Edge protectors are among the small accessories used in load securing that are often underestimated in practice. Yet they often determine whether cargo arrives undamaged, whether a lashing strap functions properly, and whether sensitive edges are reliably protected during transport.
Anyone securing cardboard boxes, palletized goods, machine components, furniture, pipes, timber, metal profiles, or sensitive surfaces with lashing straps, tensioning straps, or strapping should not consider edge protection an optional accessory. In many applications, it is an important part of clean, material-friendly, and safe transport securing.
The reason is simple: Lashing creates pressure. Without edge protection, this pressure is often concentrated on a narrow edge. The webbing can cut into the load, crush cardboard packaging, damage paintwork, splinter wood, or become weakened by abrasion. Edge protectors distribute these forces over a larger area, guide the strap more effectively over the edge, and protect both the cargo and the securing equipment.
In Germany, Section 22 of the German Road Traffic Regulations (StVO) requires cargo, including load securing equipment, to be secured in such a way that it cannot slide, tip over, roll back and forth, or fall from the vehicle even during emergency braking or sudden evasive manoeuvres. Edge protectors do not replace professional load securing, but they help ensure that lashing straps, packaging, and cargo remain reliably protected during transport.
What Is an Edge Protector?
An edge protector is usually an L-shaped or angled protective element that is placed over the edge of a package, pallet, or transported item. A lashing strap, tensioning strap, lashing band, strapping, or stretch film is then guided over or along the protector. The protector therefore sits between the securing equipment and the cargo.
Its main purpose is to distribute pressure, friction, and tensile forces more effectively. Without edge protection, the force of a strap often acts directly on a single edge. With an edge protector, this load is distributed over a larger area. This protects the goods, stabilizes the packaging, and reduces the risk of damage.
Depending on the design, an edge protector can also improve strap guidance. Versions with a guide slot or T-slot help keep the strap in position. This is particularly useful on smooth surfaces, with wide straps, or with irregularly shaped loads.
What Functions Does Edge Protection Perform in Load Securing?
In practice, edge protectors perform several functions at the same time. They protect goods from pressure marks, cuts, scratches, and crushing. At the same time, they protect the lashing strap from abrasion and sharp edges. They also help distribute the strap's pre-tensioning force more evenly across the cargo.
This is particularly important when tie-down lashing is used. With tie-down lashing, the pre-tensioning force of the strap presses the cargo against the loading surface. This increases the friction between the cargo and the surface beneath it. If the strap runs over a sensitive or sharp edge without protection, damage can occur precisely at that point. The edge protector prevents the force from cutting into the edge at a single point.
Another advantage: Edge protection can prevent straps from wearing against rough or sharp surfaces while the vehicle is moving. This protects not only the cargo but also the load securing equipment itself. A damaged lashing strap must no longer be used if its safe function has been compromised.
When Should Edge Protectors Be Used?
Edge protectors should always be used when securing equipment runs directly over a sensitive, sharp, or pressure-sensitive edge. This is particularly relevant for cardboard packaging, palletized goods, furniture, painted surfaces, wooden packaging, metal components, plastic parts, glass racks, construction products, and machine components.
A typical example is securing a pallet loaded with cardboard boxes. If the tensioning strap is guided over the upper edge of the boxes without edge protection, localized pressure is created when the strap is tightened. The boxes may become crushed, which can cause visible damage to the goods or weaken the stability of the packaging. An edge protector distributes this pressure over a wider area.
With sharp-edged cargo, protecting the strap itself is also a priority. Metal edges, machine components, steel profiles, or rough wooden packaging can damage the webbing. Even if the strap initially appears intact, its material structure may already have been weakened. Suitable edge protectors significantly reduce this risk, provided that they match the edge, strap width, and load.
Edge protectors are also useful when strapping pallets. Without protection, strapping can cut into cardboard packaging or cause pressure marks. Plastic edge protectors or cardboard edge protectors stabilize the edges, ensure more even strap tension, and improve handling during packaging.
How to Use Edge Protectors Correctly: Step-by-Step Guide
1. Check the Cargo and Edges
Before lashing, the cargo should be inspected carefully. Key factors include the material, weight, shape of the edges, surface sensitivity, and packaging stability. A rounded wooden edge has different requirements from a sharp steel edge or the sensitive painted body of a piece of furniture.
