A. Muaj ntau hom kev kho mob lub qhov ncauj qhov ntswg, thiab cov qhov ncauj qhov ntswg kho mob yog cov uas tsis yog-woven cov qhov ncauj qhov ntswg pov tseg, gauze qhov ncauj qhov ntswg, thiab tshwj xeeb antiviral qhov ncauj qhov ntswg.
1. Cov qhov ncauj qhov ntswg uas tsis yog-woven pov tseg, muaj ntau tshaj peb txheej, tuaj yeem cais cov kab mob thiab cov plua plav, thiab siv pov tseg thiab txhim khu kev qha, tsis muaj kev pheej hmoo ntawm kev kis kab mob thib ob.
2. Gauze lub qhov ncauj qhov ntswg yog hom lub qhov ncauj qhov ntswg uas tau siv tas mus li, thiab cov npog ntsej muag yog siv dav hauv kev kho mob thiab kev tshawb fawb tshawb fawb.
3. Antiviral qhov ncauj qhov ntswg yog tsim los ntawm cov ntaub ntawv tshwj xeeb, nrog cov txheej lim hauv nruab nrab, thiab cov txheej lim dav dav yog qhib cov pa roj carbon zoo lossis cov ntaub nplaum. Nws muaj cov nyhuv ntawm sterilization thiab sterilization.
B. Raws li cov yam ntxwv ntawm kev ua tau zoo thiab cov peev txheej ntawm daim ntawv thov, lub qhov ncauj qhov ntswg kho mob tuaj yeem muab faib ua: lub qhov ncauj qhov ntswg tiv thaiv kev kho mob, lub qhov ncauj qhov ntswg kho mob, thiab lub ntsej muag kho mob zoo tib yam.
1. Kho qhov ncauj qhov ntswg tiv thaiv
Raws li GB19083-2003 "Technical Requirements for Medical Protective Masks" tus qauv, cov kev qhia tseem ceeb suav nrog cov tsis muaj roj particle pom kev ua haujlwm thiab airflow tsis kam:
(1) Pom kev ua haujlwm zoo: Nyob rau hauv qhov xwm txheej ntawm huab cua ntws (85 ± 2) L / min, pom kev ua haujlwm ntawm aerodynamic nruab nrab txoj kab uas hla (0.24±0.06) μm sodium chloride aerosol tsis tsawg dua 95%, uas yog, nws ua tau raws li qib N95 (lossis FFP2) thiab siab dua.
(2) Inspiratory resistance: Raws li cov dej ntws saum toj no, qhov inspiratory kuj tsis tshaj 343.2Pa (35mmH2O).
2. Kev kho mob qhov ncauj qhov ntswg
Raws li YY 0469-2004 "Technical Requirements for Medical Surgical Masks" tus qauv, cov kev qhia tseem ceeb suav nrog kev pom kev ua haujlwm zoo, cov kab mob pom kev ua haujlwm thiab ua pa ua pa:
(1) Pom kev ua haujlwm zoo: nyob rau hauv qhov xwm txheej ntawm huab cua ntws (30± 2) L / min, pom kev ua haujlwm ntawm aerodynamic nruab nrab txoj kab uas hla (0.24±0.06) μm sodium chloride aerosol yog tsis tsawg tshaj li 30%;
(2) Bacterial filtration efficiency: nyob rau hauv cov xwm txheej, qhov pom kev ua haujlwm ntawm Staphylococcus aureus aerosol nrog qhov nruab nrab particle txoj kab uas hla ntawm (3 ± 0.3) μm tsis tsawg dua 95%;
(3) Ua pa tsis kam: Nyob rau hauv cov xwm txheej ntawm kev ua kom pom kev ua haujlwm thiab ntws tus nqi, qhov kev ua pa tawm tsis tshaj 49Pa, thiab lub sijhawm ua haujlwm tsis dhau 29.4Pa.
3. Tej qhov ncauj qhov ntswg kho mob
Raws li cov txheej txheem sau npe cov khoom lag luam (YZB), kev pom kev ua haujlwm zoo rau cov kab mob thiab cov kab mob feem ntau tsis muaj, lossis cov kev pom zoo rau cov kab mob thiab cov kab mob qis dua cov qhov ncauj qhov ntswg kho mob thiab daim npog qhov ncauj tiv thaiv kev kho mob.