Poly Bags

Poly bags are a type of packaging made of thin plastic used to transport goods. The “poly” in their name comes from the fact that they’re often made from polyethylene (a common form of plastic). They’re a staple for shipping goods around the world due to being lightweight and low cost compared to boxes.

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Bag Bottom

style

Typically flat – signifying that the bottom of the bag is sealed off.

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Bag Closure

style
  • None/Open - poly bag has no closure and is completely open on one end.
  • Zip Seal - poly bag has a zip seal closure to fully seal the bag.

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Depth

dimension

The overall depth of the bag from edge to edge.

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FDA Compliant

certification

If FDA compliant, the bag adheres to higher plastic purity standards so that it can be used in food packaging without being harmful to humans.

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Features

style
  • Antistatic - protect electronics from electrostatic discharge and debris. Typically colored to indicate antistatic property. 
  • Chipboard Header - attached to durable header with perforations for easy tearing. Typically hung from a wall or stand.
  • Volatile Corrosion Inhibiting (VCI) - protect metal from rust and corrosion during storage and transportation.
  • Doorknob - include a pre-cut hole for hanging on a doorknob. Typically used in hotels.
  • Flat - sealed bottom with open top.
  • Puncture Resistant - protect products from damage due to punctures.
  • UV Protective - protect light-sensitive items from ultraviolet (UV) damage.

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Length

dimension

The overall length of the bag from edge to edge.

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Material

performance
  • Polypropylene (PP) - protect items from moisture, gases, and debris. Typically clear.
  • Foil - high resistance to punctures and tears. Typically bright or reflective.
  • High density polyethylene (HDPE) - high resistance to punctures and tears. Can be used for heavy-duty products.
  • Linear low density polyethylene (LLDPE) - easier to tear. High resistance to punctures. Lower clarity than LDPE.
  • Low density polyethylene (LDPE) - easier to tear. Can be used for lightweight items. Typically clear.

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Thickness

dimension

The thickness of the bag - typically measured in mils.


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Width

dimension

The overall width of the bag from edge to edge.

Frequently Asked Questions

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We’re always working to improve the quality of our knowledge base. If there’s anything you think we’re missing or needs changing on this page, let us know.

What are poly bags used for? 

Poly bags are used for shipping and packing a variety of different products from food to electronics. The type of poly bag you choose to go with will ultimately depend on what you want to put inside of it. For example, if you’re dealing with heavier items, you might want to opt for high density polyethylene. See “Materials” and “Features” above to learn more.

What is wrong with poly bags? Are poly bags good? Are poly bags eco friendly? 

One thing to take into consideration is that since poly bags are made of plastic, they have a pretty significant impact on the environment from their production process all the way through disposal. Fortunately, there are some eco-friendly options that exist like recycled plastic poly bags.

What does "poly" mean in poly bags? Does "poly" mean plastic? 

"Poly" is short for polyethylene - a common type of plastic.

What are poly bags made of?

Generally speaking, poly bags are made from polyethylene, but there are a variety of materials you can choose from. See “Materials” above to learn more.

What are the types of poly bags?

See “Materials” and “Features” above to learn more.

What are the advantages of poly bags?

The answer will ultimately depend on the material and features you opt for – see “Materials” and “Features” above to learn more.

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