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|| Indigo Fiber Dyeing Techniques || History of Denim || Present Situation of Denim || Use of Indigo Fiber in Textile ||

WHAT ARE THE MODERN INDIGO FIBER DYING TECHNIQUES KNOWN TODAY?

After so many years, only three techniques have been developed.

Rope Dying System

360 non-dyed fibers that are to be dyed are twisted and brought to one rope form. They are bathed 6 or 8 times with a sensitive speed in dyestuff along the fibers. They are waited within each passage sensitively and subjected to oxidation so that they get the color. They are then dried sensitively by providing heat and air flow in homogeneous manner. Twist is opened and fibers are coiled one by one.

Slasher Dying Method

Each fiber to be dyed is wrapped on a wrapping cylinder or beam shaft one by one parallel to each other and then when these fibers are unwrapped from cylinder with the same speed and tension, they are passed through dyestuffs passages and various air passages 6 or 8 times, and at the same time they are transferred to another wrapping cylinder or beam shaft. However, it is not possible to stop during break off. The fiber number must withstand to the applied tension. Each speed drop results in non-recyclable loss for the establishment. Therefore, loss in these kinds of establishments is an important, inevitable part of the production that must be accepted. This process must continue at the same values along the fiber and air mixture at the same ratio for necessary constant oxidation must exist in the establishment.

Loop Dying Method

This is a method where dying is performed by knotting fibers one another back to back and passing them through 6 or 8 dying tank which carries thousands of tons of dyestuffs. The medium minimizes the performance of conditions necessary for volume and dying.

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