One of the most common specifications that our customers follow is ASTM D882 which is the Standard Test Method for Tensile Properties of Thin Plastic Sheeting. This test is very similar to the common ASTM D638 test whereby plastic material is pulled until in breaks in order to measure elongation, tensile modulus, tensile yield strength, and tensile strength at break. However, it is designed specifically for thin sheeting and film less than 1 mm (0.04″) thick.
The nice part about ASTM D882 is that the specimens are rectangular strips of film and are not “dumbbell” or “dog bone” shaped. This shape means that you don’t need to use an extensometer to measure the elongation as the system’s built in crosshead displacement indicator is sufficient. This reduces the cost of the testing system and simplifies the testing process.
The video below shows an ADMET eXpert 7601 Universal Testing System performing the ASTM D882 tensile and elongation test. This system also performs tear, puncture, peel, cling, and coefficient of friction tests.