Red Jeans For Men DefinitionSource(Google.com.pk)
True red jeans are made out of 100 percent cotton, including the threads. Polyester blends are available, however, the over-whelming majority of jeans sold are 100 percent cotton. The most common dye used is synthetic indigo. The belt loops, waistband, back panel, pockets, and leggings of a pair of blue jeans are all made of indigo-dyed denim. Other features of blue jeans include the zipper, buttons, rivets, and label. Rivets have been traditionally made of copper, but the zippers, snaps and buttons are usually steel. Designers' labels are often tags made out of cloth, leather, or plastic, while others are embroidered on with cotton thread.
Denim, unlike many types of cloth (which are woven in one place and sent to another for dying), is woven and dyed at one location.
There are several steps between ginned cotton (cotton after it has been picked from fields and processed) and cotton yarn. The incoming cotton is removed from tightly packed bales and inspected before undergoing a process known as carding. In this process, the cotton is put through machines that contain brushes with bent wire teeth. These brushes—called cards—clean, disentangle, straighten, and gather together the cotton fibers. At this point, the fibers are called slivers.
Other machines join several slivers together, and these slivers are then pulled and twisted, which serves to make the threads stronger. Next, these ropes are put on spinning machines that further twist and stretch the fibers to form yarn.Some cloths are woven (see step 5 below) and then dyed, but denim is usually dyed with chemically synthesized indigo before being woven. Large balls of yarn, called ball warps, are dipped in the indigo mixture several times so that the dye covers the yarn in layers. (These many layers of indigo dye explain why blue jeans fade slightly with each washing.) Although the exact chemicals used in such dyeing procedures remain trade secrets, it is known that a small amount of sulfur is often used to stabilize the top or bottom layers of indigo dye.
The dyed yarn is then slashed; that is, it is coated with sizing (any one of a variety of starchy substances) to make the threads stronger and stiffer. Once this operation is complete, the yarn threads are ready to woven with undyed filling yarn threads.
Weaving the yarn
The yarn is then woven on large mechanical looms. Denim is not 100 percent blue, as the blue dyed threads forming the warp(long, vertical threads) are combined with white threads forming the weft (shorter, horizontal threads). Because denim is woven with the blue threads packed closer together than the white threads and with the blue threads covering three out of four white threads, the blue threads dominate. (By examining a piece of denim closely one can detect the steep diagonal pattern that results from this process, which is known as a three-by-one right-hand twill weave.) Although mechanized looms make use of the same basic weaving procedure as a simple hand loom, they are much larger and faster. A modern "shuttle-less" loom (which uses a very small carrier instead of the traditional shuttle to weave the weft threads between the warp threads) may produce as much as 3,279 yards (3,000 meters) of cloth 3.28 or 4.37 yards (three or four meters) wide in a single week. As much as 1,093 yards (1,000 meters) of cloth may be rolled into a single huge bolt.
At this point the denim is ready for finishing, a term referring to a variety of treatments applied to cloth after it is woven. With denim, finishing is usually fairly simple. The cloth is brushed to remove loose threads and lint, and the denim is usually skewed in a way that will prevent it from twisting when it is made into clothing. The denim may then be sanforized, or preshrunk. Preshrunk denim should shrink no more than three percent after three washings.
In response to increased demand for jeans in the 1950's, American denim manufacturers replaced the old shuttle style looms with modern projectile looms. The new looms produced fabric faster and wider (60-inches or wider), yet lighter and less durable. Synthetic dyeing techniques along with post-dye treatments were introduced to control shrink and twist.