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The anti side leakage design of mask is to prevent air from being inhaled through the gap between mask and human face without filtering. Air is like water flow. It flows to where the resistance is small. When the shape of the mask is not close to the face, the dangerous objects in the air will leak from the non close place and enter the human respiratory tract. Well, even if you choose a mask with the best filter material. Nor can it protect your health. Many foreign regulations and standards stipulate that workers should regularly test the tightness of masks. The purpose is to ensure that workers choose masks of appropriate size and wear masks according to the correct steps. For the filter material of a good protective mask, the following three conditions should be met: first, the filter efficiency is high when the mask is well sealed with the user's face, second, the respiratory resistance is small, and third, the user feels comfortable. There are a variety of materials such as ordinary woven fabrics and animal dust masks. What is very popular in the national standard is a kind of activated carbon felt material. The structure of gauze mask has poor tightness with human face. Many fine particles that do great harm to us will enter the respiratory tract and lungs through the gap between mask and face. Its filter material is generally some mechanical fabrics. The only way to achieve high dust prevention efficiency is to increase the thickness, and the negative effect of increasing the thickness is to make users feel great respiratory resistance and uncomfortable. The electrostatic treated non-woven fabric can not only block large dust particles, but also the electrostatic charge attached to its surface can adsorb the fine dust through electrostatic attraction, so as to achieve high dust prevention efficiency. The thickness of the filter material is very thin, which greatly reduces the respiratory resistance of users and feels comfortable, so as to meet the three necessary conditions of good filter material mentioned above. With good filter material and scientifically designed mask structure, an efficient and high-quality mask is formed.

Disposable face masks are made of more than three layers of 28g non-woven fabrics; The bridge of the nose is made of environment-friendly all plastic strip, which does not contain any metal. It is equipped with breathable and comfortable. It is especially suitable for electronic factories and daily life. Disposable mask (medical surgical mask) can prevent respiratory tract infection to a certain extent, but can not prevent haze. When purchasing, it should be noted that the mask with the words "medical surgical mask" clearly marked on the outer package should be selected. Disposable three-layer mask is made of two layers of non-woven fabric and filter paper; The disposable three-layer mask is made of two layers of fiber non-woven fabric professionally used for medical and health, with an additional layer in the middle. The filter spray cloth with more than 99% bacteria prevention is welded by ultrasonic. The bridge of the nose adopts environment-friendly all plastic strip, which does not contain any metal. It is equipped with steam permeability and comfortable. The filtering effect of b.f.e is up to 99%, especially suitable for electronic factories; The disposable activated carbon mask is made of 28g non-woven fabric on the surface and 99% bacteria proof filter paper on the first layer in the middle, which plays a role in preventing bacteria and virus harm; The second layer in the middle is made of new high-efficiency adsorption and filtration materials – activated carbon fiber and activated carbon cloth, which has the effects of anti-virus, anti odor, bacterial filtration and dust prevention; The disposable mask is made of environment-friendly full plastic nose bar, and the nose clip design can be adjusted most comfortably according to different face shapes. The inner covering ultrasonic spot welding is selected, and the ear belt can be very firm and not easy to fall.