When it comes to the safe transportation of goods, ensuring the stability and security of cargo is paramount. This is where dunnage bags provide a unique solution to a widespread problem many in the business of logistics experience. Learn about the dunnage bag and how it can help you protect your items in transit.
What are dunnage bags?
Dunnage bags are inflatable bags made of strong, flexible materials such as polyethylene or polypropylene. They are used to fill the gaps and secure cargo loads in shipping containers, trucks, or railcars to prevent movement, shifting, and damage during transportation.
How do dunnage bags work?
Dunnage bags work by being placed in the void spaces between cargo items or between cargo and the walls of a shipping container or truck. Once positioned, the bags are inflated using compressed air, typically through a valve. As the bags fill with air, they expand and create a tight brace, exerting pressure on the cargo to immobilize it and prevent movement.

What are the benefits of using dunnage bags?
The use of dunnage bags offers several advantages:
Secure cargo: Dunnage bags provide a reliable solution for preventing cargo movement, reducing the risk of damage during transit.
Versatility: They can be used with a wide range of cargo types, including pallets, crates, and irregularly shaped items.
Cost-effective: Compared to other securing methods like wood bracing or metal strapping, dunnage bags are often more affordable.
Time-saving: Inflating and deflating dunnage bags is quick and easy, saving time during the loading and unloading process.
Safe to Handle: With no sharp edges or metal components, dunnage bags can easily be manipulated into position.
What sizes and types of dunnage bags are available?
Dunnage bags come in various sizes to accommodate different void spaces and cargo loads. Additionally, dunnage bags are available in different types, such as round bags, square bags, and wedge-shaped bags. The choice of bag type depends on the specific requirements of the cargo and the available space.
Protection Experts Australia supply three dunnage bag sizes:
- Small – 90 x 120cm
- Medium – 90 x 180cm
- Large – 90 x 210cm
Are dunnage bags reusable?
Yes, dunnage bags are often reusable. They are designed to withstand multiple uses, making them a cost-effective solution in the long run. After the bags are deflated, they can be easily stored and reused for future shipments.
Can dunnage bags be used for international shipping?
Yes, dunnage bags are suitable for international shipping. They are widely used in various industries, including logistics, automotive, and manufacturing, for both domestic and international transportation. However, it’s important to ensure that the dunnage bags meet the specific requirements and regulations of the shipping company and the destination country.
Are there any safety precautions when using dunnage bags?
While dunnage bags are generally safe to use, it’s important to follow proper guidelines:
- Choose the correct bag size and type to adequately fill the void space.
- Ensure the bags are properly positioned and inflated to provide sufficient bracing.
- Avoid overinflating the bags, as excessive pressure could damage the cargo. Pro-Ex bags come with a red stripe, which if visible indicates the bag has been over-inflated.
- Regularly inspect the bags for any signs of wear, damage, or leaks.
- Train personnel on proper handling and inflation techniques.
- Follow any specific instructions provided by the dunnage bag manufacturer.
Dunnage Bags provide a safe, reliable and re-usable option when protecting cargo from shifting in transit risking damaging your goods. Check out Protection Experts Australia dunnage bag range including bags, inflator guns and hoses. Reach out to our team who are happy to help find you the right product.