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Home / Company / Recent News / Anti-Static Bags or Static Shielding Bags, Which Do You Need?

September 10, 2017

Anti-Static Bags or Static Shielding Bags, Which Do You Need?

anti-static Pink Poly Anti - Static Bags are not ESD bagsAnti-static and static shielding seem to be used interchangeably everywhere. Even Wikipedia offers the terms up as close synonyms, but there are huge differences between anti-static and static shielding materials that you should know about.

Anti-static materials help prevent the build up of static electricity. The material itself will not generate or hold a triboelectric charge, so it will not be a carrier that introduces static into a static controlled environment. These materials DO NOT protect from electrostatic discharge (ESD).  Anti-static bags and materials are ideal for packaging non-static sensitive parts used in electronics manufacturing, like nuts and bolts or manuals. Pink poly anti-static bags should never be used as the only packaging to protect electronic components from electrostatic discharge.

static shielding bags - ESD bagsStatic shielding materials prevent the build up of static electricity (they have anti-static properties) AND they protect from electrostatic discharge. These multi-layer materials create a Faraday Cage protecting components from ESD. The inner layer is a static dissipative polyethylene surrounded by a layer of aluminum shielding. The next layer is made of polyester, with an outer layer made of a static dissipative coating. Unlike anti-static bags, static shielding bags protect components from static charges both inside and outside of the bag. In order to provide ESD protection, material is fashioned into a bag or enclosure of some sort and products are sealed inside the bag. No seal, no guarantee of protection. And be sure to pad sharp components and don’t use staples. They can compromise the static shielding properties of the bags.

EMI-RFI Bag - ESD Bag - Static Shielding - MIL-PRF-81705 Type IAnother class of static shielding bags are moisture vapor barrier (MVB) shielding bags.  These materials shield from electromagnetic interference (EMI) as well as radio frequency interference and static. This is mainly accomplished by using a much thicker metal layer , which inhibits the moisture vapor transmission rate (MVTR) by a factor of over 20 times more compared to ordinary shielding bags.

So what do you need? It depends on your products and where you are sending them. The US military requires all electronic components (circuit boards, hard drives, sound cards, etc) to be packaged in materials that meet the stringent specifications of MIL-PRF-81705, which is a static shielding material. If you are not shipping or storing electronic components or items that can be damaged by static, but your products may be shipped to an area that is static controlled, you can get by with the pink poly, anti-static material.


Call to order ESD bags with anti-static AND static shielding properties at 1-800-644-4032, or order rolls of ESD material online.  We have some overstock ESD bags here for purchase & immediate shipment.


OVERSTOCK STATIC SHIELDING ESD BAGS – BUY ONLINE – Call to custom order any sizes not listed

  • Sale! ESD Bags to protect static sensitive components

    Opaque Static Shielding Bags, ESD Bags, 3.25 Mil Thick

    $6.99 $4.00
    Select Size
  • Sale! flat static shielding bags with open top

    Transparent Static Shielding Bags, ESD Bags, 3 Mil Thick – Pack of 100

    $1.89 – $16.99
    Select Size

Article by Anita Pinkerton / Recent News

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