What characteristics should the dust-free ESD clothing fabrics used in clean rooms have?
What are the characteristics of fabrics that should be used in a clean room? I summarize the following two points for you.
Since dust-free clothing is worn in the clean room, it is necessary that the cloth cannot become a source of dust in the clean room. This determines that ultra-clean cloth can only be produced with chemically synthesized long fibers. Natural short fibers such as cotton, linen, and silk cannot be used in ultra-clean fabrics, although these materials can make the fabrics more wearable. Therefore, dust-free clothing uses 100% polyester filament to reduce the amount of dust generated.
The dust-free clothing fabric must have excellent dust filtration properties. The dust in the clean room mainly comes from the air flowing indoors and the human body moving indoors. When the equipment conditions are determined, improving the cleanliness means controlling the fine dust generated by the human body in the clothes to the maximum extent, allowing it to pass through the fabric and enter the air. This is the so-called dust filtration rate of cloth. The improvement of dust filtration rate is at the expense of the breathability of the fabric. Therefore, knitted fabrics and loosely woven woven fabrics are not suitable for clean rooms.
Dust-free clothing not only has extremely high requirements for itself, but also has strict requirements for cleaning. For specific requirements for dust-free work, the level of purification and cleaning must be consistent with it, otherwise it will be unqualified.