Currently, MIL-PRF 131 is broken out into three categories, or classes: 

• MIL Class 1- Plastic backing (non-woven) 

• MIL Class 2- Kraft  backing (limited use) 

• MIL Class 3- Scrim backing (woven fabric) 

MIL Class 1 is by far the most widely used and popular class for MIL-PRF 131 packaging, but CarePac offers packaging that can comply with all three classes. It’s important to note that the roll material itself has to be made by a company that’s approved by the DoD, and only two companies have this approval: Berry Global and Cadillac Packaging. As such, pretty much all our bags are constructed using materials from Berry Global and Cadillac Packaging.

MIL-PRF 131 Class 1 is a stretch film that’s used for packaging things that need protection from moisture and other environmental factors. Bags that are compliant with MIL-PRF 131 must adhere to certain strength and durability requirements. They must also resist exposure to chemicals and various other environmental hazards.  These MIL films are Grease proof, water vapor barrier, and heat-seable.

Due to these characteristics, MIL-PRF 131 pouches are typically used to package sensitive military equipment, like computerized devices and guns. These bags meet very strict standards, and the products they package are all but guaranteed to be protected in extremely challenging situations. 

MIL-PRF-131 Type 1 Class 2 pouches are designed for barrier use in military applications, but have slightly different requirements they must meet when compared to Type 1 Class 1 pouches. Currently, CarePac offers one type of MIL-PRF 131 T1 C2 SPEC film: KF 1312. 

This film meets the criteria set forth by the Department of Defense. Pouches constructed from MIL-PRF 131 Class 2 films are guaranteed to meet the specifications required in regards to strength, durability, and resistance to environmental factors. It’s important to note that the requirements for Class 2 pouches are less strict than Class 1 pouches, so this type of packaging is used in less extreme conditions or for less critical applications. Regardless, they are crafted to the highest standards and will meet all necessary criteria.

Whether you need barrier bags that adhere to MIL-PRF 131 Class 1, 2, or 3, or another type of military specific specification, we’re a partner you can count on. We’ve been manufacturing packaging for sensitive industries, including the military, for decades, and can help you craft packaging that complies with MIL-PRF 131. Have questions? Connect with us today to discuss your project. Ready to get started? We are, too! Get an Instant Quote!