Blocking test/blocking strength
Testing the blocking tendency of plane packaging materials, in dependence on temperature T [°C], pressure p [MPa] and time t [h]. The evaluation is carried out either by manual test or by determining of blocking force Fmax [N] in a shear test using a tensile tester.
If the sample is to be tested under several conditions, please create the test accordingly several times with the respective parameter settings.
In short — AI-generated
The blocking test determines the tendency of two layers of packaging material to stick together under defined conditions of temperature, pressure, and time. The samples are exposed to these parameters in a climate chamber, after which the blocking strength is either assessed manually or measured as the maximum force required to separate the layers in a tensile tester.
The resulting value indicates the risk of material adhesion during storage or transport, which can lead to processing difficulties on packaging lines. Packaging developers use this data to ensure that films remain separable and functional even under high thermal or mechanical loads.
Text is AI-generated; based on test method data curated and verified by Innoform.