
1. Product Name
Kraft Paper Dunnage Air Bags – Secure Cargo & Prevent Transit Damage
(Optional Subtitle: Heavy-Duty PP Laminated Outer Bag | Nylon Multi-Layer Inner Bladder | AAR & SGS Certified | Reusable & Eco-Friendly)
2. Key Product Highlights (Bullet Points)
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Superior Load Stability: Instantly fills voids between cargo, pallets, and containers to prevent shifting, tipping, and collapsing during ocean, rail, or truck transport.
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Heavy-Duty Construction: Features a rugged outer bag made from PP-laminated Kraft Paper (or Woven PP) for high durability, paired with an airtight Nylon/PE multi-layer inner bladder for maximum pressure retention.
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Certified Safety: Fully compliant with AAR (Association of American Railroads) and SGS standards, ensuring reliable performance for international shipping and heavy industrial logistics.
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Cost-Effective & Reusable: A durable alternative to wooden bracing or foam. These bags can be deflated and reused multiple times within a closed-loop system, significantly reducing packaging waste and costs.
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Easy Inflation: Equipped with a high-quality non-return valve that allows for rapid inflation with standard air compressors or handheld inflators and quick deflation for disposal or reuse.
3. Technical Specifications Table
- Customize the values below based on your actual inventory. Note that Kraft paper bags are generally for single or limited reuse, while Woven bags are for multi-use.
| Specification |
Standard Kraft Paper Bag |
Heavy Duty Woven Bag |
| Outer Bag Material |
Kraft Paper + PP Lamination |
PP Woven Fabric (Recyclable) |
| Inner Bladder Material |
5-Layer Co-extruded Film (PA/PE) |
5-Layer Co-extruded Film (PA/PE) |
| Available Widths |
500mm, 800mm, 1000mm, 1200mm |
500mm, 800mm, 1000mm, 1200mm |
| Available Lengths |
900mm, 1200mm, 1500mm, 1800mm |
900mm, 1200mm, 1500mm, 1800mm |
| Working Pressure |
0.2 - 0.4 Bar (3 - 6 PSI) |
0.4 - 0.6 Bar (6 - 9 PSI) |
| Bursting Pressure |
> 0.8 Bar (12 PSI) |
> 1.2 Bar (17 PSI) |
| Valve Type |
Non-Return Safety Valve |
Non-Return Safety Valve |
| Reusability |
Limited (1-3 trips) |
High (5-10+ trips) |
| Certifications |
SGS, ISO 9001 |
SGS, AAR, ISO 9001 |
| Packaging |
Flat Packed in Cartons |
Flat Packed in Cartons |
4. Detailed Product Description
Overview
Ensure your cargo arrives intact with our Kraft Paper Dunnage Air Bags. Designed to fill empty spaces in containers, trucks, and railcars, these inflatable bags create a secure buffer that absorbs shock and prevents load movement. Constructed with a tough outer shell of PP-laminated Kraft paper and a highly airtight inner bladder, they provide a robust barrier against transit damage. They are the ideal replacement for traditional timber bracing, offering a faster, cleaner, and more efficient packaging solution.
Why Choose Our Kraft Paper Air Bags?
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Damage Prevention: By filling the gaps between pallets or cargo units, the air bag acts as a shock absorber, eliminating the "domino effect" where one falling box damages the rest.
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Space Optimization: Unlike bulky wooden braces, deflated air bags take up minimal storage space. Once inflated, they conform perfectly to irregular gaps, maximizing container capacity.
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Rugged Durability: The outer Kraft paper layer is reinforced with PP lamination, providing high resistance to tearing and puncture from rough cardboard or wooden pallets.
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Eco-Friendly Logistics: Replaces non-recyclable Styrofoam and disposable wood. The paper exterior is recyclable, and the reusable woven options further reduce environmental impact.
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Fast Application: drastically reduces loading and unloading times compared to nailing wooden braces. Simply insert, inflate, and go.
Performance Metrics
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Tensile Strength: High tensile strength to withstand dynamic forces during braking and cornering.
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Air Tightness: Advanced valve design ensures the bag remains inflated for the duration of the trip.
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Friction Surface: The paper/woven texture provides excellent grip against cargo surfaces, preventing slippage.
5. Application Scenarios
Describe where and how customers should use the product.
Container Shipping (FCL/LCL): Filling voids between pallets in 20ft and 40ft containers to prevent cargo shift during rough seas.
Trucking & LTL (Less-Than-Truckload): Stabilizing mixed loads on flatbed trucks or in box trailers where cargo sizes vary.
Rail Transport: Securing heavy industrial goods that are subject to high vibration and sudden jolts during train coupling.
Palletized Goods: Preventing boxes from tipping over on unstable pallets or when stacked high in a warehouse.
Heavy Machinery: Used as a cushioning layer to protect sensitive equipment from vibrating against container walls.
6. Selection Guide: Choosing the Right Size
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Measuring the Void:
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Width: Measure the smallest gap width between the cargo. The bag width should be slightly smaller than this gap (e.g., for a 600mm gap, use a 500mm bag).
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Length: Measure the depth of the void (from the cargo face to the container wall). The bag length should be at least 100mm-200mm longer than the depth to ensure the valve remains accessible outside the cargo zone.
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Material Choice:
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Kraft Paper: Best for one-way export shipments where cost is a primary factor.
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Woven PP: Best for closed-loop systems (e.g., factory to warehouse and back) where the bags can be retrieved and reused.
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Pressure Requirements:
- Standard bags are suitable for most general cargo.
- Heavy-duty bags are required for securing massive loads (e.g., steel coils, heavy machinery) where high pressure is needed to prevent movement.
7. Frequently Asked Questions (FAQ)
Q: How do I inflate the air bag?
A: You will need an air compressor or a portable inflator device. Attach the nozzle to the valve, inflate until the bag is firm and fills the void completely, then remove the nozzle. The non-return valve will automatically seal.
Q: Can I reuse the Kraft Paper air bags?
A: While they are durable, Kraft paper bags are generally designed for single-trip or limited reuse (1-3 times) depending on handling care. For frequent reuse, we recommend our Woven PP Dunnage Bags.
Q: What happens if the bag gets punctured?
A: Small punctures can often be repaired with strong packing tape. However, for critical loads, it is best practice to replace the bag to ensure full security.
Q: Do you provide the inflation tools?
A: Yes, we supply handheld inflators, electric pumps, and deflation tools compatible with our valves. Please inquire for a tooling quote.
Q: Is this product compliant with international shipping standards?
A: Yes, our dunnage bags meet AAR (Association of American Railroads) loading rules and are SGS certified, making them suitable for global export.