Forever in blue jeans..
• Blue denim jeans are worn and loved the world over by many people. Worn by Presidents, celebrities, farmers, housewives, college kids - they are comfortable, durable, cool and sexy.
• As described in the book 'Denim: from cowboys to catwalks - a visual history of the world's most legendary fabric'
by Graham Marsh and Paul Trynka, "Denim links dustbowl cowboys and high fashion models. It is both a symbol of the counterculture and the generator of huge amounts of money. It is a simple fabric, dating back to 18th-century France, which has become a symbol of street credibility and sex appeal
.The book describes the evolution of the denim business, from pioneering brands like Levi's, Lee and Wrangler to its use by high fashion houses such as Alexander McQueen, Vivienne Westwood, Ralph Lauren and Calvin Klein. http://goo.gl/UcyE0
·• Blue denim jeans
Ever wondered where the blue colour of blue jeans
comes from, and why denim cloth is different to other fabrics
The blue dye is Indigo
which is a natural dye extracted from the plant Indigofera tinctoria
, It is an organic compound with a distinctive blue colour, primarily used to dye cotton yarn which is used in the production of denim cloth.On average a pair of jeans needs 3 - 12 g of dye.The denim fabric is woven in a special way so that the blue is visible on the outside of the garment while the inside remains white.
• Obtaining the blue dye from the plant
The plant Indigofera tinctoria
contains 0-2 - 0-8% of a compound called 'indican'
which is the precursor to the blue dye indigo.
Indican is a colorless water soluble substance which readily hydrolyses to form 'indoxyl'
, which in turn gets oxidised to indigo
on exposure to air. Indican was obtained from the leaves of the plant by soaking them in water and fermenting to produce the blue dye. Different shades of blue and purple were produced from the precipitate of the fermented leaf solution.http://goo.gl/iAbPV
• Synthetic dye
The indigo dye used today, to produce denim cloth is synthetic. Indigo has been prepared by many methods, as far back as 1882 by the Baeyer-Drewson indigo synthesis. However, the first practical synthesis is due to Pfleger in 1901. In this process, N-phenylglycine is treated with a molten mixture of sodium hydroxide, potassium hydroxide, and sodamide. http://goo.gl/NT0a8
• How denim cloth is woven
Denim cloth is woven with two yarns - one dyed indigo, the other undyed. Indigo yarn is most visible on the outside, undyed yarn on the inside
It is described as a 'rugged cotton twill textile'
, in which the weft passes under two or more warp threads, called the 'twill'
weaving which produces the familiar diagonal ribbing of the fabric. http://goo.gl/gHXS4
It is characteristic of any indigo denim that only the warp threads are dyed, whereas the weft threads remain plain white. As a result, one side of the fabric shows the blue warp threads, the other side shows the white weft threads. This is what makes the fading characteristics of denim jeans so unique compared to other fabrics.
Blue denim jeans will live forever...
curated by +Allison Sekuler +Robby Bowles +Rajini Rao +Chad Haney +Buddhini Samarasinghe