Introduction of anti-static bag for clean room
The main form of electrostatic hazard in the electronics industry is the sudden failure and potential failure of components caused by electrostatic discharge, which in turn causes the degradation or failure of the entire machine. Therefore, the main purpose of electrostatic protection and control should be to control electrostatic discharge, that is, to prevent the occurrence of electrostatic discharge or reduce the energy of electrostatic discharge below the damage threshold of all sensitive devices.
In principle, electrostatic protection should be carried out from two aspects: controlling the generation of static electricity and controlling the dissipation of static electricity. Controlling the generation of static electricity is mainly to control the process and the selection of materials in the process; controlling the dissipation of static electricity is mainly to quickly and safely discharge static electricity. Discharge and neutralize; the result of the combined effect of the two makes it possible to make the electrostatic level not exceed the safety limit, and achieve the purpose of electrostatic protection. The following will introduce the types and characteristics of several anti-static bags in the electronics industry.
1) Shielding anti-static sealed bag
It is made of polyethylene and anti-static agent imported from Germany, blow-molded by special machinery. It is easy to pack and close with a pinch with your fingers. It can reduce complicated packaging procedures for you, and can be used for packaging electronic originals, PC boards, etc. The surface resistance value is 109-1011Ω.
2) PE red anti-static bag
The anti-static bag is the best packaging material for printed circuit boards, which can reliably release the static electricity generated by the printed circuit boards and avoid damage. The technical indicators are as follows: conform to MIL-B-81705B; internal and external surface resistance 103~≤1011Ω; electrostatic discharge time <2 seconds.
3) Anti-static shielding bag
In order to shield the plastic from electromagnetic waves, it is necessary to metalize the plastic with an antistatic agent, which has a good shielding effect. Surface resistance: 106Ω－109Ω
4) Anti-static bubble bag
Anti-static bubble bag and bubble sheet can prevent the product from being damaged by collision or static electricity during production, handling and transportation. This bag is suitable for packaging electronic products that are sensitive to static electricity.
5) Anti-static and moisture-proof bag
It is suitable for the transportation and packaging of high-tech electronic products such as PCB and IC that are sensitive to static electricity. It has anti-static and moisture-proof functions. The inner and outer layers of the anti-static moisture-proof bag are made of transparent anti-static materials, and the middle layer is aluminum foil with excellent barrier properties and conductivity, so it has good anti-static, moisture-proof, electromagnetic shielding properties and silver-white appearance. Mainly used in the packaging of electronic products that are sensitive to static electricity and need to be moisture-proof and anti-electromagnetic interference