"A range of white heat bonded nonwoven geotextiles that offer the highest levels of engineering performance and quality standards when used in the applications of Separation and Filtration.". Soil separation, filtration or erosion control? The NW range of Staple Fibre Needle Punched and Thermally Bonded Nonwoven Geotextiles have been designed to offer optimum performance per unit weight. Their resulting mechanical robustness and excellent hydraulic properties make them the ideal choice for separation and filtration. Produced on state of the art equipment, the Bontec NW geotextile range sets standards in terms of quality and mechanical performance.