Manufacturer of filters, porous molded parts and pleated filters made from sintered plastic POROPLAST including filter housings.
Alfred Durst Filtertechnik GmbH
Besigheim (Baden-Württemberg), GermanyNew on Amplifa
About Alfred Durst Filtertechnik
Alfred Durst Filtertechnik GmbH in Besigheim specializes in the separation of particles from air, gas and liquids. The core product is the in-house developed polymeric sintered plastic POROPLAST, a porous plastic that can be classified into defined grain size ranges before processing and modified with additives — for example towards hydrophilic, antistatic, absorbent, colored or strength/stiffness-enhancing behavior. From this material, the company produces porous molded parts, pleated filter cartridges made to drawing, fabric filters, aeration elements and pneumatic silencers for compressed air. Filter housings are offered as standardized single-wall injection-molded housings or designed, engineered and built to vessel regulations in-house or at sub-suppliers. Durst develops and builds most of its production and testing equipment itself; manufacturing ranges from smallest batches and zero series, through drawing-conformant custom-made parts, to large-scale series. Customer industries include mechanical engineering, biotechnology, automation technology and powder coating.
- Site
- Besigheim
- Processes
- Production of sintered plastics (POROPLAST, porous polymeric sintered plastic) incl., Production of porous molded parts from sintered plastic (compaction of sintered and porous molded, Production of pleated filter cartridges / pleated filters made to drawing (pleated filters), Filter housing production: standardized single-wall injection-molded housings as well as, Milling (as part of development and custom manufacturing), Turning (as part of development and custom manufacturing), Development and design of customer-specific filter solutions (drawing-conformant, Final inspection / testing (In-house production and testing equipment, testing until the result is
- Materials
- POROPLAST (polymeric sintered plastic, porous, modifiable e.g. hydrophilic, antistatic,, Porous plastics / sintered plastics (general), Fabric (fabric filters), POROPLAST (polymeric sintered plastic), Sintering of porous plastics, Plastic injection molding, Machining (milling and turning)
- Industries
- Mechanical engineering, Biotechnology, Automation technology, Powder coating
- 01
Development and design of customer-specific filter solutions
- 02
Classification of the sintered plastic POROPLAST into grain size ranges
- 03
Modification with additives (e.g. hydrophilic, antistatic, colored)
- 04
Compaction into porous sintered molded parts on in-house developed machines
- 05
Production of pleated filter cartridges made to drawing
- 06
Injection molding and construction of filter housings according to vessel
- 07
Machining (milling/turning) for custom-made parts
- 08
Final inspection and testing on in-house developed testing equipment
Materials and Processes
POROPLAST (polymeric sintered plastic)
Porous, in-house developed sintered plastic for filtration, sound attenuation and fluidization, modifiable e.g. hydrophilic, antistatic or colored.
Sintering of porous plastics
Compaction of sintered and porous molded parts according to defined grain size and grain structure classes.
Plastic injection molding
Standardized single-wall injection-molded housings for filter applications.
Fabric (fabric filters)
Filter media for the separation of particles from air, gas or liquids.
Machining (milling and turning)
Machining for drawing-conformant custom-made parts, zero series and smallest batches.
Locations
Besigheim
DEPlant / Production
- Lot size
- Smallest batches / zero series up to large-scale series
- Materials
- POROPLAST (sintered plastic), porous plastics, plastic (injection molding), fabric
- In-house developed production machines for the compaction of sintered and porous molded parts with process data loading from the central computer
- Machine park for the production of pleated filter cartridges
- In-house developed testing equipment
- Milling and turning machines for custom-made parts
Components and Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of sintered plastics (POROPLAST, porous polymeric sintered plastic) incl.Plastics | – | – | – | Smallest batches / zero series – Large-scale series production | POROPLAST (polymeric sintered plastic, porous) |
| Production of porous molded parts from sintered plastic (compaction of sintered and porous moldedPlastics | – | – | – | – | POROPLAST (polymeric sintered plastic) |
| Production of pleated filter cartridges / pleated filters made to drawing (pleated filters)Plastics | – | – | – | – | porous plastics (POROPLAST) |
| Filter housing production: standardized single-wall injection-molded housings as well asPlastics | – | – | – | – | plastic (injection molding) |
| Milling (as part of development and custom manufacturing)Machining | – | – | – | Smallest batches / zero series | – |
| Turning (as part of development and custom manufacturing)Machining | – | – | – | Smallest batches / zero series | – |
| Development and design of customer-specific filter solutions (drawing-conformantEngineering | – | – | – | – | – |
| Final inspection / testing (In-house production and testing equipment, testing until the result isTesting | – | – | – | – | – |
| Pneumatic silencers made from POROPLAST for compressed air (sound attenuation by absorption ofPlastics | – | – | – | – | POROPLAST (polymeric sintered plastic) |
| Filtration / separation of particles from air, gas or liquids (high-tech filters,Plastics | – | – | – | – | POROPLAST (porous sintered plastic), Fabric (fabric filters) |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| In-house developed production machines for the compaction of sintered and porous molded parts | – | – | – | – | Besigheim |
| Machine park for the production of pleated filter cartridges | – | – | – | – | Besigheim |
| In-house developed testing equipment | – | – | – | – | Besigheim |
| Milling and turning machines (generic, for custom-made parts) | – | – | – | – | Besigheim |
Additional services