
Manufacturer of wire-processing machines for innerspring units as well as build-to-order mechanical engineering for third parties
Spühl GmbH
CH-9300 Wittenbach (Switzerland)New on Amplifa
Mechanical engineering for innerspring units since 1877
Spühl GmbH is a Swiss mechanical engineering company founded in 1877, headquartered in Wittenbach (St. Gallen), which develops and manufactures wire-processing machines for the automatic and semi-automatic production of innerspring units and hybrid products for the mattress and upholstered furniture industry. Under the Fides brand, the portfolio includes pocket spring machines (FPC-120, FPA-300), Bonnell transfer machines (FT-81) as well as special machines such as frame bending machines, storage systems, rollpack machines and rollpack openers. The machines are manufactured entirely in Switzerland and sold in more than 150 countries. In addition to machine building, the company offers build-to-order contract manufacturing: parts, assemblies or complete machines for third parties, from development to customer service. Its range of services includes service, spare parts, training, Smart Services (Monitoring & Analytics, Connect, Schedule) and service agreements. Spühl invests up to 10% of revenue in research and development and is a subsidiary of the American Leggett & Platt, Inc.
- Site
- CH-9300 Wittenbach
- Processes
- Manufacture pocket springs (wire bending/winding of barrel and cylindrical springs with, Assemble/glue pocket spring units (top/bottom and/or center, zoned innerspring units,, Manufacture Bonnell innerspring units (spring winding, knotting, heat treatment, assembly into, Heat treatment of springs (de-burring between two electrodes, approx. 300 °C), Heat treatment/tempering of spring wire (relaxation before winding), Frame bending of round or flat material with automatic clip pressing, Rollpack/compress and roll-packing of innerspring units (Bonnell, open end, pocket spring units), Unpacking of rolled innerspring units (automatic rollpack opener) with hot-melt applicator for
- Materials
- Spring wire, Spring wire (Bonnell), Spiral wire (Helical), Pocket fabric (cotton, non-woven), Packing paper, Frame material (round or flat bar, tensile strength up to 1'800 N/mm2), Clip material (tensile strength 1500 - 1600 N/mm2), Pocket fabric
- Certificates
- ISO 9001:2015, ISO 14001:2015, ISO 45001:2018
- Founded
- 1877
- Industries
- Mattress industry, Upholstered furniture industry, Innerspring unit manufacturers
- 01
Wire feeding from the spool
- 02
Heat treatment/tempering of the wire
- 03
Winding/shaping of the springs
- 04
Knotting/welding
- 05
Innerspring unit assembly (gluing/joining)
- 06
Rollpacking and packaging
- 07
Service, spare parts and Smart Services
Materials and processing areas
Spring wire
For pocket springs 1,3–2,2 mm, for Bonnell springs 1,9–2,4 mm wire gauge.
Spiral wire (Helical)
1,3–1,4 mm for joining the spring rows into innerspring units.
Pocket fabric
Cotton or non-woven, ultrasonically welded around the springs.
Frame material (steel)
Round bar 3–5 mm or flat bar 10 x 1,3 mm, tensile strength up to 1'800 N/mm².
Clip material (steel)
1–1,5 mm thick x 30 mm, tensile strength 1500–1600 N/mm².
Packing paper
Packing material for compressing and roll-packing innerspring units.
Heat treatment
De-burring of springs between two electrodes at approx. 300 °C or tempering of the wire before winding.
