Development and manufacture of precision friction welding machines for plastic, composite, wood and metal components.
Fischer Kunststoff-Schweißtechnik GmbH
Frankenhain (Berkatal)New on Amplifa
About Fischer Kunststoff-Schweißtechnik
Fischer Kunststoff-Schweißtechnik GmbH has been developing and manufacturing friction welding machines for industrial applications since 1995 at its Frankenhain (Berkatal) site in northern Hesse. The process portfolio includes circular welding (ZS), linear welding (VIB), spin welding (ROT), orbital vibration welding (ROV), IR friction welding with infrared preheating, infrared riveting as well as metal welding (CIRPULS) and adhesive-free wood welding. Thermoplastics, fibre-reinforced plastics such as GFRP and CFRP, metals and natural wood are joined without additional materials. In addition to single-station and multi-station machines, the company offers robotic welding modules, a flexible joining centre for small series up to lot size 1, as well as design of clamping fixtures, tests, pre-series, machine rental and used machines. Typical industries include the automotive supply industry, the plastics processing industry, electronic housings, lightweight construction in rail vehicle and aircraft manufacturing as well as timber construction and medical technology. Development and manufacturing take place entirely in Germany.
- Site
- Frankenhain (Berkatal)
- Processes
- Circular welding (ZS) / circular friction welding, Spin welding (ROT), Linear welding (VIB) / vibration welding, Orbital vibration welding (ROV/ROV-S), IR friction welding (friction joining with infrared preheating), IR riveting (infrared riveting), Metal welding / circular friction melting (CIRPULS), Wood welding (friction welding of wood, adhesive-free)
- Materials
- Thermoplastics (engineering plastics), GFRP (glass-fibre-reinforced plastic), CFRP (carbon-fibre-reinforced plastic), High-performance materials / fibre-reinforced plastics, Wood (spruce, oak, natural wood), Metals / metal alloys, Plastic-metal joint (hybrid), Circular welding
- Certificates
- Process monitoring (temperature, force, distance), Setpoint-actual parameter management
- Founded
- 1995
- Industries
- Automotive supply industry, Plastics processing, Electronic housings/keyless entry fobs, Lightweight construction (truck bodies, rail vehicles, aircraft manufacturing), Timber construction/parquet flooring, Medical technology/cleanroom
- 01
Application assessment and process selection
- 02
Tests and pre-series
- 03
Design of machines and clamping fixtures
- 04
Machine manufacturing
- 05
Commissioning and transition to series production
Materials and Processes
Circular welding
Patented circular friction welding for rectangular geometries with uniform weld strength in longitudinal and transverse ribs.
Linear welding (vibration welding)
Linear friction welding for thermoplastics with any X-Y seam path.
Spin welding
For rotationally symmetric parts up to diameter 300 mm with precise digital angular positioning.
Orbital vibration welding
Arc segment welding for parts with branches that must not be rotated, with higher strength and less weld flash.
IR friction welding
Non-contact infrared preheating followed by friction joining, suitable for fibre-reinforced plastics up to 50 % fibre content and cleanroom applications.
Infrared riveting
Compact thermal riveting units with focused IR radiation without warm-up time.
Metal welding (circular friction melting)
Pulsed circular welding of metal cross-sections up to 500 mm² with welding times under one second.
Wood welding
Adhesive- and additive-free friction welding of wood with joint areas up to 500 cm² and welding times under 30 seconds per layer.
