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You are here:Home > Resource Center > Choosing Bag Thickness

micrometer

Plastic Bag Thickness Explained.


Just as important as length and width, it is also important to specify the right bag thickness for the bags you are ordering. Before specifying a bag’s thickness, think about the application.

  • What item(s) will your bag contain? Consider both the size and weight of the item(s). For example, a heavy, medium-sized item would require a thicker bag than a light, large-sized item.
  • Does your bag need to provide protection? If the item is delicate or easily scratched, use a thicker bag.
  • How long will your bag be used? If you want the bag to be reusable, specify a thickness of at least 2 mils (.002”).

What is a Mil?

Bag weight is measured by a micrometer (pictured above). A Mil is a unit of measurement used to describe the thickness of plastic film in thousands of an inch. To provide context, a human hair is about 1 mil. Mils are sometimes listed in decimal format as thousands of an inch.

1 mil = 1/1000 inch or 0.001


The best way to understand the thickness of a Mil is to share some examples of common everyday bags and their associated Mil thicknesses:

  • A grocery store bag is 0.5 mil
  • A dry-cleaning bag is 0.75 mil
  • A bread bag is 1.5 mils thick
  • A freezer bags is generally 1.75 mils
  • A retail shopping bag is usually 2 mils


Choosing the Right Mil Thickness

Use the guidelines below when choosing the Mil thickness of the product you are looking for. Keep in mind that the clarity of a bag is also affected by the thickness. A 4 Mil bag would not be a clear as a 1 mil bag.

Thickness

Protection Level

Uses

1 mil bags

Lightweight

Perfect for packaging of lightweight products, 1 mil bags are an economical choice.

1.5 - 2 mil bags

Lightweight

This is the most commonly used thicknesses for storing, shipping, or displaying everyday items. 1.5 mil – 2 mil bags also offer lightweight protection from dirt and moisture

3 - 4 mil bags

Heavy duty

Heavy duty 3 mil and 4 mil bags protect and support heavy & abrasive items. The offer protection for hardware, nuts, bolts and industrial parts.

6 mil bags

Extra heavy duty

Our toughest stock bags, 6 mil bags offer total protection for the heaviest products. These bags provide extra heavy-duty protection against punctures and tears on bulky items or items with sharp corners.



Still not sure which type to choose for your product?
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