Development, toolmaking and cleanroom production of plastic components and systems for diagnostics, medical technology and pharmaceuticals.
Wirthwein Medical GmbH & Co. KG
Mühltal/Nieder-Ramstadt · Ober-Ramstadt · Çerkezköy/Tekirdağ (under construction)New on Amplifa
System supplier for plastic systems in cleanroom quality
Wirthwein Medical GmbH & Co. KG is a system supplier for plastic-based components, packaging materials and systems with a focus on diagnostics, medical technology and pharmaceuticals. Founded in 1946, the family-owned company produces thermoplastic molded parts by precision injection molding (part weights from 0.07 g to 800 g, cavity counts from 1 to 96) as well as hollow bodies by extrusion blow molding (5 ml to 6 l) – predominantly in ISO Class 7 cleanrooms according to DIN EN ISO 14644-1. More than 300 thermoplastics such as polyolefins, COC/COP, PC, ABS, PA, PMMA, PET and TPE as well as biopolymers are processed. The value chain includes product and process development, design with simulation, rapid prototyping, in-house toolmaking up to 3 t and 96 cavities, cleanroom assembly (manual to robot-assisted), printing, fluorination, sterilization (EO, beta, gamma), packaging/labeling as well as logistics. Around 10 million plastic components are produced daily, over two billion molded parts annually on 100 injection molding and 15 extrusion blow molding machines. Three plants in Mühltal and Ober-Ramstadt (Hesse) plus a site in Çerkezköy/Turkey (under construction) form the production base; since 2005 the company has been part of the Wirthwein Group.
- Site
- Mühltal/Nieder-Ramstadt
- Processes
- Injection molding (thermoplastic injection molding), Single and multi-component injection molding, Extrusion blow molding, Toolmaking (prototype, pre-series and series tools, injection molds), Turning (toolmaking), Milling / HSC milling, Sinker EDM, Surface grinding, cylindrical grinding, jig grinding
- Materials
- Polyolefins (PP, PE, COC, COP), ABS, MABS, PC (polycarbonate), PS (polystyrene), PA (polyamide), PMMA, PET, TPE
- Certificates
- DIN EN ISO 13485:2021, DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, DIN EN ISO 15378:2018, DIN ISO 10001:2019, ISO 50001:2018, ISO 9001, ISO 13485, ISO 14001, ISO 15378 (GMP), ISO 50001, Cleanroom ISO Class 7 (DIN EN ISO 14644-1)
- Founded
- 1946
- Employees
- more than 330
- Industries
- Diagnostics, Medical technology, Pharmaceuticals, Packaging materials, Hair cosmetics (historical), Consumer electronics (historical)
- 01
Product and process development
- 02
Design and simulation (fill studies, warpage calculations)
- 03
Rapid prototyping / pilot tools
- 04
Toolmaking and in-house tool maintenance
- 05
Injection molding / extrusion blow molding in ISO Class 7 cleanroom
- 06
Assembly (manual to fully automated) with joining and printing techniques
- 07
Finishing, fluorination, sterilization
- 08
Packaging and labeling (UDI, barcode)
- 09
100 % camera and leak testing
- 10
Logistics and just-in-time delivery
Materials and processes
Polyolefins (PP, PE)
Standard and packaging applications in diagnostics, pharmaceuticals and packaging.
Cycloolefins (COC, COP, WIM Ject®)
For the prefilled syringe system WIM Ject® and glass-replacement applications.
ABS, MABS
For housings and technical molded parts with surface requirements.
Polycarbonate (PC)
For high-load, transparent functional parts in medical technology.
Polystyrene (PS)
For disposables and laboratory articles in diagnostics.
Polyamide (PA)
For mechanically stressed functional elements.
PMMA
For transparent components, e.g. as a glass substitute.
PET
For packaging materials and container applications.
TPE
For multi-component solutions with elastic functional zones.
Blend systems
Application-specific material blends for specific product properties.
Biopolymers / biodegradable polymers
Ecological alternative for customer-specific products.
Tool steels
Material for injection molds up to 96 cavities and 3 t in in-house toolmaking.
