A PP air dunnage bag (also known as an inflatable dunnage bag or airbag) is a packaging solution used to stabilize and secure cargo during transportation, particularly in shipping containers, trucks, or rail cars.
Key Features:
- Material: Made from polypropylene (PP) fabric, which is durable, lightweight, and resistant to tearing.
- Inflation: Filled with compressed air to expand and fill empty spaces between cargo loads.
- Function: Prevents shifting, vibrations, and damage by tightly bracing goods in place.
Common Uses:
✔ Shipping containers (to block cargo movement)
✔ Truck and rail transport (to stabilize pallets or boxes)
✔ Warehousing (temporary load support)
Advantages:
- Cost-effective compared to wooden or foam dunnage.
- Reusable and easy to install/deflate.
- Customizable sizes for different gaps.
- Lightweight, reducing overall shipping weight.
How It Works:
- Place the deflated bag in the gap between cargo.
- Inflate using an air compressor (typically to 0.2–0.35 bar / 3–5 psi).
- The bag expands to create a tight barrier, preventing load shifts.
Types of Dunnage Bags:
- Standard PP bags (general use)
- Kraft paper dunnage (for lighter loads)
- Vinyl-coated bags (higher puncture resistance)
PP air dunnage bags are widely used in logistics to improve safety and reduce freight damage.
