F filter fabrics are geocomposites, consisting of two layers of mechanically bonded continuous-filament nonwoven made from 100% polypropylene.
One filament layer is designed as a filter, the other as a protection layer preventing mechanical damage to the filter. The optimised opening size ensures excellent long-term filter performance. F is particularly suitable in cases where critical soils place high demands on the filter properties of the geotextile, or when high mechanical stresses are expected.
F is used in river-bank and bed protection, coastal protection, land reclamation and dike construction.