The ASTM D1596 standard, developed by the American Testing and Materials Association (ASTM), defines a test method for obtaining the dynamic shock cushioning properties of packaging materials through the acceleration-time data obtained from dropping a falling guide roller assembly onto a stationary sample. However, this test method does not address any effect or contribution of outer packaging assemblies.
The data obtained can be used to develop a dynamic cushion curve for a single point or for the specific material being tested. Curves are used to determine the performance of materials under conditions of use or to make comparisons between different materials under certain input conditions. However, caution should be exercised when trying to compare data from different methods or using such data to estimate in-packet performance. Depending on the specific materials involved, the correlation of such data between different procedures or to predict in-pack performance is highly variable. An alternative test method for a possible assessment is contained in the ASTM D4168 Standard test methods for the transmitted shock characteristics of foam-in-place cushioning materials.
The typical dynamic cushioning curve shows how a particular packaging material of a given thickness behaves under different impact conditions. Curves are created by dropping a set of known weights onto a pillow sample from a given height and measuring the amount of shock the weights receive when they impact the foam. In simple terms, this test represents a product dropped on a cushion from a height that may be encountered during transportation.
An idealized cushioning curve represents the cushioning performance of a cushioning material for a given combination of thickness and drop height. The horizontal axis represents a series of static loads to which the packaged items can be applied to the cushioning material, and the vertical axis represents the shock experienced when the cushion is impacted.
Our organization, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, within the scope of ASTM D1596 standard, It also provides standard testing services for the dynamic shock cushioning properties of packaging material.
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