DVS 2216-1-2006 Ultrasonic welding process description of plastic series parts, machines and equipment, influencing factors, construction, quality assurance
2007DVS 2216-1-2007 "Ultrasonic welding of plastic series parts - Process description, machines and devices, influencing variables, design and quality assurance"
1992DVS 2216-1-1992 Ultrasonic joining of moulded parts and semi-finished parts of thermoplastic polymers in mass production - Machines and equipment - Function description and requirements
1991DVS 2216-1-1991 Ultrasonic joining and processing of molded parts and semi-finished products made of thermoplastics for series production; machines and equipment; functional description and requirements