(1) By using the change of jacquard structure or sley method, three warp yarns are used as a group, and one sley tooth is inserted into the warp yarn, and the fabric with holes on the cloth surface can also be weaved, but the mesh is easy to move and the structure is unstable, so it is also called false gauze; (2) two groups of warp yarns (ground warp and skein warp) are used to twist each other to form a shed and interweave with the weft yarn (see gauze structure). Among them, the warping is a kind of special warping (also called half warping) which is sometimes twisted on the left side of the ground longitude. After one or five times of weft insertion, the warping is twisted to the right side of the ground longitude. The mesh shaped holes formed by interweaving the warping and weft are of stable structure, which is called the gauze; (3) the plain weave structure, the square weave, uses the reed density and the weft density to form the mesh (screen). There are also two kinds of knitted fabrics: weft knitted fabrics and warp knitted fabrics. The raw materials are generally nylon, polyester, spandex, etc. among them, warp knitted fabrics are generally woven by high-speed warp knitting machines in West Germany. The finished products of knitted fabrics are called many kinds.
