Injection-moulded articles, toolmaking and plastic components for windows, doors, accessories and industry – from development to series production, all from a single source.
Grotefeld Kunststofftechnik GmbH
Bad Oeynhausen (Headquarters, Production, Toolmaking)New on Amplifa
About Grotefeld Kunststofftechnik
Grotefeld Kunststofftechnik GmbH in Bad Oeynhausen has been developing and producing injection-moulded articles and plastic assemblies as well as injection moulds in its own toolmaking shop since 1987. Its core competencies include consulting, cost estimation, project management, product design, article construction with Moldflow simulation, prototyping, tool design and manufacture, as well as injection moulding production, assembly and finishing – all from a single source. Common plastics such as PVC, ABS, PA, PC, PE, PMMA, POM, PP and PS are processed, including glass-fibre-reinforced, UV-stabilised and flame-retardant materials; the colour range comprises more than 100 colours. Injection moulding is carried out horizontally, vertically in the parting plane, using the two-component process and as overmoulding of insert parts, with component weights from a few tenths of a gram to 1,000 grams. For the window and door industry, the company supplies its own range of weldable corner connectors, drainage caps, balcony door handles, glazing blocks and accessories that fit common profile systems. Other industrial sectors are supplied with custom plastic components.
- Site
- Bad Oeynhausen
- Processes
- Injection moulding production (horizontal, vertical in parting plane, 2-component, overmoulding of, Tool manufacture (injection moulds in own toolmaking shop), Tool design, Product design / product development, Article construction incl. Moldflow simulation and feasibility studies, Prototyping (stereolithography, conventional prototype construction, additive 3D printing), Assembly and finishing/packaging of articles and assemblies, Consulting, cost estimation, project management
- Materials
- PVC, ABS, PA, PC, PE, PMMA, POM, PP
- Certificates
- ISO 9001:2015, ISO 9001
- Founded
- 1987
- Industries
- Window construction, Door construction, Construction accessories, Plastics processing, Various industrial sectors
- 01
Consulting and cost estimation
- 02
Project management
- 03
Product design and product development
- 04
Article construction (CAD, Moldflow simulation)
- 05
Prototyping
- 06
Tool design
- 07
Tool manufacture in own toolmaking shop
- 08
Injection moulding production
- 09
Finishing, assembly and finishing/packaging
- 10
Quality assurance and shipping
Locations
Bad Oeynhausen
DEHeadquarters, production, toolmaking and design
- Part weight / size
- 0.1 g to 1,000 g per component
- Lot size
- Prototype to series production
- Materials
- PVC, ABS, PA, PC, PE, PMMA, POM, PP, PS among others
- Injection moulding machines with clamping forces from 25 t to 160 t (horizontal, vertical, 2-component)
- Peripherals
- Toolmaking machine park with milling/machining centres
Components and Product Areas
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Injection moulding production (horizontal, vertical in parting plane, 2-component, overmoulding ofPlastics | – | – | a few tenths of a gram – 1,000 grams | – | PVC, ABS, PA, PC, PE, PMMA, POM, PP, PS, glass-fibre-reinforced plastics, UV-stabilised plastics, flame-retardant plastics |
| Tool manufacture (injection moulds in own toolmaking shop)Plastics | – | – | – | – | Steel (standard components, highest-grade standard |
| Tool designEngineering | – | – | – | – | – |
| Product design / product developmentEngineering | – | – | – | – | – |
| Article construction incl. Moldflow simulation and feasibility studiesEngineering | – | – | – | – | – |
| Prototyping (stereolithography, conventional prototype construction, additive 3D printing)Additive | – | – | – | Small series | durable plastics |
| Assembly and finishing/packaging of articles and assembliesAssembly | – | – | – | – | – |
| Consulting, cost estimation, project managementEngineering | – | – | – | – | – |
| Product finishingSurface | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Injection moulding machines with peripherals, clamping forces 25 t to 160 t (horizontal, vertical, | – | – | – | – | Bad Oeynhausen |
| Toolmaking machine park (milling/machining centres, not specified) | – | – | – | – | Bad Oeynhausen |
Additional services
Reference customers
Quality
A quality management system in accordance with DIN EN ISO 9001 has been in place since 2009 and in accordance with standard 9001:2015 since 2018. All processes are governed by a clearly defined process chain; continuous improvements and tested article quality are implemented.
| Evidence | Bad Oeynhausen |
|---|---|
| ISO 9001 |
History
- 1987
Founded by Hans Dieter Grotefeld with 2 further partners; start of injection moulding production with one machine.
- 1988
Move to a larger rented building; hiring of the first employees and acquisition of additional machines.
- 1989–2000
Continuous growth; establishment of an own design department and own toolmaking shop.
- 2001
Considerable enlargement of the production area.
- 2007
Renaming of Grotefeld + Kruse GmbH to Grotefeld Kunststofftechnik GmbH; Hans Dieter Grotefeld becomes sole shareholder; acquisition of an own production and warehouse building.
- 2008
Move into the newly acquired building after 7 months of conversion work.
- 2009
Introduction of a quality management system in accordance with DIN EN ISO 9001:2008.
- 2014
Introduction of a new ERP system with production integration.
- 2018
Pascal Grotefeld becomes a member of the management; QM migrated to DIN EN ISO 9001:2015.