Pallet collars have been used for decades in industrial packaging, but the basic idea remains remarkably current. By adding hinged sidewalls to a standard pallet, they create a reusable box that can be adjusted in height, collapsed when empty and reused through repeated shipping cycles.
That combination of simplicity and flexibility helps explain their continued use in manufacturing, warehousing, automotive, engineering and other closed-loop supply chains.
What Is a Pallet Collar?
A pallet collar is a hinged frame that sits on top of a pallet to create reusable sidewalls around a unit load. Collars are most commonly made from wood, although plastic, plywood and composite versions are also available.
The individual boards are joined by hinges so the collar can fold flat when empty. One collar provides a relatively shallow enclosure, while additional collars can be stacked vertically to create the required container height.
The result is essentially a modular reusable box built on a pallet base. Unlike a fixed-height crate, the container can be made taller or shorter depending on the load.
This makes pallet collars particularly useful for bulky, irregular or loose products that are difficult to stack safely on an open pallet. They can also provide access to the load by simply removing one or more collars rather than dismantling an entire crate.
When the shipment has been unloaded, the collars fold flat for storage or return transportation. That collapsibility can significantly improve empty return ratios compared with rigid wooden boxes.
For a broader introduction to pallet construction and reusable pallet systems, see our pallet guide.
Why Use Pallet Collars?
The attraction of pallet collars starts with flexibility. A conventional wooden box has a fixed height. With collars, the shipper can add or remove sections according to the load being shipped.
That can reduce wasted cube while still providing side protection and allowing irregular products to be stacked. In applications where load height varies from shipment to shipment, the same basic packaging system can accommodate several configurations.
Pallet collars can also reduce reliance on expendable packaging. Instead of rebuilding wooden crates or disposing of corrugated containers after each shipment, the pallet and collars can remain in circulation through a managed return loop.
Among their principal advantages are:
- Reusable construction suitable for repeated trips
- Adjustable height by adding or removing collar sections
- Improved containment and protection for loose or irregular loads
- Collapsible design for more efficient storage and return transportation
- Simple assembly without specialized tools
- Potential reduction in stretch wrap, shrink film, strapping or expendable boxes
- Repairability and recyclability, particularly with wooden collar systems
The modular design can also simplify access to the load. Rather than reaching deep into a fixed container, an operator can remove upper collars as the contents are consumed. That can be useful in line-side and work-in-process applications where the packaging remains beside the production process.
A Pallet Collar Is Part of a System
Although the collar receives most of the attention, the complete packaging system usually includes several components. The pallet forms the base, one or more collars create the walls, and a lid may be added where greater protection, stacking security or tamper resistance is required.
Internal reusable dunnage can also be incorporated when products need separation, cushioning or defined positioning. Dividers, foam, textile inserts and other materials can turn a relatively simple pallet-and-collar system into packaging designed around a particular component.
Collar dimensions typically correspond with established pallet footprints, allowing them to work with familiar materials-handling equipment, racking and transport systems. The packaging still needs to be specified carefully, however. Pallet capacity, collar strength, stacking height and load distribution all influence system performance.
Wood remains especially common because it provides a strong combination of stiffness, repairability, availability and cost. Plastic collars may be attractive where cleanability, moisture resistance, consistent dimensions or reduced maintenance are priorities.
Where Pallet Collars Fit Best
Pallet collars are particularly well suited to supply chains where the packaging can be recovered and reused. Manufacturing plants may use them for work-in-process parts, components moving between suppliers and assembly facilities, maintenance materials, spare parts and other goods that travel repeatedly between known locations.
They are less compelling where there is little chance of recovering the packaging. Like most reusable transport packaging, the economics depend on enough trips being completed to recover the additional investment.
The return journey is one of their strongest features. Empty collars can be folded flat and stacked on pallets, allowing many more empty units to fit in the same trailer or storage area than assembled wooden boxes.
That does not mean every application automatically produces a lower cost. The return distance, number of turns, repair rate, asset loss and handling requirements all influence the result. A durable reusable package that disappears after the first trip is still an expensive one-way package. Pallet collars therefore work best when the outbound and return flows are considered together.
Pallet Collars Versus Wooden Boxes and Bulk Containers
Pallet collars are often compared with wooden boxes because both provide rigid side protection around a palletized load. The important difference is modularity. A box generally arrives with a fixed height and remains that way whether full or empty. Collars can be added, removed and folded flat.
Reusable bulk containers offer another alternative. Molded plastic bulk boxes can provide excellent durability, consistent dimensions and rapid setup, but they also come in predetermined sizes. Pallet collars can be attractive where product dimensions or shipment quantities change enough that adjustable height has real value.
The tradeoff is that a pallet-and-collar system has more individual components to manage. Collars, pallets, lids and internal dunnage can become separated if the return process is poorly controlled.
There is therefore no single packaging format that wins across every application. Pallet collars occupy a useful middle ground between an open pallet and a fully enclosed rigid container: more protection and stackability than the former, but more dimensional flexibility than many fixed containers.
Still a Practical Reusable Packaging Option
Pallet collars are not a new packaging technology, and that is part of their appeal. The design is mechanically simple, easy to understand and compatible with the pallet-handling infrastructure already found throughout industry. Furthermore, the ability to adjust container height, collapse the packaging for the return trip and replace damaged components can give pallet collars a long working life in controlled loops.
They will not replace bulk containers, crates or other reusable packaging in every application. But where loads vary in height, side containment is important and empty packaging must come back efficiently, the humble pallet collar remains a remarkably adaptable solution.
Explore pallet collars alongside bulk containers, sleeve packs, steel racks, pallets and other returnable formats in our Types of Reusable Transport Packaging guide.
Also read:
Pallet Collar Business Acquired by James Jones & Sons (Pallets & Packaging) Ltd
Pallet Collars from Schoeller Allibert the Right Fit for Hermes
Rick LeBlanc, EMBA, is the founder and editor of Reusable Packaging News (subscribe to the free newsletter) and editor of Western Pallet Magazine. A supply chain journalist with more than 30 years of experience, he specializes in pallets, reusable packaging, material handling and related operations. Rick is co-author of Pallets: A North American Perspective and Pallets & Progress: A Collected History of Pallets and Palletized Handling 1922–1945. He is also an advisory board member of the Virginia Tech Center for Packaging and Unit Load Design. Read Rick’s full bio.
