FIELD: items for personal use.
SUBSTANCE: mask respiratory unit is made without corrugations from one multilayer flat blank. In particular, polypropylene nonwoven spunbonded-type material can be used for the outer layers, and the electrified polypropylene melt blown-type material is used for the inner layers. The masks respiratory unit consists of the mirror symmetric top, middle and bottom parts, separated one from the other by the suture lines, fastening between each other the material layers, and is equipped with the vertical, dividing it in halves in all three parts, the overall fold. The fold provides the ability to fold the mask into the flat package and the ability to deploy it into the open convex configuration. The mask is equipped with the means of attaching it to the face. The filtering medical mask differs from the known analogues in that the general vertical fold in the top part of the respiratory unit is formed by the material layers bending, and in the bottom part it is formed by two mirror-symmetrical interconnected rounded edges of the bottom part of the blank and stepless interfaced with its middle part, which is formed by connected between each other two mirror-symmetrical edges of the blank middle part.
EFFECT: medical staff and the population protection from bacterial and viral infections, as well as from dust and other atmospheric pollution.
17 cl, 5 dwg
