A karfe da filastik grating ana kiransa karfe-roba composite geogrilles, shi ne high ƙarfi karfe waya (ko wasu fiber), bayan musamman magani, tare da polyethylene (PE), da kuma ƙara wasu Additives, ta hanyar extrusion yin shi a hada high ƙarfi tensile tsiri. , tare da matsananciyar matsawa, wanda kuma aka sani da babban ƙarfin ƙarfafa geostrip.