Plastics have a wide range of properties and properties that determine their quality, such as molecular elasticity. It determines the impact strength of polymer materials. This particular feature is important when evaluating a product's stiffness, which describes how strongly a plastic can withstand the forces applied to its surface. Typically, plastic films are used to meet packaging requirements for products. During shipping or handling, these films experience significant wear and tear. Therefore, the importance cannot be overemphasized that the standard test method for calculating the impact strength of plastic films is carried out using the Dart Impact Tester.
The role of Dart impact Tester in the quality test of plastic film
Plastics have a wide range of properties and properties that determine their quality, such as molecular elasticity. It determines the impact strength of polymer materials. This particular feature is important when evaluating a product's stiffness, which describes how strongly a plastic can withstand the forces applied to its surface. Typically, plastic films are used to meet packaging requirements for products. During shipping or handling, these films experience significant wear and tear. Therefore, the importance cannot be overemphasized that the standard test method for calculating the impact strength of plastic films is carried out using the Dart Impact Tester.
How to conduct impact resistance test?
Evaluation and understanding of the impact resistance of packaging films plays a very important role, as this material is sure to be subjected to shocks during shipping and loading. This test method is widely carried out in research and development departments, laboratories, packaging industry, inspection agencies and film manufacturing units, etc., to evaluate the trouble-free weight that their products can withstand. The tests of the manufactured films are considered as they give an estimate of what the consumer may encounter while using the product.
The dart impact test is a commonly used test procedure for evaluating impact strength. Place a weighted ball-tipped dart onto the tightly clamped film sheet and visually inspect the sample for failure. Dart impact values depend on film thickness. Since dart impact was not evaluated in any film orientation, it is sensitive to orientation effects in both directions.
Presto's Dart Impact Tester is a proficient testing instrument used to evaluate the impact strength of plastic films when a free-falling dart is dropped on them. Under certain conditions, the force of a falling dart can crack the film, rendering it useless. The darts are designed with a hemispherical head and held in place by a strong magnetic dart holder. It complies with various testing standards of IS 2508:1984 (R2003), ASTM D1709-16A.
Important features to look for:
Electromagnetic hold and release mechanism with dart drop.
The dart drop height can be easily adjusted using the flexible clamp.
The built-in digital counter can record the number of drops in real time during the test.
The circular ring clamp provides zero product slippage.
The shielding structure provided prevents darts from falling out of range.
