
Manufacturer of vermiculite and perlite products, molded parts and fire protection systems
Dämmstoff-Fabrik Klein GmbH
Bubenheim (Rhineland-Palatinate)New on Amplifa
About Dämmstoff-Fabrik Klein
Dämmstoff-Fabrik Klein GmbH is a specialist in refining the natural raw materials vermiculite and perlite and manufactures insulating materials, loose fills, aggregates and customer-specific molded parts from them. Vermiculite is expanded in the company's own exfoliation operation at 800 to 1000 °C without additives; since 1979 an own perlite expansion plant has been available. Since 1985 the company has produced, under the Kawalite brand, temperature-resistant (up to 1,150 °C) vermiculite boards, blocks and molded parts, among other things as spacer rings, housings, protective caps and lost core parts in aluminium castings. Further product lines are the Hapuflam fire protection fabric and the Staudt fire protection system for cable penetrations with fire resistance class S90 according to DIN 4102-9. Customers include the construction industry, electrical industry, automotive industry, foundries, power plant and boiler construction, safe and vault construction, shipbuilding, horticulture and pet supplies. The company has been on the market since 1959 and is based in Bubenheim (Rhineland-Palatinate).
- Site
- Bubenheim
- Processes
- Vermiculite exfoliation (exfoliating/expanding at 800-1000 °C), Perlite expansion plant (perlite expansion), Kawalite molded part production (vermiculite boards, blocks, molded parts, custom shaping), Vermiculite molded parts as spacer rings, housings, protective caps, Vermiculite core parts as lost cores in aluminium castings (e.g. car aluminium wheels), Fire protection systems (Hapuflam fire protection fabric/bandage, Staudt cable penetration S90,, Cable penetration with fire resistance class S90 according to DIN 4102-9 (mortar/sealant seals,, Insulating materials/levelling fills/dry loose fills and lightweight aggregates (Isoperl-2,
- Materials
- Perlite, Vermiculite, Kawalite (vermiculite molded part material), Isoperl-2, Isoperl-5, Vermiculite K0, Vermiculite K1, Vermiculite K2
- Certificates
- DIBt approvals (Z-19.15-800, Z-19.15-195), CE mark / ETA approval (Hapuflam), DIN 4102-9 fire resistance class S90, ISO 9001
- Founded
- 1979
- Industries
- Construction industry, Industry, Fire protection, Organic horticulture, Pet supplies, Renewable raw materials
- 01
Raw material (vermiculite/perlite)
- 02
Exfoliation/Expansion at 800–1000 °C
- 03
Conditioning and grading (grain sizes)
- 04
Molded part production (Kawalite)
- 05
Fire protection systems and distribution
Raw Materials & Processes
Vermiculite
Aluminium-iron-magnesium silicate (mica mineral), basic natural raw material for insulating materials, molded parts, binders and fire protection products.
Perlite
Silicate rock of volcanic origin, refined into Isoperl-2 and Isoperl-5 for insulation, packaging and as a liquid/chemical binder.
Kawalite (vermiculite molded part material)
Non-combustible, fibre-free natural mineral, temperature-resistant up to 1,150 °C, for boards, blocks and customer-specific molded parts.
TROMEX fire protection mortar
Fire protection mortar for S90 cable penetrations, DIBt test Z-19.15-800.
Fire protection sealant FTS-K
Fire protection sealant for cable penetrations in clean environments, DIBt test Z-19.15-195.
Hapuflam fire protection fabric
Tear-resistant, flexibly applicable fire protection fabric/bandage for electrical cables and cable systems, with CE mark and ETA approval.
Location

Bubenheim
DEHeadquarters and production
- Materials
- Vermiculite, perlite
- Vermiculite exfoliation operation (exfoliation plant)
- Perlite expansion plant (expansion facility)
- Kawalite molded part production
Products & Molded Parts









Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Vermiculite exfoliation (exfoliating/expanding at 800-1000 °C)Other (raw material refining) | – | – | – | – | Vermiculite |
| Perlite expansion plant (perlite expansion)Other (raw material refining) | – | – | – | – | Perlite |
| Kawalite molded part production (vermiculite boards, blocks, molded parts, custom shaping)Forming | – | – | – | – | Vermiculite |
| Vermiculite molded parts as spacer rings, housings, protective capsForming | – | – | – | – | Vermiculite |
| Vermiculite core parts as lost cores in aluminium castings (e.g. car aluminium wheels)Casting | – | – | – | – | Vermiculite, Aluminium |
| Fire protection systems (Hapuflam fire protection fabric/bandage, Staudt cable penetration S90,Surface | – | – | – | – | Vermiculite, Perlite |
| Cable penetration with fire resistance class S90 according to DIN 4102-9 (mortar/sealant seals,Assembly | – | – | – | – | Fire protection mortar TROMEX, Fire protection sealant FTS-K |
| Insulating materials/levelling fills/dry loose fills and lightweight aggregates (Isoperl-2,Other (insulating material production) | – | – | – | – | Vermiculite, Perlite |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Vermiculite exfoliation operation (exfoliation plant) | – | 1 | – | 1959 | Bubenheim |
| Perlite expansion plant (expansion facility) | – | 1 | – | 1979 | Bubenheim |
| Kawalite molded part production | – | – | – | 1985 | Bubenheim |
Additional services
Quality
Continuous inspection of the raw material, the refining process and the end products ensures the flawless quality of the products. Fire protection products carry DIBt approvals as well as CE mark and ETA approval (Hapuflam).
| Evidence | Bubenheim |
|---|---|
| DIBt approvals (Z-19.15-800, Z-19.15-195) | |
| CE mark / ETA approval (Hapuflam) | |
| DIN 4102-9 fire resistance class S90 | |
| ISO 9001 |
History
- 1932
Willi Klein takes over the management of the lime works August Kaege in Harxheim/Zellertal
- 1959
Founding of "Willi Klein, Insulating Materials" as a vermiculite exfoliation operation; cornerstone of today's company
- 1961
Closure of the lime works August Kaege Nachf.
- 1975
Willi Klein passes away; continuation by son Friedhelm Klein
- 1979
Founding of Dämmstoff-Fabrik Klein GmbH and construction of a perlite expansion plant
- 1985
Commissioning of Kawalite molded part production
- 1996
New developments in preventive structural fire protection (Hapuflam) and founding of HaPu-Brandschutzsysteme GmbH
- 2010
Product and production expansion through acquisition of the Staudt cable penetration system