https://www.run-yuan.com/products/geogrid-warp-knitting-machine/ The main characteristic of a composite geotextile made by warp knitting machine is that the intersection of warp and weft is not curved and they are in a straight state. The two are bound firmly with binding wire, which can be integrated and synchronized, bear external force and distribute stress. When the external force is applied to tear the material, the yarn will gather along the initial crack to increase the tear strength.