Film art unit

摘要

Problem to prevent the ash from leaving when the filter unit of the dust mask is incinerated.The filter unit 3 of the antiseptic mask 1 is disposed opposite to each other, and consists of two sheet like fillers 21, 22 which occupy 100% by weight of the organic fiber as the fiber component, and filter material holding means 26 interposed between these filtering materials, respectively, and the filter materials 21 and 22 are Further, there is provided a means 16 which has an outside air filter chamber 50 which is capable of taking in the outside air and is capable of being ventilated and detachably connected to the harboring 2.