A carton that performs well in a packhouse may not be the right carton for a long road journey.
For businesses moving fresh produce and other goods by road, packaging must withstand stacking, vibration, handling and changes in storage conditions. This is especially important in Kenya, where a shipment may pass through several collection points, transport stages and loading bays before reaching its final destination.
Choosing a carton, then, is about more than size or appearance. The real question is whether the packaging has been specified for the journey.
When working with a packaging company in Kenya, the conversation should begin with three things: the product, the route and the conditions the carton will face along the way.
Start with Measurable Carton Performance
When speaking with a packaging supplier, move beyond descriptions such as “heavy-duty,” “premium” or “export quality.” Ask for measurable specifications that show how the carton is expected to perform.
Edge Crush Test (ECT) measures the amount of vertical force corrugated board can withstand when pressure is applied to its edge. It is an important indicator because it helps estimate the carton’s resistance to stacking pressure.
Box Compression Testing (BCT) measures how the completed carton performs under a top-to-bottom load. This gives a more direct indication of how the finished box may behave when cartons are stacked during storage or transport.
These figures provide a useful starting point, but they do not tell the whole story. Moisture, vibration, poor stacking and repeated handling can all weaken cartons or reduce their load-bearing capacity.
The carton should therefore be specified for the product, packed weight, route and handling conditions, not selected solely because it carries a particular strength rating.
Ventilation Can Reduce Strength
For fresh produce, ventilation adds another design consideration.
The Agriculture and Food Authority’s guidance for avocados states that packaging should protect fruit from compression, impact and vibration during transport and handling. It also requires boxes to be clean, in good condition and properly ventilated.
Ventilation holes can help with airflow, but they can also affect the strength of a corrugated carton. Research on cartons with different sidewall cutout areas has found that compression strength generally decreases as the cutout area increases.
For exporters, the challenge is to balance ventilation with the strength required for stacking and transport. A standard ventilated carton may not be suitable for every product or route. The design should reflect the fruit, packed weight, pallet configuration and expected journey.
DHL’s guide to packaging fragile items for global shipping offers further advice on selecting packaging that can cope with real transport conditions.
Specify the Carton for the Route
The same product may require different packaging depending on how it is transported.
A carton moving directly from a packhouse to an airport may experience a different handling pattern from one travelling by road to several retailers before reaching its final destination. A longer road journey can involve repeated loading and unloading, prolonged vibration and changes in how cartons are stacked.
The pallet or unit load also matters. Individual cartons may perform well in isolation but become unstable when mixed sizes, uneven stacking or poor pallet configuration are introduced.
This is particularly relevant for businesses involved in avocado farming in Kenya, flower farming in Kenya and other horticultural supply chains. In these operations, packaging is part of a wider handling, storage and export process.
The Agriculture and Food Authority specifically requires avocado packaging to protect the fruit from compression caused by stacked materials, as well as from impact and vibration during transportation, loading and unloading.
A good carton specification should account for the full journey, not just the point at which the carton is packed.
What to Ask a Packaging Company in Kenya
Before placing a large order, give the supplier enough information to recommend or develop the right carton.
Ask about the carton construction and ECT specification instead of relying on general terms such as “strong” or “premium.” Explain what the carton will carry, its packed weight and how it will be stacked.
Describe the route in practical terms. Will the shipment travel by road? How long does the journey usually take? Will the cartons be loaded and unloaded several times? Will they be stored in humid conditions or moved between different environments?
For ventilated produce cartons, ask how the ventilation pattern affects compression strength and whether the proposed design has been tested.
It is also important to discuss consistency between a trial order and full production. A carton that performs well in a small test run must continue to meet the same specification when thousands of units are produced.
Check the Applicable Kenya Standards
Kenya has a standards framework for packaging. The Kenya Bureau of Standards (KEBS) Packaging Technical Committee covers areas including packaging dimensions, performance requirements, testing and environmentally responsible packaging.
For horticultural exporters, it is worth asking which applicable standard the supplier’s cartons are manufactured or tested against. Not every carton described as an “export carton” will meet the same requirements.
This becomes even more important when packaging forms part of an export supply chain and the overseas buyer has its own specifications. Confirming the requirements early can help avoid delays, rejected shipments and unnecessary repacking.
When Does a Custom Carton Specification Make Sense?
Off-the-shelf cartons may be suitable for straightforward, low-volume distribution. A custom specification becomes more valuable when a business is regularly dealing with crushed cartons, damaged produce, unstable pallet loads or packaging that does not fit the operation.
The aim is not to choose the strongest carton available. It is to select a carton that is strong enough for the product, packed load and route, without paying for material that is not needed.
The right packaging can help protect products, reduce avoidable losses and make road distribution more reliable. It can also support smoother movement through the wider export process.
Once the packaging is ready, the next step is preparing the shipment for cross-border transport. DHL Express provides international shipping and logistics solutions for Kenyan businesses, including tools for creating and managing shipments and business account options for regular shippers.
Ready to ship internationally? Open a DHL Business Account today.
FAQs
ECT, or Edge Crush Test, measures how well corrugated board resists crushing. It gives you a clear, measurable way to compare cartons rather than relying on broad descriptions such as “heavy-duty” or “export quality.”
For businesses shipping larger or heavier consignments, choosing the right carton specification can help reduce damage during handling, storage and transport. For practical guidance on selecting packaging for demanding shipments, read Big Cargo, No Worries: Smarter Packaging for Kenyan Businesses.
Ventilation is essential when packing fresh produce such as avocados. It helps manage airflow and can support product quality during transport. At the same time, every opening added to a corrugated carton can reduce its compression strength.
The carton design should therefore provide sufficient ventilation while still supporting the avocados and withstanding stacking, handling and movement along the distribution route. For wider advice on protecting goods from damage during handling and transit, see Packaging Fragile Items for Global Shipping: How to Do It Right.
Before placing an order, ask about the carton’s construction, ECT rating, dimensions, stacking requirements and any testing completed on the proposed design. It is also important to share details about the product, packed weight, delivery route and expected handling conditions.
The more information your packaging supplier has, the easier it will be to recommend a carton that suits your shipment. DHL’s How to Avoid Common Pitfalls of Shipping Internationally also highlights packaging considerations that businesses should review before sending goods across borders.
A custom carton specification may be worthwhile if you are dealing with repeated damage, unusual product dimensions, heavier loads or a distribution route that places greater demands on the packaging.
The strongest carton is not always the best choice. The goal is to select a design that protects your goods without adding unnecessary material, weight or unused space. For practical guidance on packaging larger or more demanding shipments, read Big Cargo, No Worries: Smarter Packaging for Kenyan Businesses.
Packaging can affect both the weight and the dimensions of your shipment. An oversized carton may take up more space in a vehicle or aircraft, even when the actual product inside is relatively light.
For air and express shipments, carriers may calculate charges using volumetric weight as well as the shipment’s actual weight. Choosing packaging that fits your goods properly can help you use transport space more efficiently. DHL’s Maximise Your Shipping Value with DHL in Kenya explains how shipment dimensions, packaging and chargeable weight can affect your shipping costs.
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