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Static Electricity and Antistatic Products Working Principle

Sep. 10, 2021

Although static electricity is not harmful in and of itself, you can get a violent and dangerous spark when a lot of it builds up and suddenly discharges. This can be enough to cause some very expensive damage if an electronic component is transported and suddenly releases an electric current due to friction. This is where anti-static products can help. Let's take a closer look at how they work!

Antistatic Protective Belt

Antistatic Protective Belt

Where do they come from?

Static electricity and electronics don't mix! Electronic components are usually contained in anti-static bags with warning labels. These bags are smoky silver in color, made of plastic, and mixed with conductive additives. When they are sealed, they form a protective outer shell with no electrical charge inside. As a result, bags like these can effectively protect items in transit.

How anti-static products work

To stop static electricity, you must make sure there is never a chance for electricity to build up. In other words, you must make sure there is some sort of circuit that can harmlessly carry away any electrical charge. Anti-static products do this in a variety of different ways, sometimes physical and sometimes chemical.

Physical methods

You may have seen the little black strips hanging down from the back of your car as it moves, touching the road. The car's metal body is mounted on rubber tires, and as it travels down the road it generates an electrostatic charge and the air rubs against it. Theoretically, strips like these prevent static electricity from building up on the car's body, thereby reducing radio interference, electric shocks when opening the doors and motion sickness. One thing is certain: to do anything useful, they must be connected to both the metal body and touch the ground, forming a circuit between the two.

Static isn't just a problem for moving vehicles; it affects people who move, too. If your floor coverings are made of synthetic fibers, static electricity may be generated every time you walk over them. This is usually nothing to worry about, but if you work in an office with sensitive electronic or computing equipment, it can become a problem. That's why they should be placed in anti-static bags.

Chemical methods

The vast majority of antistatic "devices" are chemical additives or coatings designed to make the material less susceptible to static problems.

Anti-static spray coatings usually consist of a conductive polymer (plastic) and a solvent made from deionized water and alcohol. When the solvent evaporates, it leaves a thin, invisible conductive "skin" on the surface of the object to prevent static build-up.

Adding additives to plastics can solve the problem of static electricity, but it can create other problems in the process. Additives such as carbon black may radically change the color of the plastic, affect its strength, or alter its physical properties in other unhelpful ways. As a result, there is sometimes a trade-off that must be made between making antistatic plastics and ensuring that they still perform well in other ways.

Anti-static aluminum foil bag

Anti-static aluminum foil bag

Our Anti-static Shielding Bag

Our antistatic materials are developed and formulated in-house. Shielding anti-static bags can maximize the protection of electrostatic sensitive parts from potential electrostatic hazards. The outer layer of wear-resistant metal coating and the inner layer of vinyl material are processed through a complex process to achieve perfect electrostatic shielding protection. 

Advantages: good anti-static, moisture-proof, shielding static performance, the appearance of silver gray translucent, the exterior can be printed with beautiful patterns, can see the packaged goods.

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