| 摘要 |
PURPOSE: To prevent diffusion of pathogens brought by vaporized particle of the body fluid by composing the mask base of layers of several perforated layers and arranging a sterilizing part around the central part between a front and a reverse so as not to touch the skin of a user. CONSTITUTION: Face mask 10 has a mask base 11 composed of appropriate porous material sheet made of either porous papers, open cell foamed plastic, nonwoven porous material, woven cloth, gauze, plastic-impregnated gauze, layered plastic impregnated gauze or plastic material made of such layers. The mask base 11 has an extent appropriate to apply the nose and mouth of a mask user, of which central part is impregnated or coated with a chemical compound and/or biological medicine, further provided with a covered sheet containing the medicine to sterilize bacteria and/or virus passing through the mask when in use. The inner wall of the part 12B or a circular non-perforated plastic film would prevent laying chemical compounds from touching the face of the user in case the whole mask base 11 includes the medicine. |
