In the world of e-commerce and logistics, a box isn’t just a container; it’s your product’s armor. The biggest risk during transport and storage isn’t side impacts, but compression. Imagine hundreds of boxes stacked one on top of the other: if the bottom box gives way, the entire stack collapses. This is where the most important metric in packaging comes into play: the Edge Crush Test (ECT).
What is ECT and How is it Measured?
The Edge Crush Test is an industry standard that measures the maximum force a piece of corrugated cardboard can withstand before collapsing, when the force is applied perpendicularly to the flutes (the internal channels).
The ECT value is expressed in units of force per unit of length (often in pounds per linear inch, or kN/m in the metric system). A value of, for example, ECT 32 means the cardboard can withstand 32 pounds per inch of pressure before failing.
The Advantage of ECT Over Mullen Strength (Bursting Test)
Historically, box quality was measured by the Mullen Test (Bursting Test), which assesses resistance to puncture. However, in the modern logistics environment, vertical compression strength is far more relevant for product safety.
ECT-rated boxes are designed to offer higher stacking with less material.
ECT in Transportation: Preventing Collapse
The ECT number is directly related to the box’s maximum stacking capacity. If you know the weight of your product and the maximum height your pallets will be stacked in the warehouse or truck, you can calculate the minimum required ECT strength.
Key Tip: Never use a box with a low ECT for a heavy product or if you know it will be stacked at the bottom of a column. Investing in the correct ECT is the best insurance policy against damage, returns, and the poor reputation that comes with a broken product.
Conclusion:
ECT isn’t just a number on your box’s label; it’s a promise of durability in the complex journey of the supply chain. To optimize your logistics, ensure product integrity, and enhance your customer’s unboxing experience, always prioritize the Edge Crush Test when selecting your corrugated cardboard packaging.
With Cyecsa / Kibox, you will have the peace of mind that you are working with a company that cares ecologically, socially, and economically.
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