FACE MASK FOR PROTECTION AGAINST BACTERIALOGICAL AGENTS, USE OF MASK (EMBODIMENTS), VALVE FOR FACILITATING BREATHING IN MASK AND SUBSURFACE SEALING LAYER FOR IMPROVEMENT OF HERMETICAL SEALING MASK

摘要

The invention relates to a new mask for the protection against biological agents having additional features to improve the efficiency. The mask is in particular equipped with a filtering layer providing outstanding performances against biological agents, with a high efficiency exhalation valve and with a boundary sealing layer to enhance the seal between mask and face.