People usually use heat sealing, ultrasonic sealing, or tape/glueing. Heat or ultrasonic sealing seals the airtightly to maximize shelf life. You can usually adjust the sealing times and temperatures. Heat sealing is a common method for creating a tight seal. It's all about controlling time and temperature to achieve this. The goal of heat sealing is to extend the product's shelf life. Ultrasonic sealing is better at keeping materials safe from heat and damage. Glueing or taping is great for quick output or when the food material is sticky. Newer equipment often has multiple sealing options, allowing flexibility in switching between methods. You can use both heat sealing and ultrasonic methods to adjust parameters to control seal quality for different materials online. By properly setting up sealing parameters, we can meet the needs of different bag/pouch designs and packaging materials, ensuring efficient airtight seals. Sealing methods give production lines powerful adaptability and flexibility to changing market demands. Companies use heat sealing and ultrasonic sealing methods to make sure their packaging is top-notch and efficient.