A Dart Impact Tester is a tool used to measure the impact resistance of a material, typically a plastic film or sheet. The tester typically consists of a dart, a weight, and a mechanism to drop the dart onto the material being tested.

The Dart Impact Tester works by dropping the dart onto the material being tested, simulating the impact of a sharp object on the material. The force of the impact is measured, and the material's ability to resist impact is determined.

The Dart Impact Tester is used in the plastics industry to evaluate the impact resistance of plastic films and sheets. It is also used in other industries such as packaging, printing, and automotive, to test the impact resistance of materials used in those applications. Based on test standard ASTM D1709-16A.