The national standard for bottle cap sealing performance testing has clear requirements for bottle cap sealing performance testing in the bottle cap testing standards. According to the different uses of bottle caps, there are different regulations for the measurement methods of non-gas caps and gas caps. If there is no air cap, the anti-theft ring (strip) needs to be cut off from the bottle cap, and used on a rated torque seal of not less than 1.2NM, tested with a seal tester, pressurized to 200kPa, and kept under water for 1 minute to observe whether there is any leakage Air or tripping;pressurize the cap with air to 690kPa, keep the pressure underwater for 1 minute, observe whether there is air leakage,
then increase the pressure to 1207kPa, keep the pressure for 1 minute, and observe whether the cap is tripping. In the above-mentioned national standards, we can see that the test of the sealing performance of the bottle cap is carried out under a certain torque force of the bottle cap. Let's briefly talk about the relationship between the torque force of the bottle cap and the sealing performance of the bottle cap. The torque of the bottle cap is the main factor affecting its sealing performance. Too much torque will bring great difficulties to the opening and locking of the bottle cap and reduce the convenience of use, while too small torque will reduce the sealing of the container. performance, which may lead to leakage of the product during transportation. Today's packaging design needs to provide more convenience for fast consumption, and easy opening of bottle caps is one of the goals to be achieved.
However, while reasonably controlling the ease of opening of the bottle cap, attention must be paid to testing the sealing performance that is closely related to it, otherwise it will bury hidden dangers for leakage due to insufficient torque. It can be seen that the sealing performance of the bottle cap is also a key detection index to realize the convenient consumption of the container.
Post time: Jan-09-2023