... and stable output power 2.Used on three-side sealing bag machine 3.Rational Construction 4. Attractive design Ultrasonic Welding ... Machine Used on PE/PP/OPP Bag Machine 1. Usage: PE, PP, PVC, OPP material such as plastic bag machine,can be equipped ... sealing machine, ziplock bag machine, etc.2. Features:(1) Using ultrasonic welding, spot welding, etc. Bags that were welded by this machine ...