In particular, check whether there are sharp edges, whether the strap could chafe, whether the packaging is pressure-sensitive, and whether the strap will later run over corners, edges, or protrusions. It is also important to consider whether the edge protector could shift during tensioning. The more accurately these factors are assessed, the easier it is to select suitable edge protection.
2. Select the Right Edge Protector
Not every edge protector is suitable for every load. Cardboard edge protectors may be sufficient for lightweight cardboard packaging or palletized shipping goods. For heavy, sharp-edged, or recurring transport operations, plastic edge protectors are usually the better choice.
When wide lashing straps are used, the edge protector must be wide enough for the strap to rest on it properly without extending beyond the sides. If the edge protector is too small, some of the load remains concentrated at individual points. This can be problematic for both the goods and the strap.
In the Sandax range of edge protectors, you will find edge protection solutions made from both cardboard and plastic. Plastic edge protectors are suitable for robust applications, while cardboard protectors are frequently used in packaging and shipping.
3. Position the Edge Protector Before Tensioning
The edge protector should always be positioned on the edge before the strap is fully tensioned. It should sit flush against the load and completely cover the edge under stress. It is important that the strap subsequently runs directly over the edge protector.
If the protector is positioned too far to the left or right, the strap may partially run beside it during tensioning. This again creates localized pressure. For palletized goods, protectors should be positioned on all upper edges exposed to load. For vertical stabilization, edge protection strips can also be used on vertical edges, for example to stabilize stacks of boxes or packaging units.
4. Guide the Strap Straight and Flat
A lashing strap should run as straight as possible and without twisting over the edge protector. Twisted straps transfer forces less effectively, do not lie flat, and can press more deeply into the packaging or protective material. They also increase the risk of the strap moving during transport.
Therefore, guide the strap flat over the edge protector. Make sure it does not run over screw heads, sheet-metal edges, sharp profiles, or rough surfaces. If an edge protector has a slot or guide, the strap should sit inside this guide. This improves positioning and makes tensioning easier.
5. Apply Tension Evenly
Tensioning is not about tightening the strap as much as possible. The key is applying the correct pre-tensioning force for the selected securing method. Too little tension can allow the cargo to move. Too much tension can damage packaging, displace the edge protector, or crush sensitive surfaces.
After tensioning, check whether the edge protector is still positioned correctly. Particularly on smooth surfaces, irregular loads, or changing angles, a protector can shift during tensioning. If necessary, slightly loosen the strap, reposition the edge protector, and then tension the strap again.
6. Carry Out a Final Check Before Starting the Journey
Before starting the journey, the entire securing system should be checked. Are all edge protectors correctly positioned? Are the straps flat and untwisted? Is the ratchet closed? Are the lashing points suitable? Has the cargo been additionally secured by positive locking or sufficiently secured by friction? Are there any edges that remain unprotected?
It is also advisable to carry out another inspection after a short distance or after partial unloading. Cargo may settle, packaging may compress, and pre-tensioning force may decrease. The edge protectors should then be correctly repositioned if necessary.
Cardboard or Plastic Edge Protectors: Which Is Better?
Cardboard edge protection is particularly suitable for packaging, shipping, palletizing, and single-use applications. It protects edges from stretch film, strapping, and light pressure loads. It is also well suited to cardboard packaging and standardized packaging processes.
Plastic edge protectors are the more robust solution for frequent use, higher loads, and more demanding transport conditions. They are reusable, generally more resistant, and better suited when lashing straps, wide tensioning straps, or heavy cargo are involved.
When selecting edge protection, the following rule applies: The heavier, sharper, more valuable, or more sensitive the cargo, the more carefully the edge protection should be selected. If in doubt, a robust plastic protector with a sufficiently large contact area is often the safer choice.
Common Mistakes When Using Edge Protectors
A common mistake is to use edge protection only where the goods are visibly sensitive. In fact, the lashing strap also needs protection. Metal edges, formwork components, machine parts, or rough wooden packaging in particular can damage straps.
The second mistake is incorrect positioning. An edge protector is of little use if the strap runs beside it during tensioning or if the protector only partially rests on the edge. The loaded edge must be completely covered.
