Contract coater for sandblasting, electrostatic powder coating and PVC plastisol rubber coating from one-off parts to large-scale series.
Frosch Oberflächentechnik GmbH
Finnentrop (Mühlenstraße 29)New on Amplifa
About us
Frosch Oberflächentechnik GmbH is a contract coating company in Finnentrop in the Sauerland region. Founded in 2018 by Frank Robert Schulze, the company offers a broad spectrum of surface treatment: sandblasting up to cleanliness grade SA3, electrostatic powder coating with epoxy, polyester and polyurethane powder coatings including corrosion protection up to protection class C5I/C5M, as well as PVC plastisol rubber coating by dip coating with layer thicknesses of 0.5 to 7 mm. The portfolio is complemented by paint stripping, in-house jig and fixture construction, cutting-plotter masking, 3D printing, assembly, and shipping and transport. Materials processed include steel, stainless steel, aluminium, copper, hot-dip galvanized components, plastics, glass and wood. Customers come from medical technology, mechanical engineering, the electrical industry, automotive (Tier 1), agricultural machinery, galvanizing plant construction and mining; in the surrounding region the company also serves private customers. From samples and one-off parts to series of more than 10,000 components, orders are manufactured individually; economical operation and ecological sustainability, such as nearly 100% material recovery and wastewater treatment, are part of the company philosophy.
- Site
- Finnentrop
- Processes
- Sandblasting (blast pre-treatment, derusting/depainting/descaling, sweeping, abrasive blasting), Electrostatic powder coating (epoxy, polyester, polyurethane, mixed powders; corrosion protection), PVC rubber coating (plastisol dip coating, layer thicknesses 0.5–7 mm, hardness Shore A70±5), Paint stripping, Jig and fixture construction (hanging racks, covering material, masking), Welding (MAG and TIG AC/DC), Tube bending, Plasma cutting
- Materials
- Steel, Stainless steel, Aluminium, Copper, hot-dip galvanized components, Plastics (temperature-resistant), Glass, Wood
- Certificates
- ESD specialist qualification in accordance with IEC/DIN EN 61340-5-1, ESD specialist in accordance with IEC/DIN EN 61340-5-1, ISO 9001:2015, ISO 14001:2015
- Founded
- 2018
- Industries
- Medical technology, Mechanical engineering, Electrical industry, Automotive, Agricultural machinery, Galvanizing plants
- 01
Sandblasting/pre-treatment
- 02
Masking (cutting plotter)
- 03
Powder coating
- 04
PVC rubber coating
- 05
Assembly
- 06
Shipping & transport
Materials & Processes
Sandblasting
Pre-treatment up to cleanliness grade SA3 with high-grade corundum or glass shot, from sweeping hot-dip galvanized parts to abrasive blasting.
Electrostatic powder coating
Solvent-free coating with epoxy, polyester and polyurethane powders including corrosion protection up to C5I/C5M.
PVC plastisol rubber coating
Dip coating with layer thicknesses of 0.5–7 mm, Shore A70±5, temperature resistant from -40°C to +80°C.
Jig and fixture construction
In-house production of hanging racks, covers and masks for short-notice customer requirements.
3D printing (FDM)
Gauges and components made of PETG, ABS or TPU.
Steel
Main material for powder coating, rubber coating and fixture construction.
Stainless steel
Blastable surfaces, including matting of stainless steel components.
Aluminium
Coatable, blastable (densification) and workable in fixture construction.
Copper
Coatable metal, e.g. for electrically insulating applications.
Plastic
Temperature-resistant plastics, glass and wood can also be rubber coated.
