Link to Yuanlong Packaging
A network card inside an antistatic bag. A pink static dissipative bag, and a silver conductive bag. Note the two recurring ESD symbolsAn antistatic bag is a bag used for storing electronic components, which are prone to damage caused by electrostatic discharge (ESD).
These bags are usually plastic polyethylene terephthalate (PET) and have a distinctive color (silvery for metallised film, pink or black for polyethylene). The polyethylene variant may also take the form of foam or bubble wrap, either as sheets or bags. Multiple layers of protection are often used to protect from both mechanical damage and electrostatic damage. A protected device can be packaged inside a metalized PET film bag, inside a pink polyethylene bubble-wrap bag, which is finally packed inside a rigid black polyethylene box lined with pink poly foam. It is important that the bags only be opened at static-free workstations.[1]
Dissipative antistatic bags, as the name suggests, are made of standard polyethylene with a static dissipative coating or layer on the plastic. This prevents buildup of a static charge on the surface of the bag, as it dissipates the charge to ground (i.e., whatever other surface it is touching).[2][3] This bridge to ground is achieved with the inclusion of a tallow amine on the bags surface which attracts moisture that can conduct the charge to another surface, or to the atmosphere itself.[4] In this sense, this type is truly 'antistatic' in that it hinders the formation of static charges.[5] It, however, is not resistant to electrostatic discharge; if something else with a charge touches the bag (such as a person's hand), its charge would easily transfer through the bag and its contents.[3] These bags are usually pink or red in color because of the dissipative chemical layer. Black bags also exist, wherein the polyethylene is manufactured containing trace amounts of carbon, forming a partial shield, though not a complete one.[2]
Conductive antistatic bags are manufactured with a layer of conductive metal, often aluminum,[3] and a dielectric layer of plastic[2] covered in a static dissipative coating. This forms both a shield and a non-conductive barrier, shielding the contents from static charge via the Faraday cage effect. These bags are preferred for more sensitive parts, but they also see use in environments where sparks would be hazardous, such as oxygen-rich areas in aircraft and hospitals.[4] Metalized bags are more fragile than their nonmetal counterparts, however, as any puncture compromises the integrity of the shield. In addition, they have a limited shelf life, as the metal substrate can deteriorate over time.[6] These bags are often gray or silver owing to the metal layer, while still being transparent to some degree.[3]
Foam also exists in both pink (dissipative) and black (conductive) varieties, used for storing individual leaded components by piercing the leads into the foam.
[
edit
]
[
edit
]
If you are looking for more details, kindly visit esd aluminum foil zip-lock bag.
[
edit
]
I just had to read through this post to finish chuckling over how argumentative the discussion became over anti-static bags!
I've been working with computers for over 30 yrs now and hardly ever use any anti-static protection for anything. Why? Because the chance of static discharge that would cause such an event is SOOOOO freakin' rare. Unless of course you like to rub your feet on the carpet and poke someone's nose before you start working with your boards or chips.
I've had hundreds of units (mobo's, video cards, memory chips, etc.) laying in drawers, cabinets, shelves, etc. I can pick them up 10 years later, after they've been in 3 or 4 machines even, and they still work just fine. I've shipped umpteen times in bubble-wrap that was discharged by my own hand before packaging. I've stored and shipped items sandwiched between plain foam with no problems, EVER.
Sure, spend the money on overpriced ESD protection if you like, and I would as well, if I needed to protect a very sensitive or pricey item like a high-end motherboard, otherwise.... pfff don't worry so much about something that's probably less common to happen than getting struck by lightning. Yes, I know 10v of electricity are enough to zap a poor 'ol microchip and that we can't even see it ourselves unless it hits around 10k v, but regardless, I've learned that discharging yourself prior to handling and working in an environment that is not conducive to building up static is all you need to concern yourselves with.
I'd love to hear any horror stories of people losing any equipment to static, cuz I have yet to hear one myself.
For more information, please visit shrink film rolls wholesale.