How is static electricity generated in PET protective film?

There are three reasons for the static electricity generated by PET protective film. One is the static electricity generated by the contact between the pet protective film and the adhesive, the other is the static electricity caused by friction when our pet protective film is torn apart from the release film, and the other is the static electricity generated when our protective film is torn away from the adhesive.

If the pet protective film produces static electricity, it will become easy to absorb dust, which will shorten the service life and affect the fitting effect. Too much static electricity may also lead to damage to the PCB stickers. The magnetic field generated by static electricity is easy to cause certain interference to electronic products, such as the common phenomenon of flashing screens and ghosts. It may also cause our protective film to bond together in the process of processing, affecting the efficiency of shipment.

What is the electrostatic resistance value of anti-static PET protective film?

Anti-static PET protective film generally has a very important indicator called the electrostatic resistance value, the electrostatic resistance value represents the anti-static effect of the protective film, general electrostatic resistance value we use 10 power ohms as the unit of anti-static PET protective film, smaller the second, on behalf of the anti-static effect of the anti-static pet protective film is better When the electrostatic resistance reaches the power of 10 to the fourth, the PET protective film has the function of conducting electricity. When the electrostatic resistance reaches the power of 10 to the 11th, the anti-static pet protective film has the function of anti-static electricity. When the value is higher than the power of 10 to the 11th, the protective film becomes an insulator.

In our industrial production process, static electricity is a common phenomenon when operating equipment, packaging finished products, and even when the protective film is unrolled.

First, let’s explain what causes static electricity. Static electricity is formed when charges gather on an object or surface. When objects with static electricity contact objects with zero potential (ground objects) or objects with a potential difference, charge transfer will occur, which is the phenomenon of spark discharge we see every day. The three most easy to produce static electricity are 1, triboelectric; 2. Contact separation; 3, induction power.

When the protective film is unrolled, one side of the protective film is separated from the other side, resulting in static electricity. Electrical discharge may occur when conductive objects or persons are close to the protective film. This process is harmless but painful to the electrocute. It may also cause indirect harm, such as affecting electronic equipment or industrial processes. In addition, static electricity tends to stain surfaces with dust, which adversely affects surfaces that need to be protected.

Now, what can we do to reduce or eliminate static electricity?

We recommend two methods: 1. Use electrostatic removal rods; 2. Use metal garlands. Static removal sticks actively remove the charge on the protective film, while decorative garlands containing metal sheets are more economical and can reduce static electricity.