Introduction of test method and test instrument for condom package integrity

The integrity of condom packaging is an important quality evaluation method to test condom packaging to ensure the lubricant does not leak Because the condom package itself has a gap, which may lead to lubricant leakage, this test is very important As an international testing instrument and testing service provider, Labthink blue light, combined with professional testing instruments, briefly introduces the test method of condom packaging integrity, so as to provide relevant units with an understanding of condom packaging integrity testing technology 1 Executive standards GB 7544-2004, ISO 4074:2002 technical requirements and test methods for natural rubber latex condoms 2 Instruments and requirements mfy-01 sealing tester, in which the vacuum tank (vacuum box) can withstand a atmospheric pressure difference, and the situation in the tank can be observed during the test According to the standard requirements, vacuum pump is used to vacuum the tank directly This test method will affect the control of vacuum degree due to the pulsation of the vacuum pump during operation, and then it is easy to produce misjudgment The mfy-01 sealing tester of Labthink blue light uses a vacuum converter to make the vacuum tank form a stable vacuum, which ensures the degree of the equipment It is a high-precision instrument for testing the complete performance of condom packaging, and it does not need to be equipped with a vacuum pump, only needs to connect the pressure air source of the factory or laboratory 3 Principle of condom package integrity test By vacuuming the vacuum chamber, the internal and external pressure difference of the sample immersed in water (Zui is good for adding dye) is generated, and the gas escaping condition in the sample is observed, so as to determine the sealing performance of the sample; by vacuuming the vacuum chamber, the internal and external pressure difference of the sample is generated, and the sealing performance of the sample is determined by observing whether the sample is immersed in water after expansion and vacuum release The following is the schematic diagram of the test principle: 4 Test method for the integrity of condom packaging: fill the vacuum tank with water (fill with dye), immerse the condom of a single package into the vacuum tank, put the back cover on the upper pressing plate, and the distance between the condom and the water surface is required to be 25 mm Set the vacuum pressure of the vacuum tank to 20 ± 5kpa, and the vacuum holding time to 1min Start the test When the vacuum degree increases, observe the condom packaging to generate continuous bubbles to represent the leakage Note that the independent bubbles cannot be confirmed as leakage, After 1 min, if there is no continuous bubble, open the cover and check whether the condom package enters to further confirm whether there is leakage 5 Results evaluation 1) in the vacuum increasing or holding stage within the specified time, if there is continuous bubble, it indicates that leakage exists, and the sample is unqualified 2) if there is test liquid in the package at the end of the test, it is unqualified 3) if there is no continuous bubble, and no test liquid is found in the package, the package is qualified