How To Check Whether There Is Air Leakage In The Modified Atmosphere Packaging Machine?

After purchasing Map Packaging Equipment, you need to understand the knowledge of modified atmosphere packaging in the packaging process. Understand why modified atmosphere packaging machines need leak detection: For modified atmosphere packaging that relies on improved gas to achieve freshness, leakage is a disaster. Studies have shown that even the smallest leak can cause huge damage. Take the modified atmosphere packaging of cooked food as an example.

Typically, the ratio of the mixed gas is 30% CO2 + 70% N2. In such a packaging that needs to eliminate oxygen, even a leak hole of tens of microns will allow oxygen to invade, and within three days, the oxygen content is high enough for bacteria to grow like legs. Enterprises that want to extend the shelf life of fresh products and gain more consumers by throwing out the big trick of modified atmosphere packaging will not succeed if there is a leak in the packaging.

What is the concept of a leak of tens of microns? It is as wide as the radius of a hair (if you have hair). Yes, even such a tiny leak will destroy everything you have. It's really terrible. If your package cannot survive a leak with a diameter of 50 microns, the oxygen content in the package will reach 10% after 70 hours, at which point microorganisms such as mold and bacteria will begin to grow under the action of oxygen.

Even more unfortunately, the time it takes for manufacturers to transport products to physical stores for sale is also those dozens of hours. In other words, the shelf life of the products that have just been put on the shelves is at risk, not to mention food safety issues. Disadvantages of water baths for modified atmosphere packaging machines Therefore, leak detection is an indispensable quality inspection project for enterprises, and the well-known water bath method is a simple and economical leak detection method: the staff first puts the package in water and extracts the air on the water surface.

The vacuum effect formed will promote the formation of bubbles in the place where there is a leak, and the staff will use this as a signal to judge whether the package is leaking. But this method of testing vision has many problems: the air on the surface of the package may form bubbles, and it may be difficult for the staff to distinguish the real leak point individual differences: the water bath method is a destructive test, which is a bit wasteful for high value-added products. For hygiene reasons, it is not suitable to introduce water into the food processing area. The water in the water bath needs to be very clean.