Denim

Denim, actually Serge de Nîmes (Fr. " fabric from Nîmes " ), is a very robust cotton fabric in twill weave, from the Levi Strauss the first classical jeans was made.

Kettköper traditionally used, in which only the warp yarn dyed with indigo, but the weft yarns are undyed for denim. Previously ring spun yarns were mainly used, which were, however, temporarily replaced due to the higher production rate of open-end yarns mostly until the ring-spun yarns in the 1990s because of their inherent structure a large share of the fashionable aspect of modern jeans were ( cross-hedge - optics ) and the open-end yarns completely repressed again. Before the weaving, the warp yarns are provided with a coloration, that is, the yarn is not only colored throughout from the surface. The filaments are dyed either in the strand ( Rope) or fanned out next to each other ( Slasher ). They happen several times the dye bath with the reduced soluble vat dye, only to be repeatedly brought to the air in contact with oxygen. Usually happens five to seven times. The more frequently takes place this process, the deeper is the blue color. The yarn is never completely colored, which is why you wash jeans as well and can brighten by friction ( Stone Wash).

After prolonged storage have denim articles often yellowish spots on that are brighter than the rest of the garment after washing. This is due to a decomposition reaction of the indigo to isatin by ozone, nitrogen oxides, or ultraviolet radiation.

Denim has a significantly higher UV protection than other materials because it is particularly dense woven and firm.

• Flachgewebe
• Cotton fabric