How to test the air tightness of plastic bottles?
The air tightness of plastic bottles is very important to prevent the deterioration of medicines during the effective period of moisture. It is also an important medium to prevent the influence of light, heat and oxygen on drugs. Therefore, as a pharmaceutical plastic bottle production enterprise, we attach great importance to its air tightness detection. What is the air tightness of medical plastic bottle? Simply put, it is tested in accordance with the relevant national standards. For example, the sealing reliability of plastic capsule bottles is tested by taking a certain number of plastic capsule bottles, filling each bottle with an appropriate amount of glass balls, and tightening the cap. Then place in a container with an air extraction device, immerse in water and vacuum to 27kpa for 2 minutes. There should be no water or bubbles in the bottle. Of course, to ensure the air tightness of plastic bottle capsules through the index, also need some other economic indicators, such as resistance, moisture resistance, oxygen control, etc., to ensure the quality of shelf life products.
How to observe whether the air tightness of plastic bottles reaches the standard?
The market also has the introduction of sealing tester machines. Using the chamber vacuum principle of vacuum cleaner, the medical plastic bottle immersed in water can produce internal and external pressure difference, observe the gas escape inside the sample, judge the sealing performance. : or through the vacuum chamber, make the sample produce internal and external pressure difference, observe the sample inflation condition and the sample shape recovery condition after releasing the vacuum, to determine the sealing performance.
Post time: Feb-17-2023