Testing steps for the sealing performance of bottle caps

Testing steps for the sealing performance of bottle caps
1. According to the requirements of GB/T17876-1999 standard, use the rated torque to seal the bottle cap on the bottle mouth of the container,
Those with anti-theft rings should be removed in advance. It is best to use a torque tester to test the locking force of the cap.
2. Prepare the sample to be tested, and then install the prepared sample to be tested on the test accessory.

3. Fix the test accessory with the sample to be tested in the sealing performance test device of the plastic anti-theft bottle cap. The sealing tester has a sample fixing bracket, which can conveniently and firmly fix the sample in the experimental device,

so as to avoid irregular movement during the process of pressurization and stress. The bottle cap sealing performance test device is filled with clean water,
The height overflows the sample holder. Then close the top cover and fix it.
4. Turn on the air source and adjust the pressure to the pressure required by the container under test according to relevant standards. The pressurized state was then maintained to keep the cap under water for 1 minute.
5. Observe the test results. Check whether there are air bubbles in the water or whether there is water in the bottle during the pressurized time to judge the air leakage of the bottle cap.
The sealing performance of the bottle cap is not only an important indicator for evaluating whether the bottle cap is qualified, but also can not only scientifically evaluate the sealing performance of the container, but also reasonably control the opening of the bottle cap under the premise of ensuring the safety of the packaging. Try to avoid the inconvenience caused by excessive control of sealing performance.