우리나라 면체 여과식마스크 성능에 관한 연구

A Experimental Study on the Performance of Filter-integrated Half-masks

This study is conducted to experiment on the performance test for 20 types of Filter-integrated Half-masks which could not only protect workers exposed to dusty environment, but also improve workability. Results and conclusions are as follows ： 1) Respirators that removal efficiency of aerosols is 95 percent or more are 11 kinds(55%), and those who are 99.9 percent or more are 4 kinds(20%). Respirators that inhalation resistance is 4 mm in water or less are 13 kinds(65%), and those who are 6 mm in water or less are 17 kinds(85%). Respirators that efficiency of cumulative inhalation resistance is 100 percent or less are 11 kinds(55%) . 2) Respirators that resistance of moisture inhalation is 6 mm in water or less are 11 kinds(55%). and those who are 10 mm in water or less are 13 kinds(65cio), Respira'tors that ratio of removal efficiency for aerosols between dry and wet conditions is 95 percent or more are 9 kinds(45%). 3) Respirators which are not only 95 percent or more for removal efficiency of aersosls and 6 mm in water or less for inhalation resistance, but also 200 percent or less for efficiency of cumulative inhalation resistance, are 8 kinds(40％). Respirators which are not only 99.9 percent or more for removal efficiency and 6 mm in water or less for inhalation resistance, but also 100 percent or less for efficiency of cumulative inhalation resistance, are 3 kinds(15%). Respirators which are not only 95 percent or more for removal efficiency of aerosols and 6 mm in water or less for inhalation resistance, but also 200 percent or less for efficiency of cumulative inhalation resistance and 10 mm in water or less for resistance of moisture inhalation, are 6 kinds(30％) . 4) As standard rrlodel of artificial human head which would be perhaps different from the true one Is used to experiment fitness test, leakage rate is shown to be more or less high. However, artificial human head shall be accurately examined and follow-up studt. would be conducted in the future.