Woven fabrics are also the weaving fabrics we often say. It is made up of two or more sets of mutually perpendicular yarns, which are interwoven with warp and weft at a 90 degree angle. The yarn in the length direction of the cloth is called warp yarn, and the yarn in the transverse direction is called weft yarn.
When judging the warp and weft yarns, it is generally necessary to look at the cloth edge first, and the parallel cloth edge direction is the warp yarn. If it is a small piece of edgeless cloth, the warp yarn is coarse and the weft is fine.