Introduction of sealing performance test methods and testing instruments for wet wipes packaging
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As a daily consumer product, wet wipes have become a necessity in people's lives because of their own hygiene and ease of use. When purchasing a wet wipe product, the sealing of the package must be good, and there should be no air leakage, liquid leakage, damage, etc. It is best to purchase a wet wipe that is sealed with a seal.
The State has issued the "GB/T 27728 Wet Wipes" standard for wet wipes products. The standards clearly stipulate the inspection and sealing performance of wet wipes products according to GB/T 15171, which shows the necessity and importance of their testing.
Here, Sanquan Zhongshi combined with MFY-05 seal tester mainly introduces the sealing performance test method of wet wipes packaging to facilitate the relevant testing of enterprises!
Wet towel packaging sealing performance test method and steps:
A1, test principle description
By vacuuming the vacuum chamber, the sample immersed in water is subjected to internal and external pressure difference, and the gas escape or water infiltration in the sample is observed to determine the package sealing performance of the sample.
A2, test device
A2.1 Sealing tester: in accordance with GB/T 15171, with a vacuum tank (see Figure 1), the vacuum can be controlled between 0 kPa and 95 kPa, the vacuum accuracy is 1 level, and the vacuum holding time is 0.1 min. It can be set arbitrarily within 60 minutes.
A3, test sample
A3. 1 The specimen shall be a representative flexible package containing the actual contents or their simulants.
A3. 2 The sample of the same batch (times) test shall be no less than 3 packs.
A4, test procedure
A4.1 Open the vacuum tank and inject a proper amount of water. After the injection amount is released and the cover is closed, the water level in the tank is higher than about 10 mm on the side of the porous plate.
A4.2 Turn on the compressor and seal tester, turn on the positive pressure air, and set the test parameters of the seal tester: test vacuum is 10 kPa ± 1 kPa, vacuum hold time is 30 s.
A4.3 Place the sample in a vacuum tank and test the top of the vacuum tank.
A4.4 Observe the leakage of the sample during vacuuming and vacuum holding, and whether there are continuous bubbles. A single isolated bubble is not considered a sample leak, and bubbles generated by the outer package accessory during the test are not considered leaks.
Note: As long as the leakage of all parts of all samples can be observed during the test, two or more samples can be measured at one time.
A4 .5 After the test is stopped, open the sealing cover, take out the sample, wipe the surface water, and open the seal to check whether there is test water infiltration inside the sample.
A4 .6 Repeat steps A4.3 through A4.5 to determine 3 samples per sample.
A.5, evaluation of test results
The three samples were not infiltrated during the vacuuming and vacuum holding, and no water was infiltrated during the opening inspection. The project was qualified; if two or more of the three samples were unqualified, the project was judged not to be If one of the three samples fails, the three samples are re-measured. After the three measurements are re-measured, the item is judged to be qualified, otherwise it is judged as unqualified.
Negative pressure seal tester MFY-05 type
product manual:
Compliance with standards: GB/T 15171-1994 Test method for sealing performance of flexible packages
ASTMD 3078-94 Standard Test Method for Air Leakage in Flexible Packaging by Exhaust Gases
Functional use:
Through the test, it can effectively compare the sealing process and sealing performance of the soft package. It is suitable for the sealing test of flexible packaging parts and plastic bottles, cans and boxes, and hoses for food, packaging and pharmaceutical, medical equipment, automobiles, daily chemicals, electronic components and other industries.
Instrument principle:
The compressed air is used as the power source, the vacuum generator is used as the energy conversion component, and the high-precision pressure sensor is controlled by the microcomputer to realize the vacuum speed, high precision, digital setting parameters, and the test process program and other excellent performance.
Technical characteristics:
1. Microcomputer control, LCD display, PVC operation panel
2. Digital preset test vacuum and vacuum hold time
3. Imported pneumatic components
4. Automatic constant pressure air supply
5. End the test automatically
6. Automatic backflush unloading
Technical Parameters
1. Vacuum degree: 0- -95KPA
2. Vacuum accuracy: level 1
3. Vacuum holding time: 0.1-60min
4. Inlet pressure: 0.25-0.6 Mpa (2.5-6 kgf/cm2), user-supplied
5. Vacuum chamber size: diameter 300 x390mm
6. Vacuum tube wall thickness: 15mm