Dunnage bags, also known as airbags, and inflatable bags, are used to secure and stabilize cargo.
Introduced around 1970, dunnage bags provide convenient and cost-effective cargo stabilization in ISO sea containers, closed railcars, trucks, and oceangoing vessels. As improperly secured cargo is a safety hazard, dunnage bags improve road safety. According to the European Commission's Directorate-General for Mobility and Transport, "up to 25% of accidents involving trucks can be attributable to inadequate cargo securing". [1]
Dunnage airbags consist of closed chambers made from an elastic film filled with air. These are placed in the void between the cargo to stabilize, secure, and protect it during transportation. [2] The quantity of inflation air may be varied in accordance with the particular properties and requirements of the package contents.
Dunnage bags are commercially available in various sizes and designs, including spheres, rectangles, corner and edge cushions, and tubular cushions. Therefore, almost any type of cargo can be secured with them, including break bulk and palletized cargo, coils, barrels, cases, and crates.
Dunnage bags are very safe to use for both the shipping and receiving end of transportation, and are waterproof.[ citation needed ] They inflate rapidly with compressed air, and are easy to install; compressed air is often available through an outlet in the truck's compressed air system.
Important in the use of dunnage bags is that the size of the bag is determined by the void. If this does not match, the bags will not do their work properly, with potential large damage to cargo and people. For air cushions, it is important to avoid damage as a result of wear and tear. Air cushions should never be used as fillers against doors or any non-rigid surfaces or partitions. [3]
Some bags can be reused, and are ultimately recyclable. To reuse the dunnage bag, it needs to be undamaged and equipped with a screw-on quick fill valve. For single use, the bag is equipped with a quick-fill one-way safety valve. Inflatable air cushions are available both as disposable items and as recyclable products. [3]
Paper dunnage bags are made out of two components, an inner component that consists of a polyethylene inner bag, the outer component is a paper bag. The outer bag is made of the highest quality, light weight kraft paper of high tensile strength. The bags come in different strengths and varieties and can be made in any special size. The inner component provides optimum pressure, and the outer component provides optimum strength. For use in the chemical industry, paper bags can be polycoated. A polycoat will make the bag resistant to specific chemicals.[ citation needed ]
Woven polypropylene bags are extremely durable and can be used in dry and wet conditions. These bags are best for extreme heavy loads.[ citation needed ] Poly woven airbags have greater elasticity than paper dunnage airbags for more surface contact with the pallets. The woven material provides greater tear strength and superior moisture resistance than most other dunnage bag materials. Poly woven airbags typically have greater reusability due to their durability and are recyclable.
The paper used on the outside of the bag is laminated on the inside with a woven polypropylene layer, which allows higher resistance to punctures and moisture.[ citation needed ]
Dunnage bags are susceptible to pointed and sharp articles such as nails. [3]
An airbag is a vehicle occupant-restraint system using a bag designed to inflate extremely quickly, then quickly deflate during a collision. It consists of the airbag cushion, a flexible fabric bag, an inflation module, and an impact sensor. The purpose of the airbag is to provide a vehicle occupant with soft cushioning and restraint during a collision. It can reduce injuries between the flailing occupant and the interior of the vehicle.
Freight consists of goods conveyed by water, air, or land, while cargo refers specifically to freight when conveyed via water or air. In economics, freight refers to goods transported at a freight rate for commercial gain. The term cargo is also used in case of goods in the cold-chain, because the perishable inventory is always in transit towards a final end-use, even when it is held in cold storage or other similar climate-controlled facilities, including warehouses.
Packaging is the science, art and technology of enclosing or protecting products for distribution, storage, sale, and use. Packaging also refers to the process of designing, evaluating, and producing packages. Packaging can be described as a coordinated system of preparing goods for transport, warehousing, logistics, sale, and end use. Packaging contains, protects, preserves, transports, informs, and sells. In many countries it is fully integrated into government, business, institutional, industrial, and personal use.
A pallet is a flat transport structure, which supports goods in a stable fashion while being lifted by a forklift, a pallet jack, a front loader, a jacking device, or an erect crane. A pallet is the structural foundation of a unit load, which allows handling and storage efficiencies. Goods in shipping containers are often placed on a pallet secured with strapping, stretch wrap or shrink wrap and shipped. Since its invention in the twentieth century, its use has dramatically supplanted older forms of crating like the wooden box and the wooden barrel, as it works well with modern packaging like corrugated boxes and intermodal containers commonly used for bulk shipping. In addition, pallet collars can be used to support and protect items shipped and stored on pallets.