Locations
Mühltal I Plant (Headquarters)
DEInjection molding and assembly ISO Class 7, toolmaking, design & development, project management
- Part weight / size
- Injection molding 0.07–800 g; tools up to 3 t
- Lot size
- Prototype to high-volume series
- Materials
- more than 300 thermoplastics
- 100 injection molding machines (250–4,000 kN, distributed across sites)
- Milling, turning and EDM machines
- HSC milling
- Surface, cylindrical and jig grinding
- CAD/CAM network
Mühltal II Plant
DEInjection molding and assembly ISO Class 7, in-house tool maintenance, sales, purchasing & logistics, logistics center
- Part weight / size
- Injection molding 0.07–800 g
- Lot size
- Prototype to high-volume series
- Materials
- more than 300 thermoplastics
- Injection molding machines ISO Class 7
- Assembly systems
Ober-Ramstadt Plant
DEExtrusion blow molding and assembly, logistics center
- Part weight / size
- Blow molding 5 ml–6 l
- Lot size
- Medium to high-volume series
- Materials
- Thermoplastics
- 15 extrusion blow molding machines (distributed across sites)
- Laminar flow equipment
- Assembly systems
Wirthwein Medikal A.Ş., Çerkezköy/Tekirdağ
TRProduction site under construction (completion planned for autumn 2026)
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Injection molding (thermoplastic injection molding)Plastics | – | – | 0.07 g – 800 g | – | more than 300 thermoplastics, Polyolefins (PP, PE, COC, COP), ABS, MABS, PC, PS, PA, PMMA, PET, TPE, Blend systems, Biopolymers |
| Single and multi-component injection moldingPlastics | – | – | – | – | thermoplastics |
| Extrusion blow moldingPlastics | – | – | – | Volume 5 ml to 6 l | thermoplastics |
| Toolmaking (prototype, pre-series and series tools, injection molds)Toolmaking | Precision to the hundredth of a millimeter | 1,000 mm × 600 mm | 3 t | Multi-cavity tools up to 96 cavities | Steels |
| Turning (toolmaking)Machining | – | – | – | – | Steels |
| Milling / HSC millingMachining | – | – | – | – | Steels |
| Sinker EDMMachining | – | – | – | – | Steels |
| Surface grinding, cylindrical grinding, jig grindingMachining | – | – | – | – | Steels |
| Product development and design engineeringEngineering | – | – | – | – | – |
| Cleanroom assembly (manual, semi-automated, fully automated assembly)Assembly | – | – | – | – | – |
| Laser weldingJoining | – | – | – | – | thermoplastics |
| Ultrasonic weldingJoining | – | – | – | – | thermoplastics |
| Hot element weldingJoining | – | – | – | – | thermoplastics |
| Pad printingSurface treatment | – | – | – | – | Plastics |
| Ink-jet printingSurface treatment | – | – | – | – | Plastics |
| Laser printingSurface treatment | – | – | – | – | Plastics |
| Gas-phase fluorination (fluorination of plastic surfaces)Surface treatment | – | – | – | – | Thermoplastics |
| Sterilization (EO, beta, gamma)Surface treatment | – | – | – | – | sterilization-compatible plastics |
| Packaging and labeling (incl. Cleanpack, protective gas atmosphere, UDI/barcode/data matrix)Assembly | – | – | – | – | – |
| Quality inspection (100 % camera and leak testing, tactile/optical measurement,Testing | – | – | – | – | – |
| Cleanroom production ISO Class 7 (DIN EN ISO 14644-1)Plastics | – | – | – | – | thermoplastics |
| Logistics services (storage, transport, just-in-time)Assembly | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Injection molding machines | – | 100 | Clamping forces 250 kN to 4,000 kN | – | Mühltal, Ober-Ramstadt |
| Extrusion blow molding machines | – | 15 | Container volume 5 ml to 6 l | – | Ober-Ramstadt, Mühltal |
| Milling, turning and EDM machines | – | – | Dimensions 1,000 x 600 mm, weights up to 3 t | – | Mühltal |
| robot-assisted cleanroom assembly machines | – | 25 | – | – | Mühltal, Ober-Ramstadt |
| Assembly systems | – | 35 | – | – | – |
Additional services
Reference customers
Quality and certifications
Quality assurance is based on an integrated, certified management system (among others DIN EN ISO 13485, 9001, 15378, 14001, 50001) with ISO Class 7 cleanroom production according to DIN EN ISO 14644-1 and GMP requirements. Testing equipment includes 100 % inline camera and leak tests, tactile and optical measurement, 3D coordinate metrology, measuring microscopy, tensile and torque testing as well as CT measurement.
| Evidence | Mühltal | Ober-Ramstadt |
|---|---|---|
| ISO 9001 | ||
| ISO 13485 | ||
| ISO 14001 | ||
| ISO 15378 (GMP) | ||
| ISO 50001 | ||
| Cleanroom ISO Class 7 (DIN EN ISO 14644-1) |
Company history
- 1946
Founded by Fritz Albert Riegler on 1 April 1946 with the manufacture of press tools for the furniture industry
- 1949
First injection molded parts (curlers for Goldwell), expansion of mold and toolmaking to thermoplastics
- 1954
Purchase of a plot of land in Mühltal/Nieder-Ramstadt, first hall for toolmaking
- 1962
Acquisition of an operating facility in Grasellenbach-Hammelbach, start of extrusion blow molding production
- 1968
Generational change: after the founder's death, Horst Riegler takes over management; production of technical plastic parts for consumer electronics
- ab 1968
Long-standing collaboration with Philips Eindhoven in the field of consumer electronics
- 1970
Focus on packaging for the food industry
- 1975
Focus on the detergents and personal care industry (handle containers)
- 1987
Exit from CFC production following the Montreal Protocol, production of spray systems with breathing air
- 1992
Breakthrough in medical technology: series production of contact lens trays and hygiene kits (ATP verification)
- 1994
New construction of the Ober-Ramstadt plant (10,000 m²), closure of the Grasellenbach-Hammelbach site
- 2005
Acquisition of Riegler GmbH & Co. KG by the Wirthwein Group
- 2020
Renaming to Wirthwein Medical GmbH & Co. KG as of 1 July 2020
- 2026
New production site Wirthwein Medikal A.Ş. in Çerkezköy/Turkey under construction, completion planned for autumn 2026