Researchers at Auburm University in the United States used the NGSN equipment to find that the spunlace method can produce homespun fabrics. Geotextiles are produced by needle punching and hot rolling.
Researchers found that changing the hydroentanglement pressure and the time the fiber mesh is exposed to the water needle can change the pore size of the geotextile. Pore size is a key indicator of geotextile, especially when it is used as a sand filter layer to allow water to pass through and prevent soil movement.
Extending the time that the fiber web is subjected to the action of water needles or increasing the hydroentanglement pressure can enhance the hydroentanglement effect of the web and reduce the fabric pore size. The aperture size can be adjusted online without stopping, thus increasing the production speed, which is more flexible and simpler than other processing techniques of geotextiles.
