Design and manufacture of injection moulds and die-casting moulds for thermoplastics, thermosets, aluminium and zinc.
Kessler Werkzeugbau AG
CH-8219 Trasadingen (Wassergass 12)New on Amplifa
Mould making from a single source
Kessler Werkzeugbau AG in Trasadingen is a Swiss mould manufacturer that designs, manufactures and maintains injection moulds and die-casting moulds. The company was created from the merger of Grewatec AG with Kessler Werkzeugbau AG as of 1 September 2016; Grewatec AG was founded in 1994 by Walter Greulich as a management buy-out from Georg Fischer Formenbau. The core competence is tool and mould making: high-performance injection moulds with 1 to 48 cavities, multi-component tools, slider, curved, jaw and unscrewing moulds as well as MIM moulds (Metal Injection Moulding) for thermoplastics and thermosets, plus die-casting moulds for aluminium and zinc parts with mould sizes up to 800 x 800 mm and mould weights up to 3.5 t. Tool design is carried out in-house with Solidworks including filling simulation (Moldflow); manufacturing comprises hard/soft milling, turning with driven tools, grinding, sink and wire EDM including start-hole drilling, polishing and laser welding for prototypes and repairs. In addition to moulds, the company manufactures single parts and small series as contract manufacturing and provides tool maintenance, sampling, measurements and O-series production. Customers come from medical technology, cosmetics, food/packaging, electrical engineering, valves and piping technology, and the automotive industry.
- Site
- CH-8219 Trasadingen
- Processes
- Hard / soft milling, Hard / soft turning (with driven tools), Drilling, Cylindrical/surface grinding, Sink EDM incl. microgenerator, Wire EDM, Start-hole drilling Ø 0.3 - 3.0 / Ø 0.15 - 0.3 mm, Polishing
- Materials
- Thermoplastics, Thermosets, Aluminium, Zinc, Metal Injection Moulding, Tool steel
- Certificates
- 3D coordinate measurement, Spotting press 50 t, Ultrasonic cleaning, ISO 9001
- Founded
- 1994
- Industries
- Medical technology / Cosmetics, Food / Packaging, Electrical engineering, Valves and piping technology, Automotive industry, General technical components
- 01
Engineering and tool design (Solidworks, filling simulation)
- 02
Machining (milling, turning, grinding, EDM)
- 03
Polishing and ultrasonic cleaning
- 04
Mould making and assembly
- 05
Inspection (3D coordinate measurement, surface plate marking)
- 06
Sampling, O-series, series production
- 07
Tool maintenance and repair (laser welding)
Materials and processes
Thermoplastics
Material for high-performance injection moulds with 1 to 48 cavities.
Thermosets
Injection moulds for thermosetting materials including mould making for thermoplastics and thermosets.
Aluminium
Die-casting moulds for aluminium parts with mould sizes up to 800 x 800 mm.
Zinc
Die-casting moulds for zinc parts including punching and deburring tools.
Metal Injection Moulding
Moulds for powder-metallurgical MIM processing.
Tool steel
Hard/soft machining from milling to EDM for mould making.
Location
Trasadingen
CHHead office and production (mould making, machining, engineering)
- Part weight / size
- Mould weight up to 3.5 t
- Lot size
- Single parts to small series (contract manufacturing), moulds as one-off
- Materials
- Thermoplastics, thermosets, aluminium, zinc, tool steel
- CAD Solidworks
- CAM Edge CAM
- Hard/soft milling
- Hard/soft turning with driven tools
- Cylindrical/surface grinding
- Sink EDM incl. microgenerator
- Wire EDM
- Start-hole drilling Ø 0.3–3.0 / Ø 0.15–0.3 mm
- Polishing
- Ultrasonic cleaning
- Spotting press 50 t
- Laser welding
- 3D coordinate measuring machine
Moulds and components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Hard / soft millingMachining | – | – | – | – | – |
| Hard / soft turning (with driven tools)Machining | – | – | – | – | – |
| DrillingMachining | – | – | – | – | – |
| Cylindrical/surface grindingMachining | – | – | – | – | – |
| Sink EDM incl. microgeneratorMachining | – | – | – | – | – |
| Wire EDMMachining | – | – | – | – | – |
| Start-hole drilling Ø 0.3 - 3.0 / Ø 0.15 - 0.3 mmMachining | – | – | – | – | – |
| PolishingSurface | – | – | – | – | – |
| Ultrasonic cleaningSurface | – | – | – | – | – |
| Spotting press 50 tForming | – | – | – | – | – |
| Tool/mould making injection moulds (thermoplastics and thermosets, 1-48 cavities)Tool making | – | 800 mm × 800 mm | 3.5 t | – | Thermoplastics, Thermosets |
| Die-casting moulds for aluminium and zinc partsCasting | – | 800 mm × 800 mm | 3.5 t | – | Aluminium, Zinc |
| Punching/deburring toolsForming | – | – | – | – | – |
| Multi-shot tools (multi-component injection moulds)Tool making | – | – | – | – | – |
| MIM moulds (Metal Injection Moulding)Tool making | – | – | – | – | – |
| Filling simulation (Moldflow)Engineering | – | – | – | – | Plastics, Aluminium, Zinc |
| Laser welding (prototypes, repairs)Joining | millimetre-precise | – | – | – | – |
| Tool design (SolidWorks)Engineering | – | – | – | – | – |
| Tool maintenance / spare parts productionAssembly | – | – | – | – | – |
| Contract manufacturing (single parts and small series)Machining | – | – | – | Small series | – |
| 3D coordinate measurementInspection | – | – | – | – | – |
| Prototype productionEngineering | millimetre-precise | – | – | – | – |
| Unscrewing mouldsTool making | – | – | – | – | – |
| Curved mouldsTool making | – | – | – | – | – |
| Slider mouldsTool making | – | – | – | – | – |
| Jaw mouldsTool making | – | – | – | – | – |
| Standard moulds (1-32 cavities)Tool making | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Spotting press | – | 1 | – | – | Trasadingen |
| 3D coordinate measuring machine | – | 1 | – | – | Trasadingen |
Additional services
Quality
Mould acceptance is performed with a 3D coordinate measuring machine and a spotting press; manufacturing includes high-precision EDM, grinding and polishing for high surface requirements. Design documentation is updated after mould manufacture, and customer specifications and standards are individually incorporated into the design.
| Evidence | Trasadingen |
|---|---|
| 3D coordinate measurement | |
| Spotting press 50 t | |
| Ultrasonic cleaning | |
| ISO 9001 |
History
- 1994
Foundation of Grewatec AG by Walter Greulich as a management buy-out from Georg Fischer Formenbau; move into today's building with machines and staff; development from pure piping-system mould making to universal mould making.
- 2004
Markus Greulich joins the company.
- 2005
Establishment of in-house tool design and introduction of the 3D CAD software Solidworks.
- 2007
Markus Greulich takes over technical management.
- 2009
Handover of management from Walter Greulich to Markus Greulich; Walter Greulich continues to serve in an advisory capacity.
- 2016
Merger of Grewatec AG with Kessler Werkzeugbau AG as of 1 September 2016; Schaffhausen site closed, joint head office in Trasadingen.