Whether shipping pallets, bundles of building materials, machine components, or export packaging: Without reliable securing, cargo can shift, tip over, or become damaged during transport. Suitable strapping for load securing is therefore one of the most important tools when goods need to be bundled, secured on pallets, or stabilized for storage and transport.
The challenge is not simply to use any strap. The key is to select the right strapping for the weight, material, transport route, packaging, and processing method. Lightweight PP strapping for cardboard boxes serves a different purpose than strong PET strapping for heavy pallets or textile composite strapping for bulky industrial goods.
In this guide, we explain which types of strapping are available, when PET strapping, PP strapping, hot-melt strapping, PES strapping or composite strapping is the right choice and which mistakes should be avoided when it comes to load securing.
What Is Strapping?
Strapping is a strong band that is wrapped around packages, cardboard boxes, bundles, or pallets, tensioned, and secured. This keeps individual packages together or fixes them to a load unit. Depending on the application, the strap may be made of polypropylene, polyester, woven polyester fibers, hot-melt fibers, composite material, or steel.
For load securing, strapping is particularly useful when load units need to be stabilized: cardboard boxes are less likely to shift, layers remain together, bundles do not open, and sensitive goods can be securely fixed using suitable edge protection.
It is important to remember that strapping does not automatically replace every other securing measure. For transport by truck, container, or combined transport, the entire securing system must be considered. The load unit, vehicle, friction, positive locking, lashing equipment, dunnage, and packaging all work together.
Why Strapping Is So Important for Load Securing
During transport, forces act on the cargo. Even normal braking, cornering, ramps, vibrations, or evasive manoeuvres can be enough to cause unsecured goods to shift. A poorly secured pallet can become unstable, individual boxes can move, or entire load units can tip over.
Strapping primarily helps with three tasks:
- Stabilizing: Boxes, sacks, pipes, timber packages, or components remain together as a single unit.
- Protecting: Individual packages have less room to move and are better protected against transport damage.
- Standardizing: Strapped load units can be inspected more quickly and moved more safely in warehouses and shipping operations.
This is a major advantage particularly in distribution centers, industry, the building materials trade, mechanical engineering, and export packaging. Where many pallets are handled every day, maximum strength is not the only consideration. Efficient processing, ergonomic handling, and consistent quality are equally important.
PET, PP, or Textile: The Most Important Types of Strapping at a Glance
Not every type of strapping is suitable for every load. The material, strap width, thickness, breaking strength, and closure method must match the goods. The following types of strapping are among the most important solutions for packaging, shipping, and load securing.
PP Strapping: Cost-Effective for Light to Medium-Weight Packages
PP stands for polypropylene. PP strapping is lightweight, flexible, and cost-effective. It is frequently used for closing cardboard boxes, bundling lightweight goods, and securing small to medium-sized packages.
PP strapping is particularly suitable for standard packaging in everyday shipping operations where the loads remain manageable. It is a good choice for keeping cardboard packaging together or stabilizing lightweight pallets for internal transport.
For heavy, sharp-edged, or highly stressed loads, however, PP is generally not the first choice. In such cases, it should be assessed whether PET strapping or textile strapping is the better solution.
PET Strapping: Strong for Pallets and Heavy Goods
PET stands for polyethylene terephthalate. PET strapping has a higher breaking strength, greater dimensional stability, and better tension retention than many basic PP straps. It is frequently used as a robust alternative to steel strapping because it combines high strength with easier handling.
For load securing, PET is particularly relevant when pallets, machine components, heavy cardboard packaging, plastic boxes, or export goods need to be secured. PET strapping is also well suited when goods are stored for longer periods or transported over greater distances.
Another advantage: PET strapping does not rust, has no sharp steel edges, and can be processed using suitable manual, semi-automatic, or battery-powered strapping tools. For many companies, PET is therefore an economical solution for medium-duty to heavy-duty applications.
Textile Strapping: Flexible for Heavy and Sensitive Loads
Textile strapping is made from polyester fibers and is generally secured using metal buckles or tensioning buckles. This category includes hot-melt strapping, woven PES strapping, and composite strapping.
The major advantage of textile strapping lies in its combination of strength and flexibility. It adapts well to irregular contours, making it particularly suitable for bulky, sensitive, or sharp-edged goods.
Composite strapping is frequently used as a synthetic alternative to steel strapping. It combines high load-bearing capacity with safe handling and is suitable for applications including building materials, pipes, profiles, big bags, machine components, and export packaging.
