**7.6 Tear resistance test**

The complicated function of a film's final resistance to rupture is its tear resistance. The tear resistance value is the maximum force necessary to rip the film. The plastic industry is usually blamed for this test. The loading rate used is 2 in/min, which is intended to quantify the degree of force necessary to rip the film specimen. The highest amount of force required for tearing is usually observed around the tearing commencement, and this number is referred to as tear resistance value [70].