The third mistake is using an edge protector that is too small. If the contact area is too narrow, the force is not distributed sufficiently. When using wide straps, the edge protector should match the strap width.
The fourth mistake is reusing damaged edge protectors. Cracks, breaks, severe deformation, sharp damaged areas, or brittle material are warning signs. Damaged edge protectors should be replaced.
The fifth mistake is confusing anti-slip mats with edge protection. Anti-slip mats increase the friction between the cargo and the loading surface, but they are not a substitute for suitable edge protection on sharp edges. Both aids serve different purposes and can complement each other effectively.
Practical Examples of Correct Use
Pallet with Cardboard Boxes
When securing a pallet loaded with cardboard boxes, edge protectors are positioned on the upper edges exposed to load. The lashing strap runs flat over the protectors. This prevents the boxes from being crushed. At the same time, the strap remains properly guided and the packaging stays more stable.
Painted Furniture Components
For painted furniture components, a soft edge protector is recommended to reduce pressure marks. The strap should rest across a wide area and should not run directly over sensitive visible surfaces. An appropriate protective layer may also be useful when particularly sensitive surfaces need to be protected.
Steel Parts and Machine Components
With steel parts or machine components, protecting the strap is the primary concern. A robust plastic edge protector should be used to reliably separate the strap from sharp edges. It is also important to ensure that the strap does not run over burrs, holes, or sharp-edged protrusions.
Pallets with Strapping
For palletized goods secured with strapping, cardboard or plastic edge protectors protect the edges from cuts and help stabilize the load unit. This is particularly useful when goods are stacked, stored, or handled multiple times.
Checklist: How to Use Edge Protectors Correctly
- Is the edge sharp, rough, or sensitive?
- Does the edge protector match the strap width?
- Does the protector completely cover the loaded edge?
- Is the strap lying flat and untwisted?
- Is the edge protector positioned so that it cannot slip?
- Is the load additionally secured by positive locking or anti-slip material?
- Are the strap, ratchet, hooks, and label in good condition?
- Has the securing system been checked again after tensioning?
- Are damaged edge protectors consistently removed from use?
Conclusion: A Small Measure with a Big Impact
Edge protectors are a simple but highly effective aid in load securing. They protect packaging and goods from pressure marks, protect lashing straps from abrasion, and help guide tensioning forces over edges in a more controlled manner. Edge protection should be used consistently, especially for sharp-edged, sensitive, or high-value cargo.
Choosing the right type is essential: Cardboard is often suitable for packaging and single-use applications, while plastic is better suited to robust and repeated transport operations. When using wide straps, heavy loads, or under demanding operating conditions, particular attention should be paid to a sufficiently large contact area, suitable strap guidance, and durable material.
Anyone who positions edge protectors correctly, guides straps straight, and checks them after tensioning not only improves transport safety but also reduces damage, complaints, and unnecessary material wear.
In our range, you will find suitable edge protection solutions for lashing straps, tensioning straps, Lashband and strapping – from cardboard edge protectors to robust plastic edge protectors for professional use.
FAQ: How to Use Edge Protectors Correctly
When Should I Use Edge Protectors?
Edge protectors should always be used when lashing straps, tensioning straps, or strapping run over sensitive, sharp-edged, or pressure-sensitive edges. They protect both the goods and the securing equipment.
Do Edge Protectors Protect Only the Cargo or Also the Lashing Strap?
They protect both. Edge protectors prevent pressure marks and cuts on the cargo while also reducing abrasion and cutting stress on the strap.
Are Cardboard Edge Protectors Sufficient?
Cardboard edge protectors may be sufficient for cardboard packaging, pallet packaging, stretch film, and strapping. For heavy goods, sharp edges, or reusable applications, plastic edge protectors are generally more suitable.
Can Edge Protectors Be Reused?
Plastic edge protectors can often be reused provided they are not damaged, broken, or severely deformed. Cardboard edge protectors, on the other hand, are often used as single-use packaging protection.
What Is an Edge Protector with a T-Slot?
An edge protector with a T-slot has a guide for the strap. This helps keep the lashing strap in position and reduces the risk of it slipping during tensioning.
Does Edge Protection Replace Proper Load Securing?
No. Edge protection is an important aid, but it does not replace suitable lashing equipment, appropriate lashing points, correct strap guidance, or sufficient securing force.