Sealing System: Once the pouches are filled, they need to be sealed. This element assures the pouches are airtight, keeping the contents new. Distinct sealing tactics, like heat sealing or ultrasonic sealing, may be used according to the components included. MAP removes oxygen from packaging by altering atmospheric gases’ https://www.linpack.com/news/choosing-the-right-tray-sealing-machine-for-your-business