Locations
Frankenhain (Berkatal)
DEDevelopment and manufacturing (headquarters)
- Lot size
- Lot size 1 to large series
- Materials
- Thermoplastics, GFRP, CFRP, wood, metals
- Circular welding machine ZMT 05
- Hybrid welding machine ZMT 2-IR
- Pipe welding machine RML 2.1 CC
- Spin welding machine RMT 2.1 CC
- Circular welding centre ZMT 2.2
- Welding module ZMR 1
- Handheld welding module PMO
- Wood friction welding machine up to 60 kN
- FlexFueg joining centre
- Laboratory machines for metal welding up to 200 mm²
Components and Applications
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Circular welding (ZS) / circular friction weldingJoining | – | – | – | – | thermoplastics, fibre-reinforced plastics (GFRP, CFRP), metals |
| Spin welding (ROT)Joining | – | up to diameter 300mm | – | – | plastics, metals |
| Linear welding (VIB) / vibration weldingJoining | – | – | – | – | thermoplastics |
| Orbital vibration welding (ROV/ROV-S)Joining | – | – | – | – | thermoplastics, fibre-reinforced plastics |
| IR friction welding (friction joining with infrared preheating)Joining | – | – | – | – | fibre-reinforced plastics (up to 50 % fibre content), thermoplastics |
| IR riveting (infrared riveting)Joining | – | – | – | – | plastics |
| Metal welding / circular friction melting (CIRPULS)Joining | – | – | – | – | metals, metal alloys |
| Wood welding (friction welding of wood, adhesive-free)Joining | – | up to 500 cm² joint area | – | – | wood (spruce, oak, natural wood) |
| Thermal joining processesJoining | – | – | – | – | plastics |
| Friction welding with robotic welding module (lightweight/robust, circular, linear, orbital)Joining | – | – | – | – | engineering plastics with and without reinforcing fibre |
| Joining in the joining centre (multi-process joining centre, lot size 1 to large series)Joining | – | – | – | – | engineering plastics |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Circular welding machine | Fischer Kunststoff-Schweißtechnik ZMT 05 | – | for smallest parts | – | – |
| Hybrid welding machine | Fischer Kunststoff-Schweißtechnik ZMT 2-IR | – | – | – | – |
| Pipe welding machine | Fischer Kunststoff-Schweißtechnik RML 2.1 CC | – | – | – | – |
| Spin welding machine | Fischer Kunststoff-Schweißtechnik RMT 2.1 CC | – | – | – | – |
| Circular welding centre (multi-station machine) | Fischer Kunststoff-Schweißtechnik ZMT 2.2 / ZMT 2 | – | – | – | – |
| Welding module ZMR 1 (circular vibration, built-in/robot modules) | Fischer Kunststoff-Schweißtechnik ZMR 1 | – | Stroke 50 mm, feed cylinder Ø 50-63 | – | – |
| Portable handheld/robot welding module | Fischer Kunststoff-Schweißtechnik PMO | – | – | – | – |
| Wood friction welding machine (up to 60 kN, areas >500 cm²) | Fischer Kunststoff-Schweißtechnik | – | Joint areas up to 500 cm² | – | – |
| Joining centre (universal joining centre for plastic parts) | Fischer Kunststoff-Schweißtechnik FlexFueg | – | – | – | – |
| Laboratory machines for metal welding (cross-sections up to 200 mm²) | Fischer Kunststoff-Schweißtechnik | – | Cross-sections up to 200 mm² | – | – |
Additional services
Reference customers
Quality
The welding processes are monitored and controlled by freely programmable matrix controls based on Siemens S7, including force, temperature and distance measurement as well as setpoint-actual parameter management. Welded components meet requirements for pressure, tensile strength and thermal resistance.
| Evidence | Frankenhain (Berkatal) |
|---|---|
| Process monitoring (temperature, force, distance) | |
| Setpoint-actual parameter management |
History
- 1995
Foundation of Fischer Kunststoff-Schweißtechnik GmbH; friction welding technology since 1995
- 2006
Development of a friction welding machine designed specifically for wood (up to 500 cm² joint area) with EPF Lausanne (IBOIS)
- 2015
Funding project FlexFueg (HA project no. 460/15-02, Hessen ModellProjekte/LOEWE): development of a flexible plastics joining centre with UNI Kassel
- 2025
Feature report 'Präzision in Bewegung' in Wirtschaft Nordhessen 12/2025