1, protection performance

Children's protective masks require particle filtration efficiency of not less than 95% and protective effect of not less than 90%; Children's sanitary masks require particle filtration efficiency of not less than 90% and bacterial filtration efficiency of not less than 95%.

2. Comfort performance

Considering the respiratory characteristics of children in the physiological development stage, the expiratory resistance and inspiratory resistance of children's protective masks should not be higher than 45Pa. Children's sanitary masks require ventilation resistance not higher than 30Pa. In terms of the comfort of wearing a mask, the standard recommends the use of an adjustable mask strap.

3. Safety performance.

The mask should be able to cover the mouth, nose and jaw safely and firmly, without touching sharp corners and edges, which can not obviously affect the field of vision: the raw materials of the mask should not use recycled materials and materials that can cause adverse reactions, and should not be bleached with chlorine; For masks equipped with breathing valves, the breathing valves should be firm and not deformed, and internal parts should not fall off; Lace masks should not be used; The nose clip should withstand 20 folds without breaking; The inner material of the mask should not be printed or dyed.

The standard strictly stipulates the residue of harmful substances, and the formaldehyde content is not higher than 20 mg/kg; The printed pattern on the outer layer of the mask shall not fade, and aromatic ammonia dyes that can decompose cancer shall be prohibited; The sterilization residue of ethylene oxide shall not be higher than 2 μ g/g; No migratable fluorescent whitening agent shall be detected.

The standard also stipulates that microbial indicators should meet the requirements of disposable sanitary products.

Step 4 wear safety warnings

The recommended national standard of "Technical Specification for Children's Masks" gives a clear warning of wearing safety for children's masks. For example, children should wear masks under the care of adults, and caregivers should pay attention to observing and educating children to wear masks correctly. Children are not allowed to play or exercise with moderate or above intensity during wearing masks, and the breathing valve and its internal parts are not allowed to be disassembled; If you have symptoms such as respiratory discomfort and skin allergy during wearing, you should take off your mask in time and seek medical advice immediately if necessary. Masks should be changed in time. It is not recommended to reuse the mask after washing, and the used mask cannot be changed. Children with breathing difficulties are not recommended to wear masks. When using a mask, remove items unrelated to wearing a mask, and so on.