Unreinforced PVC-P synthetic sheet obtained by coextrusion. Upper side (light green) in ‘Signal Layer’ form. Bottom side (dark gray) resistant to puncture and root attack.
Flagon® BSL is not UV resistant. Another version, Flagon® BSL/300 is available with a 300 g/m² non-woven polyester fabric geo-fabric attached to the underside of the membrane.
规格
It is highly resistant to attack by microorganisms and roots. Its sides have two different colors:
- the upper side (light green), which is less than 20% of the total thickness, forms the “signal layer”.
- The lower side (dark gray) is extremely resistant to puncturing and root attack.
Application
- Tunnels and dug and drilled galleries,
- Covered trenches,
- Coverings of buried works and underground works,