ASTM D3474

Test Materials: ASTM D3474 is primarily used to evaluate the torque resistance of closures on containers, such as bottles, jars, and tubes. The test materials include the container and closure system, which must be properly prepared according to the standards. Typically, containers are filled with a suitable medium to simulate their typical contents, while the closures are applied as they would be in normal use, ensuring a consistent testing environment.
Test Process: The process involves securing the container with the closure in a torque testing machine, which applies a twisting force. The closure is rotated in a controlled manner until it reaches the point of slippage or failure. The torque required to achieve this is measured and recorded, following the specific conditions outlined in ASTM D3474. Testing is typically done at room temperature and under controlled environmental conditions to ensure accurate results.
Test Result Interpretation: The torque value recorded during the test reflects the closure’s ability to resist accidental opening or loosening. A higher torque value indicates better sealing integrity, while lower values may suggest potential issues with closure performance. Results are compared against established standards or product specifications to determine if the closure meets the required performance criteria. Test results are often used to assess the quality of the packaging and to ensure safety and durability during transportation and use.