Cleanroom ESD Clothing Cleanliness Management
Cleanrooms use textiles to protect the indoor environment from contamination by the human body (wearer). Each human body sheds 1 billion skin cells daily, and the human body and its clothing carry a large amount of dust, ions, hair, textile fiber lint, cosmetics, fragrances, cigarette fumes, etc., all of which are unacceptable in the production of high-tech products. Cleanrooms use clean materials to maintain clean indoor air and prevent contamination of products such as food, pharmaceuticals, microelectronics, spacecraft components, optical components, and automotive parts. The contamination resistance requirements for textiles vary from industry to industry. Contamination-resistant textiles must also protect wearers from the harmful materials in the cleanroom. For example, environments using solvents in high-purity pharmaceutical production and semiconductor manufacturing can have harmful effects on workers; textiles used in cleanrooms should be lint-free, anti-static, and resistant to contamination by human hair or skin flakes.
Note 1: Parameters for cleanrooms and clean areas with airborne particle cleanliness levels greater than 100,000 are based on the US Federal Standard for Cleanrooms and Clean Areas.
Note 2: Air cleanliness testing is based on static conditions, and the testing methods should comply with the relevant provisions of the "Test Methods for Suspended Particles in Cleanrooms and Clean Areas of the National Pharmaceutical Industry".
Note 3: For cleanrooms with an air cleanliness level of 100, the count of dust particles larger than or equal to 5μm should be performed through multiple samplings. Only when these particles reappear multiple times can the test value be considered reliable.