Key points for testing transport cushioning materials

The function of transport cushioning materials is not simply to fill gaps; their core lies in the systematic management of dynamic mechanical energy. When packaged goods experience drops, vibrations, or compression in the logistics environment, the cushioning material, through its own deformation, crushing, or rebound processes, controls the peak impact acceleration acting on the product below a safe threshold and extends the impact duration to a range that the product structure can withstand. The efficiency of this energy conversion and dissipation process directly determines whether the packaged product can withstand transportation risks.

Evaluating the performance of cushioning materials requires moving beyond a sole reliance on the material's static properties and focusing instead on its dynamic response characteristics. Key tests typically begin with the determination of the material's basic physical parameters, such as density, resilience, and compression set. These parameters form the underlying foundation of the material's performance but are insufficient to predict its behavior under actual impact. More crucial tests are static compression tests and dynamic cushioning performance tests. Static compression tests obtain the material's stress-strain curve, revealing its support and deformation characteristics under slow loading, which is related to the long-term stability of the packaging under stacking pressure.