ISO Plastics Film and Sheeting – Determination of Impact Resistance by the Free-Falling Dart Method. ISO. First edition. Plastics film and sheeting -. Determination of impact resistance by the free-falling dart method -. Part 2: Instrumented. Buy ISO (R) PLASTICS FILM AND SHEETING – DETERMINATION OF IMPACT RESISTANCE BY THE FREE-FALLING.
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Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.
Drop Dart ASTM D1709, ISO 7765
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Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Falling dart impact is a traditional method for evaluating the impact strength or toughness of a plastic film.
This test uses a single dart configuration and a single iiso height, while varying the weight of the dart.
Test results can be used either as a quality control evaluation or for end use comparisons. Depending upon the expected impact strength of the test sample, either Method A or Method B is chosen. The method defines the dart size and isi drop height for the dart. A number of test samples are then impacted to determine an appropriate starting point for the weight of the dart.
The test specimen is clamped securely in a pneumatic ring at the base of the drop tower. The mounting bracket is adjusted to the appropriate drop height, and the dart is inserted into the bracket. The dart is released to drop onto the center of the test specimen. The method to analyze this test data is called the “Bruceton Staircase” method. A series of 20 to 25 impacts are conducted.
If a test specimen passes, the drop weight is increased by one unit. If a test specimen fails, the drop weight is decreased by one unit. Test method A specifies a dart with a 38 mm 1. Film samples that can be cut to mm x mm 9″ x 9″ specimens A minimum of 30 specimens are required for the test Data: Standards can be obtained from appropriate standards authorities.
Drop Dart ASTM D, ISO
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