What Breaking Strength Does Strapping Need?
The appropriate breaking strength depends on more than just the weight of the goods. Other decisive factors include the center of gravity, packaging stability, edges, transport duration, stacking, handling frequency, climatic conditions, and whether the strapping is simply bundling the goods or actually needs to stabilize a load unit.
As a general rule: The heavier, sharper-edged, more unstable, or more valuable the load, the higher the required strap strength should be. PP strapping is often sufficient for lightweight boxes. PET is generally the better choice for pallet loads, machinery, heavy crates, and longer transport routes. For bulky, very heavy, or sensitive goods, textile strapping should be considered.
The strength of the closure is also important. A strong strap provides little benefit if the seal, buckle, sleeve, or weld does not match the strap quality. The strap, tensioning tool, closure, and application should therefore always be considered as a complete system.
Practical tip: The actual securing performance is always determined by the weakest point. This may be the strap itself, but it can also be the closure, a damaged edge, insufficient strap tension, or unstable packaging.
Strapping and Load Securing: Positive Locking, Frictional Securing, and Load Units
Professional load securing is not just about a single securing device. What matters is the interaction between packaging, the load unit, the vehicle body, and the securing method.
Positive locking means: The load is positioned as closely as possible without gaps against the front wall, side walls, other cargo, or suitable securing aids. Empty spaces are avoided or filled using suitable dunnage or blocking materials.
Frictional securing means: The load is pressed against the loading surface by means of pre-tensioning so that friction prevents it from sliding. A typical example is tie-down lashing with lashing straps.
Strapping primarily works within the load unit itself. It ensures that multiple individual items form a more stable unit. This load unit can then be additionally secured using positive locking, lashing straps, anti-slip mats, dunnage bags, edge protection, or other securing equipment.
In practice, this means: A properly strapped pallet is easier to handle and less susceptible to individual boxes shifting. Nevertheless, the pallet must still be secured inside the vehicle or container so that it can withstand the forces generated during transport.
Typical Applications for Strapping
1. Securing Pallets for Shipping
The most common application is pallet strapping. Boxes or packages are arranged on a pallet, tensioned with strapping, and stabilized against lateral movement. PET strapping is particularly popular when the pallet is heavier or will be transported over longer distances.
2. Bundling Boxes and Packages
Lightweight shipments, stacks of cardboard boxes, or packaging units can be bundled cost-effectively using PP strapping. This makes order picking, warehousing, and shipping easier.
3. Securing Pipes, Profiles, and Long Goods
Round or elongated goods require securing materials that adapt to their shape. Textile strapping or composite strapping can offer advantages here because they are flexible and gentle on surfaces.
4. Securing Building Materials and Heavy Industrial Goods
Bricks, blocks, timber packages, metal parts, or machine components place greater demands on breaking strength and edge protection. PET, PES, or composite strapping is frequently used for these applications.
5. Preparing Export and Container Packaging
Long transport routes, moisture, climatic fluctuations, and repeated handling require robust, weather-resistant, and controllable securing solutions. PET and textile strapping are particularly relevant for these applications.
How to Strap Correctly: Step by Step
Safe strapping does not begin with tensioning the strap, but with preparing the goods. Only a stable load unit can be secured reliably.
- Prepare the goods: Stack packages neatly, remove damaged boxes, and avoid protruding parts.
- Choose the right strapping: Material, width, thickness, and breaking strength must match the load.
- Use edge protection: Edge protection should be used for sharp edges or sensitive surfaces.
- Position the strap correctly: The strapping must run neatly around the goods or pallet and must not be twisted.
- Apply the correct tension: The strap should be tight without damaging the goods.
- Securely close the strap: Depending on the system, the strap is secured using seals, clamps, buckles, or friction welding.
- Inspect the strapping: After closing, check that the strap, closure, edge protection, and load unit are stable.
For frequent use, battery-powered strapping tools can significantly speed up the process. They provide consistent tension, reliable closures and more ergonomic working conditions. For occasional applications, manual tensioning tools or simple strapping kits are often sufficient.
Common Mistakes When Securing Loads with Strapping
Mistake 1: Choosing the Wrong Material
PP strapping is cost-effective, but it is not automatically suitable for heavy pallets. PET is stronger, but textile strapping may be more suitable for highly irregular or sensitive goods.
Mistake 2: Not Using Edge Protection
Sharp edges can damage the strap or distribute the tension unevenly. Edge protectors protect both the strapping and the goods.
