In the workshop where high-precision devices are produced, when the human body performs various activities, the static voltage value on the clothing will be higher than the electrostatic discharge damage threshold of the electrostatic sensitive device, so it may cause sensitive devices when touching or approaching these components. damage. This requires personnel to wear anti-static clothing at work, the current anti-static clothing on the market has three styles, anti-static big smash, anti-static split suit and anti-static jumpsuit.
Anti-static cockroaches are affordable and easy to wear. They are generally used in clean room production environments where anti-static requirements are not too high and there is no special requirement for cleanliness. For example, in the environment where mobile phone manufacturers produce mobile phone cases, they can wear anti-static shackles.
Anti-static split suit, jacket-style top design, wearable work is more convenient, and the clothes design is relatively simple, but the anti-static split suit is less clean than the jumpsuit, not suitable for the production of high dust-free grade workshop. Usually, it can be worn in a production environment of 10,000 or above, but it is absolutely impossible to wear in the Class 1000 and Class 100 clean rooms, because its cleanliness is far from satisfactory.
Anti-static coveralls, which are divided into hoods and hoodless, hooded anti-static jumpsuits are commonly used, which have good sealing and high cleanliness. It is suitable for use in places with high anti-static and cleanliness requirements. It can be used together with anti-static boots and masks.
The above is just a brief introduction, reminding everyone to consider the following two points in the quality of anti-static clothing:
1) Friction electrification voltage. Anti-static fibers are available in mesh and stripe. The friction voltage of general anti-static clothing is 700-800v; the grid anti-static clothing has a friction voltage of 200-400v.
2) Conductivity of antistatic fiber, the electrical parameter of the conductive fiber in the fabric of antistatic clothing is 10E6--10E9Ω.
Therefore, the wearing environment and the discrimination of the quality of the anti-static clothing need to have accumulated relevant knowledge.