Manufacturing of injection-molded parts and particle foam assemblies for industry in Bielefeld
Bielefelder Hohlträgerfabrik GmbH
Bielefeld · GermanyNew on Amplifa
About Bielefelder Hohlträgerfabrik
Bielefelder Hohlträgerfabrik GmbH (BHB) is a family-owned manufacturing company based in Bielefeld-Brackwede with around 60 employees. The company manufactures technical thermoplastic assemblies and components by injection molding as well as parts made of particle foam (EPS, Neopor) with part sizes from 0.001 to 1,600 liters. In injection molding, prototypes and small series are produced on machines with clamping forces up to 1,000 tonnes; the material range covers approximately 300 material types, including high-performance materials such as PEEK and polysulfones as well as transparent visual parts. In addition, BHB produces composite assemblies made of plastic and particle foam with targeted physical properties, among other things for temperature-controlled transport solutions and sound-insulated cladding. The range of services extends from design and material selection consulting, toolmaking and mechanical, thermal and chemical post-processing to assembly, functional testing and just-in-time logistics. Customers come from medical technology, food technology, household appliance technology, the automotive industry, and water, heating and climate technology.
- Site
- Bielefeld
- Processes
- Injection molding (prototypes and small series, large-format parts), Multi-component injection molding, Overmolding of insert components, Particle foam processing (among others EPS, Neopor), Composite manufacturing of plastic-particle foam assemblies (all applicable joining methods), Mechanical, thermal and chemical post-processing methods, Assembly and functional testing of complex assemblies, Toolmaking / tool projects
- Materials
- PEEK, Polysulfones, EPS / Neopor (particle foam), Thermoplastics (technical plastics, ~300 material types), Recyclates / renewable raw materials, Sheet metal (historical, folded for hollow beams), Injection molding, Multi-component injection molding
- Certificates
- ISO 9001:2015, ISO 50001 (DIN EN ISO 50001), ISO 50001
- Founded
- 1899
- Employees
- 60
- Industries
- Medical technology, Food technology, Household appliance technology, Automotive industry, Water, heating and climate technology
- 01
Design and engineering consulting
- 02
Material selection
- 03
Toolmaking
- 04
Injection molding / particle foam processing
- 05
Post-processing (mechanical, thermal, chemical)
- 06
Assembly and functional testing
- 07
Packaging and just-in-time logistics
Materials and Processes
Injection molding
Manufacturing of prototypes and small series of large-format parts on machines with up to 1,000 t clamping force.
Multi-component injection molding
Multi-component parts including overmolding of insert components.
Particle foam processing (EPS, Neopor)
Lightweight, moisture-resistant 3D materials for impact and vibration absorption, thermal insulation and sound insulation.
Composite manufacturing
Application-oriented combination of injection molding and particle foam technology using all applicable joining methods.
PEEK
High-performance material for demanding technical applications in injection molding.
Polysulfones
High-performance thermoplastics for technical parts and transparent visual parts.
Technical thermoplastics (approx. 300 material types)
Broad material spectrum including recyclates and renewable raw materials.
Locations
Bielefeld
DEProduction and administration
- Part weight / size
- Injection molding: 0.2–6,000 g; particle foam: 0.001–1,600 l
- Lot size
- Prototypes, small series
- Materials
- Thermoplastics, PEEK, polysulfones, EPS, Neopor
- Injection molding machines with up to 1,000 t clamping force
- Particle foam processing system
Parts
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Injection molding (prototypes and small series, large-format parts)Plastics | – | – | 0.2 g – 6,000 g | Small series | Thermoplastics, PEEK, Polysulfones |
| Multi-component injection moldingPlastics | – | – | – | – | PEEK, Polysulfones, transparent thermoplastics |
| Overmolding of insert componentsPlastics | – | – | – | – | Thermoplastics |
| Particle foam processing (among others EPS, Neopor)Plastics | – | – | – | – | Particle foam plastics, EPS, Neopor |
| Composite manufacturing of plastic-particle foam assemblies (all applicable joining methods)Joining | – | – | – | – | Thermoplastics, Particle foam |
| Mechanical, thermal and chemical post-processing methodsPlastics | – | – | – | – | Thermoplastics |
| Assembly and functional testing of complex assembliesAssembly | – | – | – | – | – |
| Toolmaking / tool projectsEngineering | – | – | – | – | – |
| Design and engineering consulting, plastics-optimized detail design, material selectionEngineering | – | – | – | – | Thermoplastics, Particle foam |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Injection molding machine | – | – | Clamping force up to 1,000 tonnes | – | Bielefeld |
| Particle foam processing system | – | – | Part sizes 0.001–1,600 l | – | Bielefeld |
Additional services
Quality
The manufacturing of plastic injection-molded parts, EPS packaging and Neopor building systems is certified according to ISO 9001:2015 (TÜV Rheinland, initial certification 2012). An energy management system according to ISO 50001 is installed; the company also participates in the IK initiative "Zero Pellet Loss".
| Evidence | Bielefeld |
|---|---|
| ISO 9001:2015 | |
| ISO 50001 |
History
- 1899
Five Bielefeld merchants found Bielefelder Hohlträgerfabrik GmbH in Brackwede; production of hollow beams made from folded sheet metal for the patented solid ceiling "Germania".
- 1900
Expansion into the production of metal bottle capsules for the wine and spirits industry.
- 1958
Establishment of injection molding production for technical assemblies made of thermoplastics.
- 1971
Establishment of a production facility for particle foam parts.