What Is an Edge Crush Tester and How Does It Measure Box Strength?
An Edge Crush Tester (ECT) is a device used to measure the compressive strength of corrugated cardboard by testing the ability of its edge to withstand pressure before it fails. The test evaluates the box's ability to resist crushing when stacked or subjected to external forces. In the process, a sample of corrugated material is placed upright between two plates, and pressure is applied to the edges until the material collapses. The result, expressed as the edge crush strength (measured in pounds per inch or kN/m), helps determine the durability and performance of packaging materials under load. This test ensures the packaging will protect contents during transportation and handling.
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