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What is the working principle of anti-static shielding bags?

Electrostatic shielding ensures that instruments or working environments inside metal conductor shells are not affected by external electric fields, nor do they have any impact on external electric fields. Some electronic devices or measuring equipment require electrostatic shielding to avoid interference, such as grounded metal covers or denser metal mesh covers on indoor high-voltage equipment covers, and metal tube casings for electronic tubes. For example, in power transformers that perform full wave rectification or bridge rectification, a metal foil or a layer of enameled wire is wrapped between the primary and secondary windings and grounded to achieve shielding effect. In high-voltage live work, workers wear uniform clothing woven with metal wire or conductive fibers, which can provide shielding and 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.

 

1. Shielded anti-static sealing bag

It is made of polyethylene and anti-static agent imported from Germany, blown by special machinery. It is easy to package and can be easily closed with just a pinch of your finger. It can reduce complex packaging procedures for you and can be used for electronic components, PC boards Waiting for packaging. The surface resistance value is 109-10119.

 

2 PE red anti-static bags

This anti-static bag is the best packaging material for printed circuit boards, which reliably releases the static electricity generated by the printed circuit board and avoids damage. The technical specifications are as follows: compliant with MIL-B-81705B; Internal and external surface resistance 103~10112; Static discharge time<2 seconds.

 

3 Anti static shielding bags

In order to shield plastic from electromagnetic waves, anti-static agents should be used to metalize the plastic, which has a good shielding effect. Surface resistance: 106Q-109Q

 

4 Anti static Bubble Bags

Anti static bubble bags and bubble sheets can prevent products from being damaged due to collisions 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

Suitable for the transportation and packaging of high-tech electronic products such as PCBs and ICs that are sensitive to static electricity. It has anti-static and moisture-proof functions. The anti-static inner and outer layers are composed of transparent anti-static materials, and the middle layer is aluminum foil with excellent barrier and conductivity, thus possessing good anti-static, moisture-proof, and electromagnetic shielding properties. Mainly used for packaging electronic products that are sensitive to static electricity, moisture-proof, and electromagnetic interference.