One of the important functions of self sealing bags is sealing. It is precisely because self sealing bags have excellent sealing properties that they can be widely used in food, agriculture, industry and daily life. Therefore, sealing is an important value of Jinan self sealing bags.
In the production process of self sealing, due to batch production, large quantity planning and many production links, there may be leakage or penetration during hot sealing, or there may be defects, cracks, pinholes, etc. in the material itself, which may form invisible holes or uneven hot pressing, which may form the weakness of thin strength. In daily life, if the self sealing pocket is damaged accidentally in the process of using the self sealing pocket, then the self sealing pocket will lose its value. These elements will directly affect the sealing of the self sealing bag. Once damaged, the manufacturer of sterile self sealing bag thinks that the self sealing bag will lose the significance of maintaining the product.
① Water vacuum detection method:
The vacuum environment is formed by vacuuming the air in the vacuum chamber to make the inner and outer air pressure difference of the self sealed bag immersed in water. Check the gas overflow and the water inflow in the self sealed bag, and determine the sealing function of the bag according to these two parameters.
② Vacuum survey method:
Similar to the above method, the vacuum chamber air is pumped to form a vacuum environment, causing a pressure difference between the inside and outside of the self sealing pocket. The sealing function of the self sealing pocket is judged by investigating the inflation of the self sealing pocket and the recovery of the self sealing pocket after the vacuum is released.
③ Water free infiltration method:
This is a simple and applicable testing method. We do not need special environment and things. We can also use the anhydrous penetration method to test the sealing of the self sealing bag in daily life. Inject an appropriate amount of water into the self sealing bag, and then place the self sealing bag with water on the dry paper after sealing (it is better to have a special test paper). Investigate the water leakage from the self sealing bag to the outside. Test both sides, During the test, pay attention not to inject corrosive liquid into the self sealing pocket. The general self sealing pocket does not have the function of anti-corrosion.
The primary factor to determine the quality of the self sealing bag is the sealing of the self sealing bag. Once the sealing of the self sealing bag is lost, it is no different from the general plastic bag, so the sealing detection is very important. The above is the relevant method. If you have any doubt, come to our website http://bjmj111.com Consult!