Masks filter material
For good respirator filter material, should have the following three conditions, one is in the facial mask and users and good filtering under the condition of high efficiency, the second is respiratory resistance is small, 3 it is the user feel comfortable. Dust class material has a variety of masks filter material, including ordinary fabric, animal fur, non-woven, etc. In is very popular in the national standard is a kind of active carbon felt material.
Structure and people face of gauze masks and sex is very poor, many of the great harm to our small particles will enter the respiratory tract through mask and facial aperture to the lungs, its filter material is more commonly mechanical fabric, this kind of filter material to achieve high efficiency of dust, the only way is to increase the thickness, and increase the thickness of the negative effect is to make the user feel breathing resistance is very big, don't feel comfortable. And through electrostatic processing of non-woven fabrics can stop not only large dust particles, and attached to the surface of the electrostatic charges by electrostatic attraction to tiny dust adsorption, achieve high efficiency of dust. And the thickness of the filter material is very thin, greatly reduces the user's breathing resistance, and feel comfortable, so as to achieve the mentioned on our previous good liao three necessary conditions. Have a good filter material, cooperate with mask of scientific design structure, constitutes a highly efficient masks.
Joint effect
Masks must be suitable for size, way of wearing also must be correct, masks will be effective. Selling masks on the market generally divided into rectangle and goblet. The structure of the rectangular masks at least three layers of paper to a protective role. Users to put the mask on the wire on the bridge of the nose, down the bridge of the nose will be the whole mask out again to work efficiency. Can let children wearing surgical masks rectangle, because it has no fixed shape, if well tie, can with the faces of children. Cup mask is to ensure that the mask on the face after sufficient density, breathe out air is not leaked to be effective. When wearing a cup shape face mask, but will try to blow his hands covered with masks, check whether there is air leakage from mask edge, if masks cover is not tight, to readjust the position after worn.