Locations
Finnentrop
DEHeadquarters/Production
- Lot size
- One-off to large-scale series (>10,000)
- Materials
- Steel, stainless steel, aluminium, copper, plastic
- 2 injector hand-blast cabinets (400–1000 L)
- Free-blast room with pressure blast blower (4000 L/min, up to 10 bar)
- 2 Gema powder guns
- 4 chamber ovens
- MAG and TIG AC/DC welding equipment
- Tube bending machine
- Segment bending machine
- Plasma cutting system
- Turning and milling machines
- 2 cutting plotters
- 3D printer
- 2 colour mixing systems
- Dipping tanks for rubber coating
- Partially automated rubber coating system
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sandblasting (blast pre-treatment, derusting/depainting/descaling, sweeping, abrasive blasting)Surface | – | – | – | One-off – Large-scale series | Stainless steel, Aluminium, Steel, hot-dip galvanized components |
| Electrostatic powder coating (epoxy, polyester, polyurethane, mixed powders; corrosion protection)Surface | – | – | – | One-off/sample – over 10,000 components | Steel, Metals |
| PVC rubber coating (plastisol dip coating, layer thicknesses 0.5–7 mm, hardness Shore A70±5)Surface | – | – | – | One-off – Large-scale series | Steel, Aluminium, Copper, Plastics, Glass, Wood |
| Paint strippingSurface | – | – | – | – | – |
| Jig and fixture construction (hanging racks, covering material, masking)Engineering | – | – | – | – | Steel, Aluminium, Plastic |
| Welding (MAG and TIG AC/DC)Joining | – | – | – | – | Steel, Aluminium |
| Tube bendingForming | – | – | – | – | Steel, Aluminium, Copper |
| Plasma cuttingMachining | – | – | – | – | Steel, Aluminium, Stainless steel |
| Sheet metal bending (segment bending machine)Forming | – | – | – | – | Steel, Aluminium, Sheet metal |
| TurningMachining | – | – | – | – | Steel, Aluminium, Plastic |
| MillingMachining | – | – | – | – | Steel, Aluminium, Plastic |
| DrillingMachining | – | – | – | – | Steel, Aluminium, Plastic |
| Cutting plotter (masking, stickers, lamination of sheet metal components)Surface | – | – | – | – | Foil, Sheet metal |
| 3D printing (FDM, with PETG, ABS, TPU)Additive | – | – | – | – | PETG, ABS, TPU |
| AssemblyAssembly | – | – | – | – | – |
17 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Injector hand-blast cabinet | – | 2 | 400–1000 L volume | – | Finnentrop |
| Free-blast room with pressure blast blower | – | 1 | 4000 L air flow/min at up to 10 bar | – | Finnentrop |
| Powder gun | Gema | 2 | – | – | Finnentrop |
| Chamber oven | – | 4 | – | – | Finnentrop |
| MAG welding equipment | – | – | – | – | Finnentrop |
| TIG AC/DC welding equipment | – | – | – | – | Finnentrop |
| Tube bending machine | – | – | – | – | Finnentrop |
| Segment bending machine | – | – | – | – | Finnentrop |
| Plasma cutting system | – | – | – | – | Finnentrop |
| Drilling machines | – | – | – | – | Finnentrop |
| Lathe | – | – | – | – | Finnentrop |
| Milling machine | – | – | – | – | Finnentrop |
| Cutting plotter | – | 2 | – | – | Finnentrop |
| 3D printer | – | 1 | – | 2020 | Finnentrop |
| Colour mixing system | – | 2 | – | – | Finnentrop |
| Dipping tanks (rubber coating) | – | – | – | – | Finnentrop |
| Partially automated rubber coating system | – | – | – | – | Finnentrop |
Additional services
Quality
Compliance with specifications is checked with various measuring devices and documented on request (including layer thickness measurement). An ESD specialist qualification in accordance with IEC/DIN EN 61340-5-1 is available for ESD-sensitive parts; an integrated management system in accordance with ISO 9001:2015 and ISO 14001:2015 is under development.
| Evidence | Finnentrop |
|---|---|
| ESD specialist in accordance with IEC/DIN EN 61340-5-1 | |
| ISO 9001:2015 | |
| ISO 14001:2015 |
History
- 2018
Founded as a sole proprietorship by Frank Robert Schulze in Finnentrop-Lenhausen on approx. 350 m² of hall area.
- 2020
Purchase of an own 3D printer; decision for further investments and planning of a new location (expected opening 2021).