Warp and weft at least two yarn to interweave once, the use of adding latitude and longitude, change fabric structure, collectively known as twill fabrics.
Fabric Organization for the second on the twill, 45° left oblique fabric, the positive twill lines are obvious, mottled twill the opposite side is not very obvious. The number of warp and weft yarns is close, and the yarn is slightly more dense than that of khaki.
Twill fabric is divided into two kinds of coarse twill and fine twill
Denim with more than 32nd (18 British) cotton yarn for warp, weft, fine twill with the following 18th (32 more than) cotton yarn as warp, weft. Denim has a white, bleach and noise and other types, commonly used as uniforms, sportswear, sports shoes folder, emery cloth cloth and gasket material. Wide-width bleaching twill can be used as sheet, after printing processing can also be used as bed linen. The element color and variegated fine twill are polished by electro-optic or calendering, and can be used as umbrella face and garment clamp.
There are positive and negative points, a complete organization of the cycle within the interwoven point, the floating line is longer, feel soft, the fabric density is higher, the product is relatively thick, the organization of three-dimensional sense is stronger. There are 30 branches, 40, 60 branches.