Location

Wittenbach
CHHeadquarters, production, sales, service
- Materials
- Spring wire, spiral wire, pocket fabric, steel, packing paper
- Pocket spring machine FPC-120
- Assembly machine FPA-300
- Bonnell transfer machine FT-81
- Frame bending machine FM-2000
- Storage system PSL
- Rollpack machine RPA2
- Rollpack opener ROA-400RS
Machines and systems







Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture pocket springs (wire bending/winding of barrel and cylindrical springs withForming | – | Spring height set 100 - 270 mm; × Spring outer diameter Ø (Dta) 40 - 75 | – | – | Spring wire 1.3 - 2.2 mm, Pocket fabric (cotton, non-woven) |
| Assemble/glue pocket spring units (top/bottom and/or center, zoned innerspring units,Joining | – | Spring height 70 - 230 mm × Working width max. 2'100 mm | – | – | Pocket springs (spring outer diameter Ø 40 - 80 mm) |
| Manufacture Bonnell innerspring units (spring winding, knotting, heat treatment, assembly intoForming | – | Spring height 55 - 190 mm × Working width 2'000 mm; spring end ring | – | – | Spring wire 1.9 - 2.4 mm, Spiral wire 1.3 - 1.4 mm |
| Heat treatment of springs (de-burring between two electrodes, approx. 300 °C)Heat treatment | – | – | – | – | Spring wire |
| Heat treatment/tempering of spring wire (relaxation before winding)Heat treatment | – | – | – | – | Spring wire |
| Frame bending of round or flat material with automatic clip pressingForming | – | – | – | – | Round bar 3 - 5 mm, Flat bar 10 x 1.3 mm, Tensile strength up to 1'800 N/mm2 |
| Rollpack/compress and roll-packing of innerspring units (Bonnell, open end, pocket spring units)Forming | – | Pocket spring unit height 220 mm, × Innerspring unit width 2000 mm | – | – | Paper (packing material), Bonnell, open end and pocket spring units |
| Unpacking of rolled innerspring units (automatic rollpack opener) with hot-melt applicator forJoining | – | Max. rollpack diameter 650 mm × Max. rollpack width 2100 mm | Max. rollpack weight 300 kg | – | Pocket, Bonnell and LFK innerspring units |
| Automatic intermediate storage of pocket spring strings in containersAssembly | – | Spring height up to 225 mm × Storage dimensions 2000 x 2000 mm | – | – | Pocket spring strings, pocket material any (cotton, |
| Build-to-order mechanical engineering/contract work: parts, assemblies or complete machines forEngineering | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Pocket spring machine | Fides (Spühl) FPC-120 | – | Spring outer diameter Ø (Dta) 40 - 75 mm; spring height 70 - 270 mm; fabric roll up to 1200 mm | – | Wittenbach, Switzerland |
| Pocket spring assembly machine | Fides (Spühl) FPA-300 | – | Spring outer diameter Ø 40 - 80 mm; working width max. 2'100 mm; spring height 70 - 230 mm | – | Wittenbach, Switzerland |
| Bonnell transfer machine | Fides (Spühl) FT-81 | – | Spring end ring Ø (Dfi) 61 - 88 mm; working width 2'000 mm; spring height 55 - 190 mm | – | Wittenbach, Switzerland |
| Frame bending machine | Fides (Spühl) FM-2000 | – | Round bar 3 - 5 mm or flat bar 10 x 1.3 mm | – | Wittenbach, Switzerland |
| Storage system for pocket spring strings | Fides (Spühl) PSL | – | Storage dimensions 2000 x 2000 mm; spring height up to 225 mm | – | Wittenbach, Switzerland |
| Rollpack machine | Fides (Spühl) RPA2 | – | Max. roll diameter 650 mm; max. roll width 2000 mm | – | Wittenbach, Switzerland |
| Automatic rollpack opener | Fides (Spühl) ROA-400RS | – | Max. rollpack width 2100 mm; max. rollpack diameter 650 mm | – | Wittenbach, Switzerland |
Additional services
Quality and certification
The quality management system is certified to ISO 9001:2015, the environmental management system to ISO 14001:2015 and the occupational safety system to ISO 45001:2018 by NSF-ISR. Scope of the certificates: design, development, production, marketing and sales of wire-processing machines.
| Evidence | Wittenbach |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 | |
| ISO 45001:2018 |
History
- 1877
Heinrich Spühl founds the Spühl inventor's workshop in St. Gallen; his machine for manufacturing upholstery innerspring units is licensed for sale from 1883 to 1886.
- 1886
First spring knotting machine with patent application by Heinrich Spühl.
- 1889
Successes at the World Exhibition Exposition Universelle Internationale in Paris (bronze and silver medals).
- 1900
Another exhibition in Paris, medal wins.
- 1930
Development of the world's first mechanical upholstery spring winder machine.
- 1934/1935
Patent by Emil and Julius Spühl for a machine for producing pocket springs.