High-performance injection molds for medical, pharmaceutical, diagnostic and specialty applications – since 1955.

FOSTAG Formenbau AG

Stein am Rhein (Kaltenbacherstrasse 28, CH-8260) · SwitzerlandNew on Amplifa

1955Founded

4'000 m²Production area (since 1999)

100Patent applications (2024)

50+Countries with delivered molds

About FOSTAG

FOSTAG Formenbau AG, based in Stein am Rhein, Switzerland, develops and manufactures high-performance injection molds for complex and demanding applications. Founded in 1955 as Gebrüder Segmüller, the company supplies customers in over 50 countries with its multi-cavity molds, primarily in the fields of medical, pharmaceutical and diagnostic applications as well as specialty applications such as thin-wall packaging. In addition to planning, design and production of molds, FOSTAG offers its own hot runner systems for challenging materials such as PVC and COC/COP, the InMedio core-centering system, the Angusta needle shut-off system, and co-injection and core-back technologies. The in-house technical center provides injection molding machines up to 6000 kN for mold trials and customer training. All mold plates and mold inserts are manufactured fully interchangeable, with a focus on short cycle times, long tool life and maintenance-friendly operation. FOSTAG manufactures on a production area of 4'000 m² with its own quality assurance; service is available around the clock.

Site: Stein am Rhein
Processes: Injection Mold Making (High-Performance Injection Molds, Multi-Cavity Molds), Planning, consulting and design of injection molds, Production of high-performance injection molds, Acceptance, training, service (24/7), In-house hot runner systems (including for PVC, COC/COP), InMedio core-centering systems, Angusta needle shut-off system, Co-injection hot runner
Materials: In-house Hot Runner Systems (including PVC, COC/COP, Co-Injection), InMedio Core-Centering System (I, II, III), Needle Shut-Off System, Co-Injection Hot Runner, Core Back System, 2K / Multi-Component Processing
Founded: 1955
Industries: Medical, Pharmaceutical, Diagnostics, Packaging (Thin-Wall), Specialty Applications, Specialty Applications (including Thin-Wall Packaging)

01
Planning, Consulting, Design
02
Mold Making / Production
03
Acceptance, Training, Service (24/7)
04
Quality Assurance (FOSTAG Quality Concept)

Materials & Processes

Hot Runner

In-house Hot Runner Systems (including PVC, COC/COP, Co-Injection)

Compact systems with excellent temperature control for challenging materials such as PVC and COC/COP.

InMedio

InMedio Core-Centering System (I, II, III)

Patented system for eliminating core shift and deflection, with interchangeable cavities in the machine.

Angusta

Needle Shut-Off System

Full hot runner solution for the tightest cavity spacing and gate-free series production.

Co-Inj

Co-Injection Hot Runner

Enables multi-layer and barrier layers such as PP/EVOH/PP for barrier capsules.

Core Back

Core Back System

Economical design of tools for multi-component processing.

2K / Multi-Component Processing

Simultaneous processing of multiple plastics as well as overmolding of insert parts.

Locations

Stein am Rhein

Headquarters, Production, Technical Center

Materials: PP, HDPE, LDPE, PVC, COC, COP, PMMA, ABS, POM, TPE, TPU, PS, PET, PP/PC, PE, PP/EVOH/PP, PLA

Injection molding machines up to 6000 kN (technical center)
Modern measuring machines for quality inspection

Molds & Solutions

**Disposable Syringe**Injection Mold · Medical

**Pen Injector**Injection Mold · Pharmaceutical

**Pipette Tip**Injection Mold · Diagnostics

**Barrier Capsule**Co-Injection · Specialty Applications

**Blood Filter**Injection Mold · Medical

**Drip Chamber**PVC Hot Runner · Medical

**Screw-Pierce Cap (CR Closure)**Injection Mold · Pharmaceutical

**Single-Dose Strip**Injection Mold · Pharmaceutical

**Inhaler**Injection Mold · Pharmaceutical

Inside the production

Industries

MedicalPharmaceuticalDiagnosticsPackaging (Thin-Wall)Specialty ApplicationsSpecialty Applications (including Thin-Wall Packaging)

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Injection Mold Making (High-Performance Injection Molds, Multi-Cavity Molds)Plastics	–	–	–	–	PP, HDPE, LDPE, PVC, COC, COP, PMMA, ABS, POM, TPE, TPU, PS, PET, PP/PC, PE, PP/EVOH/PP, PLA

2 Anlagen & Maschinen

Machine	Manufacturer / model	Quantity	Working area	Year built	Site
Injection Molding Machine (Technical Center for Mold Trials and Customer Training)	–	–	Clamping force range up to 6000 kN	–	Stein am Rhein
Measuring Machines (Quality Inspection, State-of-the-Art Measuring Methods)	–	–	–	–	Stein am Rhein

Additional services

Planning, consulting and design of injection moldsProduction of high-performance injection moldsAcceptance, training, service (24/7)In-house hot runner systems (including for PVC, COC/COP)InMedio core-centering systemsAngusta needle shut-off systemCo-injection hot runnerCore Back system2K / multi-component processingFOSTAG Quality ConceptTechnical center with injection molding machines up to 6000 kNQuality inspection with state-of-the-art measuring machines

History

1955
Bruno and Hans Segmüller found the injection mold making company Gebrüder Segmüller in Wagenhausen.
1961
Move into a newly built factory in Stein am Rhein; own high-performance hot runner injection molds.
1969
First technologies developed and patented.
1977
Renaming of Segmüller AG to FOSTAG Formenbau AG.
1998
Management buy-in by the brothers Markus and Rolf Mühlemann.
1999
Production area doubled to 4'000 m², machine fleet expanded.
2012
Reorientation toward product and technology innovations (including InMedio, co-injection hot runner).
2019
Development of InMedio II – 88th patent application.
2024
100th patent application.