What are the standards for the dust-free purification workshop of masks?
I believe everyone knows that a mask is a sanitary product that is worn on the mouth and nose to filter the air that enters the mouth and nose. Therefore, the production of masks has strict requirements on the production environment, and the 100,000-level purification pharmaceutical cleanroom can meet the requirements of the mask production environment. What are the standards for the dust-free purification workshop of masks? The mask dust-free workshop project generally goes through three filtration sections: primary filtration, intermediate filtration and high-efficiency filtration, including airflow → primary purification → humidification section → heating section → surface heating section → surface cooling section → medium-efficiency purification → fan air supply → pipeline →Efficiently purify the air outlet →Blow into the room to take away particles such as dust and bacteria →Return air shutters →Primary purification Repeat the above process to achieve the purpose of purification. When the 100,000-class clean room has no special requirements for temperature and humidity, it is best to wear clean work clothes without feeling comfortable. The temperature is generally controlled at 20~22°C in winter, 24~26°C in summer, and fluctuates by 2°C; the humidity in the clean room in winter is controlled at 30-50%, and the humidity in the clean room in summer is controlled at 50-70%. Standard 1: The maximum allowable number of dust particles ≥ 0.5 microns does not exceed 3.5 million, and the number of particles ≥ 5 microns does not exceed 20,000. Standard 2: The maximum allowable number of microorganisms is the largest, and the number of planktonic bacteria does not exceed 500/m; the number of settled bacteria does not exceed 10/Petri dish. Standard three: differential pressure. The pressure difference between clean rooms of the same cleanliness level is the same, the pressure difference between adjacent clean rooms of different cleanliness levels is greater than or equal to 5Pa, and the pressure difference between clean room and non-clean room is greater than or equal to 10Pa (mainly to ensure that the air flows from the clean area to the non-clean area to avoid airflow backflow). Previous: Five methods to control pollution in food purification workshop Next: Door and window structure of purification pharmaceutical cleanroom
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