Development and production of custom PUR foam molded parts and semi-finished products from the prototype through to series production.
H & P Kunststofftechnik GmbH
Stemwede-SundernNew on Amplifa
About us
H & P Kunststofftechnik GmbH was founded in Stemwede in 1993 and specializes in polyurethane processing. The company foams semi-finished products and finished parts to customer specifications from four foam families: flexible foam (14–300 kg/m³), flexible integral skin foam (220–600 kg/m³, Shore A 10–90°), rigid integral skin foam (220–900 kg/m³, Shore D 35–85°) and rigid foam (35–120 kg/m³) for upholstery, housings and insulation. Twelve foaming machines at one site are used with high-pressure, low-pressure and piston metering systems — from small batches to high volumes. On request, tested flame-retardant PUR systems are offered for applications with elevated fire protection requirements. Toolmaking is carried out in cooperation with long-standing partners. Customers come from the furniture and automotive industries, rail vehicle manufacturing and the construction industry. The company is part of the WTM-Group.
- Site
- Stemwede-Sundern
- Processes
- High-pressure foaming (PUR), Low-pressure foaming (PUR, free foaming, large formats), Piston metering (PUR, filled and flame-retardant foamed systems, high-viscosity components), Flexible foam molded parts (14–300 kg/m³), Flexible integral skin foam (220–600 kg/m³, Shore A 10–90°), Rigid integral skin foam (220–900 kg/m³, Shore D 35–85°), Rigid foam (35–120 kg/m³, insulation & thermal isolation), Flame-retardant PUR systems (flexible foam, flexible integral skin foam, rigid integral skin foam)
- Materials
- Polyurethane (PUR), PUR flexible foam (14–300 kg/m³), PUR flexible integral skin foam (220–600 kg/m³, Shore A 10–90°), PUR rigid integral skin foam (220–900 kg/m³, Shore D 35–85°), PUR rigid foam (35–120 kg/m³), Flame-retardant PUR systems
- Founded
- 1993
- Industries
- Furniture industry, Automotive industry, Rail vehicle manufacturing, Construction industry / public construction
- 01
Development from the prototype to series production
- 02
Toolmaking (with partners)
- 03
Initial sampling
- 04
PUR foaming (semi-finished and finished parts)
- 05
Quality assurance and batch documentation
- 06
Series production
Materials & Processes
PUR flexible foam (14–300 kg/m³)
Upholstery and core parts for furniture, automotive and more.
PUR flexible integral skin foam (220–600 kg/m³, Shore A 10–90°)
Soft integral parts with a closed surface for upholstery applications.
PUR rigid integral skin foam (220–900 kg/m³, Shore D 35–85°)
Technical housings and components with a hard, load-bearing surface.
PUR rigid foam (35–120 kg/m³)
Insulation and thermal isolation for construction and industrial applications.
Flame-retardant PUR systems
Tested systems for rail vehicles, public buildings, automotive and furniture.
Sites
Stemwede-Sundern
DEProduction and administration
- Lot size
- Small batches to high volumes
- Materials
- PUR flexible foam, flexible integral skin foam, rigid integral skin foam, rigid foam, flame-retardant systems
- 12 foaming machines
- High-pressure foaming machines
- Low-pressure foaming machines
- Piston metering systems
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| High-pressure foaming (PUR)Plastics | – | – | – | Small batches – high volumes | Polyurethane |
| Low-pressure foaming (PUR, free foaming, large formats)Plastics | – | – | – | – | Polyurethane |
| Piston metering (PUR, filled and flame-retardant foamed systems, high-viscosity components)Plastics | – | – | – | – | Polyurethane |
| Flexible foam molded parts (14–300 kg/m³)Plastics | – | – | – | – | Polyurethane flexible foam |
| Flexible integral skin foam (220–600 kg/m³, Shore A 10–90°)Plastics | – | – | – | – | Polyurethane flexible integral skin foam |
| Rigid integral skin foam (220–900 kg/m³, Shore D 35–85°)Plastics | – | – | – | – | Polyurethane rigid integral skin foam |
| Rigid foam (35–120 kg/m³, insulation & thermal isolation)Plastics | – | – | – | – | Polyurethane rigid foam |
| Flame-retardant PUR systems (flexible foam, flexible integral skin foam, rigid integral skin foam)Plastics | – | – | – | – | Polyurethane |
| Semi-finished and finished part foaming to customer specificationsPlastics | – | – | – | – | Polyurethane |
| Toolmaking (in cooperation with partners)Engineering | – | – | – | – | – |
| Quality assurance / batch documentation and testingTesting | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Foaming machine (high-pressure) | – | – | – | – | Stemwede-Sundern |
| Foaming machine (low-pressure) | – | – | – | – | Stemwede-Sundern |
| Piston metering system | – | – | – | – | Stemwede-Sundern |
| Foaming machines (total) | – | 12 | – | – | Stemwede-Sundern |
Additional services
History
- 1993
Foundation in Stemwede as a specialist in polyurethane processing
- 2025
Generational change: in October 2025 Volker Heidmeyer hands over the management to Christian Meyer and Dr. Florian Trilling; the company is part of the WTM-Group