Denim is a strong, durable cotton twill fabric woven with colored warp threads and white fill threads. From a technical point of view, denim is a warp-faced twill fabric. In which coarse and lower thread count is used. It is therefore a thick fabric. Denim is normally used to make jeans, overalls and other clothing. It was traditionally colored blue with indigo dye to make blue “jeans”. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the Original Essay Flow Chart of Denim Production: Raw Materials of Denim Fabrics: To produce good quality denim, the conditions must be optimal with regard to the quality of all raw materials and yarns used. For raw cotton and original carded (rotor) or ring spun yarn made from it, the following criteria are: Denim is a cotton or cotton-polyester blend or other combination of cotton with synthetic fibers, a durable and thick twill weave, and yarn-dyed fabric. Minimum fiber length: 2.7 cm. Short fibers are in a proportion of (less than 12 mm in length): less than 40%. The micronaire value is between 4.0 and 4.5. The uster device strength and elongation values ​​for CV uniformity and imperfections must conform to at least the 25% plot. Normally, the counting range of denim warp yarn is 50-90 tex and that of weft yarn is 75-4.5. 120 tex; Finer yarns as fine as 25 tex in twill or plain weave are often used in denim shirting. Twist factor from 4.5 to 5.0 for warp threads, 4.2 for weft threads. Less hairiness of the thread. High strength and uniformity of the yarn.Denim manufacturing: The term “Denim” comes from the city of Nîmes in France where “Serge de Nîmes” was manufactured. Denim is dyed using a vat dye, Indigo dye, which is applied in layers to the cotton fabric in a loose form. As far as the manufacturing process of denim is concerned, it is similar to that of gray fabric up to the weaving process with the only difference that in the case of denim fabric, the yarn of the denim is dyed at the sizing stage then than in the case of gray fabric. , the decision regarding the dyeing step depends on the finished product. Open end spinning machines have robots on each side that automatically assemble (repair broken ends). On a different track, they have another robot that automatically retires (removes complete packages) and starts a new package. The size and quality of each wire end is controlled by the Barco profile system to ensure uniformity. Characteristics of open ended wire: have low breaking strength. Higher elongation at break. Have better mass irregularity at short length. Lower IPI value High abrasion resistance High stiffness value Harder hand feeling In Ring Spinning, the spinning machines receive the Roving through a transit system from the roving machine. The yarn is made of cotton fibers which are twisted together after being stretched passing between three steel rollers and three rubber rollers. The twist is inserted into the wire using a traveler. The relationship between roller speeds, carriage speeds, and spindle speeds controls the degree of wire twist. End of production levels and production information are collected by the Uster Ring expert system. Spinning machines automatically remove full spools of yarn and send them to the package winding. Keep.