How to test the tightness of PET plastic bottle caps

by:Lisson     2021-04-07
Information summary

Many people worry that the sealing performance of pet plastic bottle caps will be very bad. If the goods are damaged during transportation, it will not be good. I have to admit that this is a problem. Various manufacturers have also carried out a review of this problem. A series of…




Many people worry that the sealing performance of pet plastic bottle caps will be very bad. If the goods are damaged during transportation, it will not be good. I have to admit that this is a problem. Various manufacturers have also carried out a review of this problem. A series of tests have made consumers feel relieved.
In the testing standards for PET plastic bottle caps, there are clear requirements for the sealing performance of bottle caps. According to the different uses of bottle caps, there are different regulations for the measurement methods of the airless caps and the air caps. If there is no air cap, cut off the anti-theft ring (strip) of the bottle cap, and use it to seal with a rated torque not less than .NM. Test with a seal tester, pressurize it to kPa, keep the pressure under water for minutes, and observe whether there is air leakage Or trip; pressurize the air-containing cap to kPa, keep the pressure under water for a few minutes to observe whether there is air leakage, then increase the pressure to kPa, keep the pressure for a few minutes, and observe whether the cap is tripped.






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