Electrostatic discharge is known to occur when two electrically charged material comes into sudden contact. This results in the build-up of static charges due to the electrostatic induction produced by the materials in contact. This might in-turn cause dielectric breakdown of the components. For electronic devices to be adequately protected, it has to be housed in a material that has static dissipative attributes. Example of such material is static shielding bag which gives effective protection. We have the most common stock sizes.
Metalized PET with Anti-static Coatings
We carry a selection of pouches for various applications. The pouches on this page are designed to prevent the contents from being damaged due to static discharge. These bags are not designed for use with food, and do not provide barriers for water or oxygen. They are solely designed to prevent electronics, medical components, and other items from being damaged by static electricity. This protection is afforded by both the composition of the materials used to make the pouches, as well as the configuration used. It is important to use care with handling the bags as to not create a pinch in the bag that can invalidate the protection being provided by the bag.
Types of ESD shielding bags
- Antistatic bag: They avoid the build-up of electric charges but they cannot protect electronic devices from electrostatic discharge. They are best used to protect non-sensitive parts of the device.
- Static shielding bag: Contrary to the antistatic bag, static shielding bag can adequately protect devices from electrostatic discharges. Therefore, it’s the most used type of ESD shielding bag.
What are the sensitive electronic devices that can be packaged with a static shielding bag?
Some major electronic products that can be packaged with static shielding bag include:
- All forms of printed circuit boards
- Graphics cards
What is Static Shielding
Static shielding bags are made up of metalized layers that give necessary protection to electronics devices. They do this by creating a Faraday cage effect on the device to be protected. Faraday cage functions by simply making the external electrical field to create charges. They are distributed in a manner that annuls the effect of static charge development in the cages’ interior.
Components of static shielding bag
This metalized static shielding bag is made of polyethylene terephthalate (PET) material with four different layers. The inner layer comprises of a static dissipative polyethylene, coated with an Aluminum metal. The inner layer is immediately followed by a layer that is made of polyester. Then a double outer layer that has a static dissipative coating. The four-layer design of static shielding bag gives device both inner and outer protection.
The resistance of this device falls within the range of 1005 – 1015 ohms/sq. and a static decay that is less than 0.05sec. It is a very durable and strong material with a high tensile strength greater than 25lb, 3.0 MILS thickness and high resistance to tribocharging. Static shielding bag also has static shielding greater than 30V and light transmission of 40%.
Importance of static shielding bag
- It’s good for transporting and storing sensitive electronic devices: Some sensitive electronic devices are prone to develop static charges. It’s best to transport and store such devices in static shielding bag to avoid damages.
- It provides adequate protection: Water and oxygen cannot penetrate through the static shielding bag because it is water resistant and air tight. It can also protect devices from the penetration of light due to its silvery surface.
Any electrostatic shielding bag that has spent 2 years after the date of manufacture should not be used because they pose a high danger to the user. And also, its storage temperature should be maintained within a range of 21oC to 23oC.