Dunnage

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Stabilizing capabilities Cordstrap dunnage bags
Cordstrap dunnage bag in container

Dunnage is a term used in the shipping industry and logistics to refer to materials used to protect goods and their packaging from moisture, contamination, and mechanical damage during transportation. Dunnage can be made from a variety of materials, including wood, plastic, foam, and inflatable air bags, each chosen based on the specific needs of the cargo and the mode of transport. The primary purpose of dunnage is to ensure that goods arrive at their destination in the same condition as when they were shipped, thereby reducing the risk of financial loss due to damaged goods.

Types of Dunnage[edit | edit source]

Dunnage can be categorized into several types based on the materials used and the purpose it serves:

  • Wooden Dunnage: Often used in container shipping and break bulk cargo, wooden dunnage includes materials such as boards, blocks, and planks that help in stabilizing cargo and preventing movement.
  • Foam and Plastic Dunnage: These materials are commonly used for cushioning and protecting fragile items from shock and vibration. Foam and plastic dunnage is lightweight and can be custom-shaped to fit around goods tightly.
  • Inflatable Dunnage Bags: Also known as airbags, these are used to fill voids within containers and prevent cargo from shifting during transport. They are adjustable, reusable, and suitable for a wide range of cargo types.
  • Paper Dunnage: This includes kraft paper, corrugated fiberboard sheets, and paperboards used for cushioning and filling voids in packaging. It is an eco-friendly option that is easily recyclable.

Importance of Dunnage[edit | edit source]

The use of dunnage is crucial in the shipping and logistics industry for several reasons:

  • Protection: Dunnage protects goods from physical damage such as dents, scratches, and breakage, as well as from moisture and contaminants.
  • Stabilization: It helps in stabilizing cargo during transport, preventing shifts that could lead to damage or accidents.
  • Efficiency: Proper use of dunnage can improve the efficiency of loading and unloading processes, as well as optimize the use of space within shipping containers and other transport vehicles.
  • Compliance: Using dunnage appropriately ensures compliance with international shipping regulations and standards, which can vary depending on the cargo and destination.

Regulations and Standards[edit | edit source]

The selection and use of dunnage must comply with various international regulations and standards to ensure safety and environmental protection. These regulations may dictate the type of dunnage that can be used for certain types of cargo, as well as how it should be disposed of after use. For example, the International Maritime Organization (IMO) has guidelines for the use of dunnage in maritime shipping to prevent environmental contamination.

Environmental Considerations[edit | edit source]

The environmental impact of dunnage is a growing concern, leading to increased interest in sustainable and recyclable materials. Biodegradable options, such as paper and certain types of plastic, are becoming more popular as industries seek to reduce their environmental footprint.

Dunnage Resources
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Contributors: Prab R. Tumpati, MD