Analysis of Antistatic Bag Types
The main form of electrostatic hazard in the electronics industry is the sudden and potential failure of components caused by electrostatic discharge, which in turn leads to a decline or failure of the overall performance of the device. 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 to reduce the energy of electrostatic discharge to 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 mainly involves controlling the process and the selection of materials in the process; controlling the dissipation of static electricity mainly involves quickly and safely discharging and neutralizing static electricity. The combined effect of both can potentially keep the static electricity level below the safe limit, thus achieving the purpose of electrostatic protection. The following will introduce several types of antistatic bags used in the electronics industry and their characteristics.
1) Shielded Antistatic Sealing Bag
Made of polyethylene and imported German antistatic agent, blow-molded using special machinery. It is easy to package and can be closed with a simple pinch. It can reduce complicated packaging procedures and can be used for packaging electronic components, PC boards, etc. Surface resistivity: 10⁹-10¹¹Ω. 2) Red PE Antistatic Bag
This antistatic bag is the best packaging material for printed circuit boards (PCBs), reliably releasing static electricity and preventing damage. Technical specifications are as follows: Compliant with MIL-B-81705B; internal and external surface resistance 10³~≤10¹¹Ω; static discharge time <2 seconds.
3) Antistatic Shielding Bag
To enable the plastic to shield electromagnetic waves, it undergoes metallization treatment with an antistatic agent, resulting in excellent shielding performance. Surface resistance: 10⁶Ω－10⁹Ω
4) Antistatic Bubble Bag
Antistatic bubble bags and bubble sheets prevent damage to products caused by collisions or static electricity during production, handling, and transportation. This bag is suitable for packaging static-sensitive electronic products.
5) Antistatic Moisture-proof Bag
Suitable for the transportation and packaging of static-sensitive high-tech electronic products such as PCBs and ICs. It has antistatic and moisture-proof functions. The antistatic and moisture-proof bag has inner and outer layers made of transparent antistatic material, with an inner layer of aluminum foil that provides excellent barrier and conductivity. Therefore, it possesses good antistatic, moisture-proof, and electromagnetic shielding properties, and has a silver-white appearance. It is mainly used for packaging electrostatically sensitive electronic products that also require moisture protection and electromagnetic interference prevention.