Click to zoom
Cometech QC-633 Manual Drop Dart Impact Tester | Plastic Film Impact Resistance (Method A & B)
- Manual drop dart impact tester for evaluating plastic film resistance to free-fall dart impact using Method A and Method B.
- Specimen clamped on a round holder (Ø127 mm) with selectable impact heads for A/B methods.
- Electronic magnet release mechanism helps perform repeatable drop impact testing after setting dart weight and height.
- Typical workflow tests 20 specimens and records broken/unbroken results versus height and dart weight for impact resistance comparison.
Interested?
Request a quote for this product
Overview
Cometech QC-633 Manual Drop Dart Impact Tester evaluates plastic film impact resistance by dropping a selected dart from an adjusted height onto a clamped specimen.
The tester supports both Method A and Method B, using different impact head diameters depending on the selected method.
After a series of tests (commonly 20 specimens), the operator records broken and unbroken outcomes along with the associated dart weight and drop height to compare material performance.
Technical Specifications
Test methods & setup
| Supported methods | Method A and Method B. |
|---|---|
| Specimen holder | Round specimen holder / clamp, diameter 127 mm. |
| Impact head (Method A) | Ø38.1 mm. |
| Impact head (Method B) | Ø50.8 mm. |
| Dart position | Dart is fixed at the top of the tester (released to fall onto the specimen). |
Operation workflow (practical)
- Select the dart (weight) and adjust the drop height before the test run.
- Release the dart using the electronic magnet mechanism to perform the impact on the film.
- Run single-specimen tests and compile results across ~20 tests, recording broken/unbroken condition together with height and dart weight.
Industry & typical use
- Applied industry listed: Plastic (commonly used for plastic film).
- Use case: comparative impact resistance reference for film materials based on broken/unbroken results versus drop conditions.
Support materials (as listed)
- Cometech lists supporting materials such as Test Video, Teaching material, SOP, and Test Case for this product page.