Geotextile was used in the civil engineering over twenty years. Generally, geotextile needed excellent permeability in order to get high stability in soil, and its couldn't flow by larger gap inside geotextile. Therefore, we designed a new spread filament system in this study. Filament was spread by this system, and then was laid between two layer pre-needling web to reinforce the mechanical properties of the nonwoven with sandwich structure. In addition, we a1so discussed the influence of filament content and needling intensity on normal permeability of the nonwoven that contained filament.The result showed that normal permeability of spread filament was decreased when filament content from 200 g/m2 to 400 gI m2 and needling intensity from 200 needIe/ cm2 to 400 needIe/ cm2.
