Abstract: A respiratory mask includes a mask fabric body made of a woven fabric having weft yarns and warp yarns, said fabric yarns comprising at least one yarn selected from yarns of a plastically bendable material and elastic yarns or threads.

Abstract: A respiratory mask including a mask fabric body (1), and one or more holding straps (3) for holding the mask body to the face of a user, the mask body being made of a woven fabric having weft yarns and warp yarns, the weft and warp yarns having a count comprised between 10 and 1100 den, the warp density being between 14-130 warps/cm, the weft density being between 12-70 wefts/cm, wherein at least part of the body is provided with a liquid-repellent crosslinked polymer.

Abstract: The present invention relates to method of testing the bacterial filtering efficiency of a fabric, the method including the steps of preparing a solution including bacteria, peptone water and NaCl, feeding said solution including bacteria to a nebulizer, generating an aerosol of said bacterial solution and flowing said solution through a cascade impactor to provide a plurality of bacteria colonies in a plurality of plates present in a plurality of stages of said cascade impactor, characterized in that the concentration of NaCl in the peptone water used to prepare said bacterial solution is in the range of 30 g/L to 150 g/L and in that the temperature of said cascade impactor is in the range of ?15° C. to 15° C.

Abstract: A respiratory mask includes a mask fabric body made of a woven fabric having weft yarns and warp yarns, said fabric yarns comprising at least one yarn selected from yarns of a plastically bendable material and elastic yarns or threads.