Free falling dart impact tester LTMC-A is used for determine the impact mass and energy when plastic film or sheet sample broken at a given height by free-falling ball. Free falling dart i mpact testing machine controlled by microcomputer, automatic calculation sample resistance to i mpact energy and impact curve, specimen clamping fixture, with double cylinder clamping, foot s witch operation, make the whole experiment process simple, convenient . Free falling dart impact tester is widely used in the quality inspection agencies, packaging production enterprises etc.
Before starting the test, choose test method, and estimate an initial mass and Δm. Start the test. If the first specimen fails, decrease the mass of the falling dart by Δm. If the first specimen is not a failure, increase the mass of the falling dart by Δm. Continue the test according to this rule. In brief, increase or decrease by Δm according to whether the former specimen is a failure or not. After 20 specimens, calculate the total number of failed specimens N. If N equals to 10, the test is over. If N is less than 10, add specimens and continue to test until N equals to 10. If N is greater than 10, add specimen and continue the test until the number of non-failure specimens reaches 10. Then the tester calculates the test results automatically according to specific formulas.
impact tester
| Films | Falling dart impact tester used for determine the impact mass and energ y for films |
| Plastic laminated fil ms | It is used for determine the impact mass and energy for plastic laminate d films |
| Paper-based lamin ated films | Used for determine the impact mass and energy for paper-based lamina ted films |
| Aluminized films | It is used for determine the impact mass and energy for aluminized films impact tester |
| Specifications | LTMC-A Falling Dart Impact Tester |
| Test Method | Method A or Method B is optional |
| Test Range | Method A: 50~2000 g Method B: 300~2000 g |
| Accuracy | 0.1 g (0.1J) |
| Specimen Clamp | Pneumatic Clamp |
| Pressure of Gas Supply | 0.6 MPa (outside of supply scope) |
| Specimen Size | > 150 mm x 150 mm |
| Power Supply | 220VAC 50Hz / 120VAC 60Hz |
| Net Weight | 70 kg |
| Instrument Dimension | Method A: 480mm (L) x 470 mm (W) x 1470 mm (H) |
| Method B: 480 mm (L) x 470 mm (W) x 2160 mm (H)（optional） |
Instrument and software cable and mini printer impact tester
Method B
LTMC-A Falling Dart Impact Tester conforms to various national and International standards:
ASTM D1709 JIS K 7124-1 ISO 7765-1
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