
Manufacture and processing of foams and filter products including impregnation, siliconization and reticulation

Lehmann Schaumstofftechnik GmbH
Unnau-KorbNew on Amplifa
About Lehmann Schaumstofftechnik
Lehmann Schaumstofftechnik GmbH is a company in the Westerwald region specializing in the manufacture and processing of foams and filter products. The product range includes melamine resin foam, PUR foams, viscoelastic foam, cold-cure foam, the company's own LSF composite foam, and filter foams made from polyester and glass fiber filter fleece. Also available are carbonized filters, activated carbon products such as water-grade activated carbon, acoustic foam for sound insulation, and filter inserts and accessories for aquaristics. In the special products segment, the focus is on the impregnation of foams, the siliconization of foams, and the reticulation of PUR foams. The products are used, among other things, in air filtration, industrial filter technology, acoustics and aquaristics. The company serves its customers from the Unnau-Korb site.
- Site
- Unnau-Korb
- Processes
- Manufacture and processing of foams and filter products, Impregnation of foams, Reticulation, Manufacture of filter foams, Siliconization of foams, Manufacture and processing of foams, Filter products, Industrial filters
- Materials
- Melamine resin foam, PUR foam, Viscoelastic foam, Cold-cure foam, LSF composite foam, Polyester filter fleece, Glass fiber filter fleece, Carbonized filters
- Industries
- Filter technology/Air filtration, Industrial filter technology, Acoustics/Sound insulation, Aquaristics
- 01
Manufacture of foams
- 02
Processing into filter products
- 03
Impregnation and siliconization
- 04
Reticulation
- 05
Assembly of filter inserts
Materials and Processes
Melamine resin foam
Rigid foam based on melamine resin, among other things for acoustic and sound insulation applications.
PUR foam
Polyurethane foam as a base material for filter foams and composite products.
Viscoelastic foam
Pressure-relieving foam material for adaptable applications.
Cold-cure foam
Elastïc PUR cold-cure foam for technical and filtration applications.
LSF composite foam
Proprietary composite foam from the LSF foam range.
Polyester filter fleece
Nonwoven fabric as a filter medium for air filters and filter inserts.
Glass fiber filter fleece
Glass fiber nonwoven as a filter medium for filtration applications.
Carbonized filters
Carbonized filter products for special filtration tasks.
Water-grade activated carbon
Activated carbon product for filter applications, among other things in aquaristics.
Siliconized foams
Siliconized foams as a special product with an impregnated surface.
Reticulation
Process for cell opening of PUR foams, e.g. for filter foams.
Impregnation
Impregnation of foams as a special process according to customer specifications.
Locations

Unnau-Korb
DEManufacture and processing of foams and filter products
- Materials
- Melamine resin foam, PUR foam, cold-cure foam, filter fleece, activated carbon
Components






Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture and processing of foams and filter productsPlastics | – | – | – | – | Foams, Filter fleece, Activated carbon |
| Impregnation of foamsSurface | – | – | – | – | Foams |
| ReticulationSurface | – | – | – | – | Polyurethane foams (PUR) |
| Manufacture of filter foamsPlastics | – | – | – | – | Polyester, Glass fiber, Melamine resin foam, PUR |
| Siliconization of foamsSurface | – | – | – | – | Foams |
Additional services