Disposable surgical masks are the best choice for lung protection
surgical mask Used to cover the user's mouth, nose and downdip, microorganisms, body fluids, in order to prevent pathogens directly through the physical teaching content, etcScreen degrees.
Melt-blown fabric
Melting spray cloth is a filtration material with polypropylene as the main raw material.
The diameter of the fiber can reach 1 ~ 5 microns. These ultrafine fibers with unique capillary structure increase the number and surface area of the fibers per unit area, so that the melt spray cloth has good filtration, shielding, insulation and oil absorption.
Main filter material: such as polypropylene melting spray cloth.
Other materials: metal (for nose clip), dye, elastic material (for mask belt), etc
Particle filtration efficiency≤30%Bacterial filtration efficiency≤95%≤49PaExpiratory resistance≤29.4Pa
YY0469 requires bacterial filtration of surgical masks:
Generally, the filtration efficiency of non-oily particles should be above 30%, and that of bacteria should be above 95%