ASTM F2338

Test Materials: ASTM F2338 specifies the use of a variety of materials, including polymer films, adhesives, and substrates commonly found in packaging applications. These materials must meet specific criteria to ensure accurate adhesion and seal integrity testing, allowing for reliable evaluations of performance under various conditions.

Test Process: The test involves preparing samples by applying adhesive between the chosen substrates, followed by subjecting them to specified environmental conditions. The samples are then subjected to a peel test using a standardized testing apparatus to measure the force required to separate the bonded materials, simulating real-world conditions.

Test Result Interpretation: Results are analyzed by calculating the peel strength, expressed in units such as pounds per inch (lb/in). A higher peel strength indicates better adhesion and seal integrity, while values below the specified thresholds suggest potential failures in packaging performance, guiding improvements in material selection and design.