Stacking Test

The Stacking Test is an important test in the performance testing of transport packages, used to evaluate the ability of packages to withstand stacking pressure during storage and transportation. It simulates the continuous static load borne by the bottom packages when they are stacked in multiple layers on shelves or in containers. The test typically stacks packages in a certain way, applies a specified load and maintains it for a certain period (e.g., 24 hours), then checks whether the packaging and contents are damaged. Use cases include: when export goods need to comply with international transport packaging standards such as ISTA and ASTM, customers often require stacking test reports; dangerous goods packaging, heavy machinery, electronic products, etc. especially value this test. Precautions: The test load should be calculated based on the actual stacking height and transportation cycle, and environmental factors such as temperature and humidity should be considered; after the test, the packaging should not have deformation or damage that affects safety. Difference from other terms: The stacking test is different from the drop test (which evaluates impact) and the vibration test (which evaluates continuous vibration), as it specifically targets static pressure; it is also different from the compression test, which usually refers to the top compression strength of a single package, while the stacking test focuses more on overall stacking stability. In foreign trade, a stacking test report is a key document to prove packaging reliability, helping to reduce cargo damage during transportation and meet the requirements of importing countries.