Tear Strength

Technician using Instron® tensile tester.

Tear Strength may be measured by using an Instron®  tensile tester or an Elmendorf tear tester. For the Instron®  test or trouser tear method, samples are cut to a precise rectangular shape with a notch, resembling a pair of trousers. The two "legs" are fastened in the grips of the Instron®  tester and pulled, thereby measuring and recording the force required to tear the sample. For the Elmendorf tear test, a sample is cut to a precise shape and notched. It is fixed into the machine and torn using a pendulum arm. The force required to tear the sample is measured and recorded.The Packaging Technology Center of Cardinal Health offers tear strength testing.

machine tearing packaging to test tear strength

Trouser Tear