinch the nose clip to prevent air from entering.



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