DVS 2216-2-1992 "Ultrasonic Joining of Moulded Parts and Semi-Finished Parts of Thermoplastic Polymers in Mass Production - Ultrasonic Welding, Methods and Features"
2007DVS 2216-1-2007 "Ultrasonic welding of plastic series parts - Process description, machines and devices, influencing variables, design and quality assurance"
1992DVS 2216-2-1992 "Ultrasonic Joining of Moulded Parts and Semi-Finished Parts of Thermoplastic Polymers in Mass Production - Ultrasonic Welding, Methods and Features"
DVS 2216-2-1992 "Ultrasonic Joining of Moulded Parts and Semi-Finished Parts of Thermoplastic Polymers in Mass Production - Ultrasonic Welding, Methods and Features" was changed to DVS 2216-1-2007 "Ultrasonic welding of plastic series parts - Process description, machines and devices, influencing variables, design and quality assurance".