Mistake 3: Incorrect Strap Tension
Too little tension will not hold the goods together securely. Too much tension can crush cardboard boxes or damage sensitive goods. The correct tension depends on the goods, strapping material, and packaging.
Mistake 4: Using the Wrong Closure
The strap, seal, clamp, or weld must be compatible. Otherwise, the actual securing performance is determined by the weakest point.
Mistake 5: Confusing Strapping with Complete Load Securing
A strapped pallet is not automatically secured sufficiently for transport by truck. Strapping stabilizes the load unit, but it does not replace complete load securing inside the vehicle.
PET, PP, Textile, or Steel: Which Solution Is Right?
The choice of the right strapping depends heavily on the application. There is no universal solution. The following overview provides guidance.
For lightweight shipping boxes and cost-sensitive standard processes, PP strapping is usually sufficient. For pallets, medium- to heavy-weight packages, and longer transport routes, PET strapping often offers the best combination of strength, cost-effectiveness, and ease of handling.
For heavy, bulky, sensitive, or irregularly shaped goods, textile strapping such as hot-melt, PES, or composite strapping offers additional advantages. Steel strapping is primarily considered where extremely high forces, very sharp edges, or specific industrial requirements are involved.
Accessories: What Is Needed for Professional Strapping?
Depending on the system, suitable unwinder trolleys, tensioning tools, strapping seals, metal clamps, battery-powered strapping tools, edge protectors, and, where necessary, anti-slip materials are used together with the strapping.
When many strapping operations are carried out each day, a battery-powered tool can significantly increase productivity. For occasional use, a manual tensioning and sealing tool is often sufficient.
For consistent processes, clear internal guidelines are recommended:
- Which strapping is used for which product group?
- What strap tension should be applied?
- Which clamps, seals, or buckles are required?
- When is edge protection mandatory?
- Who checks the strapping before loading?
Such standards reduce errors and help ensure consistent quality in warehousing, shipping, and loading operations.
Sandax: Strapping, Tools, and Accessories from a Single Source
Anyone looking to secure loads professionally should not consider strapping in isolation. The right combination of strapping, tools, closures, edge protection, and supplementary load securing equipment is what matters.
This makes it possible to find a cost-effective and safe solution for virtually any load unit – from lightweight shipping boxes to heavy industrial pallets.
Conclusion: Strapping Is More Than Packaging
Strapping is a key component for creating stable load units and ensuring safe transport processes. It bundles, secures, and protects goods – provided that the material, breaking strength, closure, tool, and application are correctly matched.
PP strapping is a cost-effective solution for lightweight packages. PET strapping is usually the better choice for pallets and heavy goods. For particularly heavy, bulky, or sensitive loads, textile strapping such as PES, hot-melt, or composite strapping provides a high level of safety and flexibility.
Anyone who wants to secure loads professionally should not consider strapping in isolation. Only the combination of positive locking, friction, edge protection, lashing equipment, anti-slip mats, and suitable vehicles creates a truly reliable load securing system.
FAQ: Strapping for Load Securing
Which Strapping Is Suitable for Pallets?
PET strapping is frequently used for pallets because it has a high breaking strength, retains its shape, and is well suited to medium- and heavy-weight packages. Textile strapping may be suitable for very heavy or bulky goods.
Which Is Better: PET or PP Strapping?
PP is more cost-effective and well suited to lightweight packages. PET is stronger, retains tension better, and is more suitable for pallets, heavy boxes, and longer transport routes.
Can Strapping Replace Lashing Straps?
Not in general. Strapping primarily stabilizes the load unit. Additional lashing straps, anti-slip mats, positive locking, dunnage bags, or other load securing equipment may still be required to secure the load inside the vehicle.
When Is Textile Strapping Required?
Textile strapping is suitable for heavy, bulky, sensitive, or irregularly shaped goods. It is flexible, gentle on surfaces, and can achieve high breaking loads.
Why Is Edge Protection Important When Strapping?
Edge protection prevents the strap from being damaged by sharp edges or cutting into the goods. At the same time, it distributes the forces more evenly.
What Role Does Breaking Strength Play?
Breaking strength indicates the tensile load a strap can withstand. It must match the load, packaging, transport stresses, and closure method. The complete system of strapping, closure, and application is always decisive.
Is PET Strapping an Alternative to Steel Strapping?
In many applications, yes. PET strapping is rust-free, easier to handle, and sufficiently strong for many heavy pallet loads. However, steel strapping may still be required for extreme loads or goods with very sharp edges.