Manufacture of high-frequency welded PVC double-membrane gas holders and complete systems for biogas plants
dbds - Deutsche Biogas Dach-Systeme GmbH
Kreuzau-Stockheim · Düren-GürzenichNew on Amplifa
About dbds
dbds - Deutsche Biogas Dach-Systeme GmbH, based in Kreuzau-Stockheim (district of Düren), is a system supplier of double-membrane gas holders for biogas plants. Founded in 2011 as a subsidiary of Verseidag-Indutex (Krefeld) and Seybold (Düren), the company manufactures biogas membranes from PVC-coated polyester fabric (areal weights 800–1,500 g/m²) using high-frequency welding processes at two plants in Kreuzau and Düren-Gürzenich, operating in three shifts. In addition to the membranes, dbds delivers a complete system with stainless steel components (clamping rails, central support, crown ring), polyester strap substructure, support air supply, over/underpressure protection and gas level measurement technology. The range of services includes consulting and design, verifiable structural calculations according to DIN EN 1991-1-4, implementation of TRAS-120, assembly by two installation teams as well as research and development, among other things with the LowE technology for reducing heat losses. Customers come from agriculture, industry, municipal energy supply, wastewater treatment plants and biowaste fermentation; since 2011 more than 3,500 roofs have been sold, and projects have also been delivered to Turkey and worldwide.
- Site
- Kreuzau
- Processes
- High-frequency welding of PVC membranes (double-membrane gas holders), Seam width 80 mm, high-frequency welded, Sewing (confectioning with sewing machines), Coating with aluminium particles (LowE technology, factory-applied), Structural calculation according to DIN EN 1991-1-4 (verifiable structural analyses), Assembly (service assignments, leading assembly work, complete installations, 2 installation teams), Technical design/consulting of roof systems and components (support air supply etc.), Consulting and design of roof systems and components
- Materials
- PVC-coated polyester fabric (800–1,500 g/m²), VERSEIDAG Classic 900, VERSEIDAG Classic 800, VERSEIDAG Classic 1100, VERSEIDAG Classic 1300, VERSEIDAG Classic 1500, VERSEIDAG TAG B3110, FPP gas storage film, 1 mm
- Certificates
- DIN 4102 B1 (flame retardant), DIN EN 1991-1-4 (structural analysis), TRAS-120 implementation, VinylPlus® Product Label (parent company)
- Founded
- 2011
- Industries
- Biogas, Agriculture, Industry, Municipal energy supply, Wastewater treatment plants, Biowaste fermentation
- 01
Consulting and design of roof systems and components
- 02
Structural calculation according to DIN EN 1991-1-4
- 03
Cutting and high-frequency welding of the PVC membranes
- 04
Manufacture/supply of components (stainless steel, strap layer, measurement
- 05
Assembly by two installation teams
- 06
Service and research & development
Materials and Processes
PVC-coated polyester fabric (800–1,500 g/m²)
Base material of the double membranes, flame retardant according to DIN 4102 B1 and UV-resistant.
High-frequency welding
Joining process for maximum durability of the membrane seams, seam width up to 80 mm.
VERSEIDAG Classic 800/900/1100/1300/1500
PVC flat materials from the parent company Verseidag-Indutex for outer and inner membranes of different strengths.
VERSEIDAG TAG B3110
Material for inner membranes, among other things used for the external gas holder in Burdur.
FPP gas storage film, 1 mm
Film material for inner membranes of external gas holders with low methane permeation.
Stainless steel, corrosion-resistant
Material of all metallic components such as clamping rails, central support and crown ring.
LowE coating (aluminium particles)
Factory-applied coating to reduce heat losses through the roof system.
Locations and Production
Kreuzau-Stockheim
DEHeadquarters, warehouse, dispatch and production site
- Part weight / size
- Double membranes up to hemispherical shape, container
- Lot size
- Project manufacturing, one-off production
- Materials
- PVC-coated polyester fabric, FPP film
- several high-frequency welding machines (three-shift operation)
Düren-Gürzenich
DEProduction site (Seybold Technische Konfektionen), technical processing, drawing office, R&D, test storage tank
- Part weight / size
- Double membranes up to hemispherical shape
- Lot size
- Project manufacturing, one-off production
- Materials
- PVC-coated polyester fabric
- production tables with high-frequency welding machines
- sewing machines
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| High-frequency welding of PVC membranes (double-membrane gas holders)Joining | – | – | – | – | PVC-coated polyester fabric, FPP gas storage film |
| Seam width 80 mm, high-frequency weldedJoining | – | – | – | – | VERSEIDAG Classic 1300, VERSEIDAG TAG B3110 |
| Sewing (confectioning with sewing machines)Joining | – | – | – | – | PVC membranes |
| Coating with aluminium particles (LowE technology, factory-applied)Surface | – | – | – | – | PVC membranes |
| Structural calculation according to DIN EN 1991-1-4 (verifiable structural analyses)Engineering | – | – | – | – | – |
| Assembly (service assignments, leading assembly work, complete installations, 2 installation teams)Assembly | – | – | – | – | – |
| Technical design/consulting of roof systems and components (support air supply etc.)Engineering | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| High-frequency welding machines | – | several | – | – | Kreuzau-Stockheim |
| Production tables with high-frequency welding machines | – | several | – | – | Düren-Gürzenich |
| Sewing machines | – | – | – | – | Düren-Gürzenich |
Additional services
Reference customers
Quality and Standards
The membranes are flame retardant according to DIN 4102 B1, UV-resistant, electrically dissipative and exhibit low methane permeation. All roof systems are delivered with verifiable structural calculations according to DIN EN 1991-1-4 taking into account snow and wind loads and, on request, according to TRAS-120.
| Evidence | Kreuzau-Stockheim |
|---|---|
| DIN 4102 B1 (flame retardant) | |
| DIN EN 1991-1-4 (structural analysis) | |
| TRAS-120 implementation | |
| VinylPlus® Product Label (parent company) |
History
- 2011
Foundation of dbds in Kreuzau-Stockheim as a subsidiary of Verseidag-Indutex (Krefeld) and Seybold (Düren)
- 2018
Project Köhlbrandhöft wastewater treatment plant, Hamburg (approx. 6,500 m³ gas holder)
- 2019
External gas holders Dolgen am See (approx. 7,500 m³) and Burdur, Turkey (approx. 6,000 m³); project BGA Wurzen
- 2020
Projects BGA Eberdingen and BGA Genthin; VinylPlus® Product Label for parent company Verseidag-Indutex (March 2020); significant increase in staff
- 2022
Project BGA Bützow (8 containers)
- 2023
Project Cüstriner Bioenergie (5 containers with LowE coating)