Electrostatic shielding protects instruments or work environments within a metal conductor shell from external electric fields and does not affect them. Some electronic devices or measuring equipment require electrostatic shielding to avoid interference. For example, indoor high-voltage equipment is covered with a grounded metal cover or a denser metal mesh cover, and electron tubes are enclosed in metal tubes. Another example is power transformers used for full-wave rectification or bridge rectification, which are shielded by wrapping metal foil or winding a layer of enameled wire around the primary and secondary windings and grounding them. In high-voltage live working, workers wear voltage-sharing suits made of metal wires or conductive fibers, which can provide shielding protection for the human body. In the production process of the electronics industry, there are also products that apply the principle of electrostatic shielding. The following will introduce several types and characteristics of anti-static bags in the electronics industry.

In the production process of the electronics industry, there are also products that utilize the principle of electrostatic shielding. The following will introduce several types of anti-static bags used in the electronics industry.

1) Shielding anti-static sealing bag

It is made of polyethylene and anti-static agent, blow-molded by special machinery. It can be used for packaging of electronic components, PC boards, etc. The surface resistance value is 109-1011Ω.

2) PE red anti-static bag

This anti-static bag is the optimal packaging material for printed circuit boards, ensuring reliable discharge of static electricity generated by the boards and preventing damage. Technical specifications are as follows: compliant with MIL-B-81705B; internal and external surface resistance ranging from 103 to ≤1011Ω; electrostatic discharge time <2 seconds.

3) Anti-static shielding bag

In order to make plastic capable of shielding electromagnetic waves, it is necessary to apply antistatic agents to the plastic for metallization treatment, which yields good shielding effect. Surface resistance: 106Ω-109Ω.

4) Anti-static bubble bag

Anti-static bubble bags and bubble sheets can prevent damage to products caused by collisions or static electricity during production, handling, and transportation. These bags are suitable for packaging electronic products that are sensitive to static electricity.

5) Anti-static and moisture-proof bag

Suitable for the transportation and packaging of high-tech electronic products sensitive to static electricity, such as PCBs and ICs. It features anti-static and moisture-proof functions. The inner and outer layers of the anti-static and moisture-proof bag are made of transparent anti-static materials, while the middle layer is aluminum foil with excellent barrier and conductivity properties, thus providing good anti-static, moisture-proof, and electromagnetic shielding performance. The appearance is silver-white. It is mainly used for the packaging of electronic products that are sensitive to static electricity and require moisture and electromagnetic interference protection.