Denim is a strong and durable cotton twill fabric, woven with colored warp and white batting threads. From a technical point of view, denim is a fabric with twill weave in the warp. In which a coarse and lower yarn count is used. So it's a heavy fabric. Denim is normally used to make jeans, overalls and other clothing. Traditionally it was dyed blue with indigo dye to make blue "jeans". Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get Original Essay Flow Chart of Denim Production: Raw Materials of Denim Fabrics: To produce good quality denim, the conditions should be optimal regarding the quality of all denim fabrics. raw materials and yarns used. For raw cotton and OE carded (rotor) or ring-spun yarns derived therefrom, the following criteria are as follows: denim is a cotton or a cotton-polyester blend or another combination of cotton with artificial fibers, a Heavy, durable twill weave and yarn-dyed fabric. Minimum staple length: 2.7 cm. Short fibers are in proportion (less than 12 mm long): less than 40%. The Micronaire value varies between 4.0 and 4.5. The strength and elongation values ​​of the luster apparatus for CV uniformity and imperfections must conform to at least 25% of the texture. Normally the range of denim warp yarn counts is between 50 and 90 tex and the weft yarns are between 75 and 75. 120 counts; Finer yarns up to 25 tex in twill or plain weave are often used in denim shirts. Twist factor from 4.5 to 5.0 for warp yarns, 4.2 for weft yarns. Less hairiness of the yarn. High strength and uniformity of the yarn.Production of denim:The term "Denim" originates from the city of Nimes in France, where the "serge de Nimes" was produced. Denim is dyed with a vat dye, indigo dye, which is applied to the cotton fabric in loose layers. As regards the denim manufacturing process, it is similar to that of the Gray fabric up to the weaving process with the only difference that in the case of the Denim Fabric the denim thread is dyed in the sizing phase while in the case of the Gray Fabric, the decision regarding the dyeing phase depends on the finished product. Open End spinning machines have robots on each side that automatically reattach (repair broken ends). On a different track, they have another robot that automatically takes off (removes full packages) and starts a new package. The size and quality of each wire end is monitored by the Barco Profile System to ensure consistency. Characteristics of open end yarn: they have a low breaking load. Higher elongation at break. Have better short-term mass irregularity. Lowest IPI value High abrasion resistance High stiffness value Harder hand feel In ring spinning, the spinning machines receive the roving via a transit system from the roving frame. The yarn is made up of cotton fibers twisted together after being stretched by passing between three steel rollers and three rubber rollers. The twist is inserted into the yarn with the help of the traveler. The relationship between roller speed, carriage speed, and spindle speed controls the amount of twist in the thread. Final levels and production information are collected by the Uster Ring Expert System. The spinning machines automatically pick up the full bobbins of thread and send them to the cone winding. Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay Characteristics of Ring Spinning: Ring spinning gets its name.