Anti-Static vs. Static Shielding Bags

by Andy on August 25, 2010

While “anti-static” and “static shielding” sound pretty similar, there are great differences when it comes to ESD protection. The main difference involves the sensitivity of the component in the bag.

Anti-Static Bags Anti-static bags (pictured to the right) are best used for the packaging of non-static sensitive components that will be transported to a static sensitive environment. These bags prevent static build-up on the bag by dissipating static charges. Blue and pink are the industry’s standard colors used to distinguish these bags.

Static shielding bags (below), on the other hand, are designed to protect static sensitive components from static electricity. These bags have a multi-layer design to provide a Faraday Cage effect, which blocks out external static electric fields. 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.

Moisture Barrier Bags Moisture Barrier bags are a third type that allow for the same protection of static shielding bags, but can also defend the components from exposure to relative humidity. By using a much thicker metal layer, these bags prevent the moisture vapor transmission rate by a factor of over 20 times more compared to regular static shielding bags.

Need a different type of bag? See our full selection of bags and bag sealers.

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