Standardized Evaluation
Compression testing of transport packaging relies on a globally recognized protocol to determine the resistance of filled or empty cases to vertical crushing forces. The iso 12048 bct standard establishes the test method for measuring the compression resistance of shipping containers. It applies a continuous load to the container using a motor-driven platen until failure occurs or a predetermined limit is reached.
This standard governs the testing parameters of speed and environmental conditioning. It ensures that compression testing is repeatable across different laboratories and supplier networks by defining the precise tolerance of the force sensors and the atmospheric chambers.
Compression Method
Executing this procedure involves placing the test specimen centrally on the lower platen of the compression machine. The upper platen then descends at a constant rate of ten millimeters per minute to compress the box. This movement generates a force-deflection curve that illustrates the structural behavior of the container.
The peak force recorded before the box collapses is the compression strength of the case.
Deflection Limit
Measuring the deformation of the box is as critical as recording the maximum force because excessive deflection can damage the internal contents. The test stops when the container can no longer support the applied load. This deflection measurement helps designers optimize the crease lines of the corrugated sheet.
