Plastic welding and metal-plastic joints: patented joining processes, development, assembly and laboratory testing from Bielefeld.
KVT Bielefeld GmbH
BielefeldNew on Amplifa
We join plastics
KVT Bielefeld GmbH was founded in 1981 and specialises in joining thermoplastic plastics and the production of metal-plastic joints. The company masters the entire range of welding processes, including Electromagnetic Resistance Welding (EWS) for hot embedding of inserts, Hot Element Welding (HES), the patented, particle-free and oxidation-free Hot Gas Welding (HGS), Infra-Red Light Welding (IRS), Rotary Friction Welding (RRS), Thermo-Forming (hot-air riveting) as well as ultrasonic, hot-gas, mirror and induction welding. All thermoplastic moulded parts are welded, in particular high-performance plastics such as polyamide, PBT, POM, PPO and PPS. The range of services includes consulting, development and design, laboratory and application testing in four specialised laboratories, the assembly of complex assemblies and special machines, as well as training, service and maintenance. Customers come from the automotive industry, medical technology, household goods, consumer electronics, office equipment, food processing and packaging technology. Since 2018, KVT Bielefeld has been part of the global Dukane Group. The company is based in Bielefeld (HRB 31632, Amtsgericht Bielefeld local court).
- Site
- Bielefeld
- Processes
- Electromagnetic Resistance Welding (EWS), Hot Element Welding (HES), Hot Gas Welding (HGS), Infra-Red Light Welding (IRS), Rotary Friction Welding (RRS), Thermo-Forming (TF) – hot-air riveting / hot riveting, Ultrasonic Welding (USS), Hot-gas welding
- Materials
- Thermoplastic plastics, Polyamide, PBT, POM, PPO, PPS, Metal (inserts, metallic components)
- Certificates
- Laboratory and application testing
- Founded
- 1981
- Industries
- Automotive industry, Medical technology, Household goods, Consumer electronics, Office equipment/Electronics, Food processing
- 01
Consulting
- 02
Development/Design
- 03
Laboratory and application tests
- 04
Plastic welding or embedding of inserts
- 05
Assembly
- 06
Commissioning, training, service and maintenance
Materials and processes
Thermoplastic plastics
Base material for all welding and joining processes offered.
Polyamide
Delivers excellent welding results with the patented hot gas welding process.
PBT
A high-performance plastic considered difficult to weld, yet welds excellently with HGS.
POM
Suitable for particle-free, high-strength welded joints via hot gas welding.
PPO
High-tech material that is welded residue-free using the HGS process.
PPS
High-performance plastic for particle-free and oxidation-free welded joints.
Metal (inserts, metallic components)
Is hot-embedded into plastic parts via EWS, also as inserts with O-ring.
Locations
Bielefeld
DEHeadquarters with development, laboratories, production and assembly
- Materials
- Thermoplastic plastics (PA, PBT, POM, PPO, PPS), metal inserts
- Four specialised laboratories
- Systems for EWS, HES, HGS, IRS, RRS, TF, USS
Components and joints
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Electromagnetic Resistance Welding (EWS)Joining | – | – | – | – | Thermoplastic plastics, Metal-plastic joints (inserts with O-ring) |
| Hot Element Welding (HES)Joining | – | – | – | – | Thermoplastic plastics |
| Hot Gas Welding (HGS)Joining | – | – | – | – | Thermoplastic plastics, Polyamide, PBT, POM, PPO, PPS, High-performance plastics |
| Infra-Red Light Welding (IRS)Joining | – | – | – | – | Thermoplastic plastics |
| Rotary Friction Welding (RRS)Joining | – | – | – | – | Thermoplastic plastics (rotationally symmetric |
| Thermo-Forming (TF) – hot-air riveting / hot rivetingJoining | – | – | – | – | Thermoplastic plastics |
| Ultrasonic Welding (USS)Joining | – | – | – | – | Thermoplastic plastics |
| Hot-gas weldingJoining | – | – | – | – | Thermoplastic plastics |
| Mirror weldingJoining | – | – | – | – | Thermoplastic plastics |
| Induction weldingJoining | – | – | – | – | Thermoplastic plastics |
| AssemblyAssembly | – | – | – | – | – |
| DevelopmentEngineering | – | – | – | – | – |
| ConsultingEngineering | – | – | – | – | – |
| Laboratory and application testsTesting | – | – | – | – | – |
Additional services
Quality
In four highly specialised laboratories, experienced process specialists carry out laboratory and application tests. The patented hot gas welding process achieves thin, high-strength weld seams with high burst pressure values.
| Evidence | Bielefeld |
|---|---|
| Laboratory and application testing |
History
- 1981
Foundation of KVT Bielefeld
- 2018
KVT Bielefeld becomes part of the global Dukane Group