Shrink wrap, also shrink film, is a material made up of polymer plastic film. When heat is applied, it shrinks tightly over whatever it is covering. Heat can be applied with a handheld heat gun, or the product and film can pass through a heat tunnel on a conveyor.
Dunnage is inexpensive or waste material used to load and secure cargo during transportation; more loosely, it refers to miscellaneous baggage, brought along during travel. The term can also refer to low-priority cargo used to fill out transport capacity which would otherwise ship underweight.
A coffee bag is a container used for shipping and storing coffee. Coffee beans are usually transported in large jute sacks, while coffee sold to consumers may be packaged as beans or ground coffee in a small, sealed plastic bag.
Strapping, also known as bundling and banding, is the process of applying a strap to an item to combine, stabilize, hold, reinforce, or fasten it. A strap may also be referred to as strapping. Strapping is most commonly used in the packaging industry.
Nonwoven fabric is a fabric-like material made from staple fibre (short) and long fibres, bonded together by chemical, mechanical, heat or solvent treatment. The term is used in the textile manufacturing industry to denote fabrics, such as felt, which are neither woven nor knitted. Some non-woven materials lack sufficient strength unless densified or reinforced by a backing. In recent years, non-wovens have become an alternative to polyurethane foam.
"Technical textile" refers to a category of textiles specifically engineered and manufactured to serve functional purposes beyond traditional apparel and home furnishing applications. These textiles are designed with specific performance characteristics and properties, making them suitable for various industrial, medical, automotive, aerospace, and other technical applications. Unlike conventional textiles used for clothing or decoration, technical textiles are optimized to offer qualities such as strength, durability, flame resistance, chemical resistance, moisture management, and other specialized functionalities to meet the specific needs of diverse industries and sectors.
A flexible intermediate bulk container (FIBC), jumbo, bulk bag, super sack, big bag, or tonne bag is an industrial container made of flexible fabric that is designed for storing and transporting dry, flowable products, such as sand, fertilizer, and granules of plastic.
The term unit load refers to the size of an assemblage into which a number of individual items are combined for ease of storage and handling, for example a pallet load represents a unit load which can be moved easily with a pallet jack or forklift truck, or a container load represents a unit for shipping purposes. A unit load can be packed tightly into a warehouse rack, intermodal container, truck or boxcars, yet can be easily broken apart at a distribution point, usually a distribution center, wholesaler, or retail store for sale to consumers or for use.
In shipping, break-bulk, breakbulk, or break bulk cargo, also called general cargo, is goods that are stowed on board ship in individually counted units. Traditionally, the large numbers of items are recorded on distinct bills of lading that list them by different commodities. This is in contrast to cargo stowed in modern intermodal containers as well as bulk cargo, which goes directly, unpackaged and in large quantities, into a ship's hold(s), measured by volume or weight.
A tote bag is a large, typically unfastened bag with parallel handles that emerge from the sides of its pouch.
An inflatable air cushion is a bag of fabric or plastic that can be inflated to provide cushioning. Unlike bubble wrap, inflatable air cushions have a check valve to allow the cushion to be inflated or sometimes deflated.
A shipping container is a container with strength suitable to withstand shipment, storage, and handling. Shipping containers range from large reusable steel boxes used for intermodal shipments to the ubiquitous corrugated boxes. In the context of international shipping trade, "container" or "shipping container" is virtually synonymous with "intermodal freight container", a container designed to be moved from one mode of transport to another without unloading and reloading.
Load securing, also known as cargo securing, is the securing of cargo for transportation. According to the European Commission Transportation Department “it has been estimated that up to 25% of accidents involving trucks can be attributable to inadequate cargo securing”. Cargo that is improperly secured can cause severe accidents and lead to the loss of cargo, lives, and vehicles, or cause environmental hazards.
A bag is a common tool in the form of a non-rigid container, typically made of cloth, leather, or other materials. The use of bags predates recorded history, with the earliest bags being lengths of animal skin, cotton, or woven plant fibers, folded up at the edges and secured in that shape with strings of the same material. Bags are used for carrying items like personal belongings, groceries, or other objects. They comes in various shapes and sizes, often equipped with handles or straps for easy carrying.
Reusable packaging is manufactured of durable materials and is specifically designed for multiple trips and extended life. A reusable package or container is "designed for reuse without impairment of its protective function." The term returnable is sometimes used interchangeably but it can also include returning packages or components for other than reuse: recycling, disposal, incineration, etc. Typically, the materials used to make returnable packaging include steel, wood, polypropylene sheets or other plastic materials.