Surface finishing of plastic and metal parts through painting, PVD coating and printing processes as well as in-house mechanical manufacturing.
m+m colordesign AG
GrenchenNew on Amplifa
About us
m+m colordesign AG was founded in 1998 in Grenchen and specializes in the surface finishing of plastic and metal parts. The service portfolio includes painting (by hand as well as on a flatbed machine and spindle machine), PVD vacuum coating, pad printing in four colors up to 80x80 mm including all-over printing of cylindrical parts, and screen printing up to 300x150 mm. Colors are mixed in an in-house mixing system according to RAL, NCS and Pantone, optionally combined with protective coatings. Since 2025, an in-house mechanical department has manufactured components and complete assemblies via CNC machining, so that production and finishing come from a single source. The company is certified according to ISO 9001:2015 and ISO 14001:2015 and serves industries such as the watch, bicycle, medical and machinery industries, kitchen and household appliances, as well as designers and design offices. From single parts to large series – produced at the Grenchen site.
- Site
- Grenchen
- Processes
- Painting (surface finishing by hand or painting machines, flatbed machine/spindle machine), PVD coating (vacuum coating), Pad printing (4-color, incl. round parts with rotary fixture, up to 80x80mm), Screen printing (up to 300x150mm, with optional protective coating), Mechanical machining / CNC manufacturing of components and assemblies, Consulting, development, feasibility assessment incl. sampling, 100% quality inspection by visual check or precision magnifier
- Materials
- Plastic, Metal, Painting, PVD coating, Pad printing, Screen printing
- Certificates
- ISO 9001:2015, ISO 14001:2015
- Founded
- 1998
- Industries
- Watch industry, Medical technology, Kitchen and household appliances, Machinery industry, Bicycle industry, Building technology
- 01
Consulting + Development
- 02
Feasibility assessment incl. sampling
- 03
Cost calculation
- 04
CNC manufacturing / mechanical machining
- 05
Painting
- 06
PVD coating
- 07
Pad printing / screen printing
- 08
100% quality inspection
- 09
Logistics
Materials and Processes
Plastic
Finishing and machining of plastic parts for household goods, electrical appliances and medical technology.
Metal
Finishing and machining of metal parts for watches, hearing aids and mechanical engineering.
Painting
Surface finishing by hand or on a flatbed machine or spindle machine depending on the component geometry.
PVD coating
Vacuum coating since 2007 for functional and optical enhancement of the component surface.
Pad printing
4-color printing up to 80x80 mm, since 2022 with a rotary fixture for cylindrical parts.
Screen printing
Printing of flat surfaces up to 300x150 mm with variable color transparency.
Location
Grenchen
CHDevelopment, mechanical manufacturing and surface finishing
- Lot size
- Single parts to large series
- Materials
- Plastic, metal
- 4-color pad printing machine (rotary fixture 2022)
- Flatbed machine
- Spindle machine
- PVD vacuum coating system
- Screen printing machine
- Color mixing system (RAL, NCS, Pantone)
- CNC machining machines
Components

Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Painting (surface finishing by hand or painting machines, flatbed machine/spindle machine)Surface | – | – | – | Single parts – Large series | Plastic, Metal |
| PVD coating (vacuum coating)Surface | – | – | – | – | Plastic, Metal |
| Pad printing (4-color, incl. round parts with rotary fixture, up to 80x80mm)Surface | – | 80 mm × 80 mm | – | Single products – Large series | all material types |
| Screen printing (up to 300x150mm, with optional protective coating)Surface | – | 300 mm × 150 mm | – | Single products – Large series | all material types |
| Mechanical machining / CNC manufacturing of components and assembliesMachining | – | – | – | – | Plastic, Metal |
| Consulting, development, feasibility assessment incl. samplingEngineering | – | – | – | – | – |
| 100% quality inspection by visual check or precision magnifierTesting | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 4-color pad printing machine (fully automatic printing machine, 2022 with rotary fixture for | – | – | Printing up to 80x80mm | 2016 (Dreh | Grenchen |
| Painting machine flatbed machine | – | – | – | – | Grenchen |
| Painting machine spindle machine | – | – | – | – | Grenchen |
| PVD vacuum coating system | – | – | – | 2007 | Grenchen |
| Screen printing machine | – | – | Printing up to 300x150mm | – | Grenchen |
| Color mixing system (RAL, NCS, Pantone) | – | – | – | – | Grenchen |
| CNC machining machines (mechanical department) | – | – | – | 2025 (Aufb | Grenchen |
Quality
Quality is ensured by 100% inspection; every part is checked visually or with a precision magnifier. The company is certified according to ISO 9001:2015 and ISO 14001:2015 (Reg. No. CH-42425, SQS/IQNET).
| Evidence | Grenchen |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 |
Company History
- 1998
Founded by Rolf Mathys and Hansjürg Moser in Grenchen with a focus on coating and printing of watch dials.
- 2004
Conversion into a public limited company (AG); expansion to plastic and metal parts for household goods, electrical appliances and medical technology.
- 2007
Purchase of a PVD vacuum coating system.
- 2009
Separation of the company founders; Rolf Mathys passes away, Pia Mathys, Hansjürg Moser and Bruno Wyss join the board of directors.
- 2012
Introduction of a quality assurance system and a PPS system.
- 2016
Certification according to ISO 9001:2015 and purchase of a 4-color pad printing machine.
- 2017
Purchase of a property in Grenchen with renovation and extension.
- 2020
Relocation to Lengnaustrasse 10 in Grenchen.
- 2022
First certification according to ISO 14001:2015; rotary fixture for the pad printing machine.
- 2025
Establishment of an in-house mechanical department for components and assemblies.