shell: The normally hard, protective outer covering of something. It could cover a mollusk or crustacean (such as a mussel or crab), a bird’s egg or some other relatively soft tissue that needs protection (such as a tree nut or peanut). (in munitions) An explosive bullet, bomb, grenade or other projectile. Bleaching is the best way to get close to a white color as dyeing the material white after it has received the indigo dyes is almost impossible to do. Put bleach and water in a spray bottle and mix.

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If you have nothing to cover your work surface with, plan to work carefully. Have some bleach, rubbing alcohol, or acetone on hand to wipe off stains.Fill a stainless steel pot with 3 gallons 11.5 liters of hot water. There needs to be enough water for the jeans to move freely. Cover pot and heat water on stove top to just below boiling (or around 200°F 93°C). Fill a stainless steel pot with 3 gallons 11.5 liters of hot water. There needs to be enough water for the jeans to move freely. Cover pot and heat water on stove top to just below boiling at 200°F 93°C. Item can remain in dye bath from 10 minutes up to one hour. If dyeing a polyester cotton blend, keep the fabric in the dye bath for at least 30 minutes to ensure that the color takes fully.

dyeing? Denim FAQ answered by Denimhunters What is dyeing? Denim FAQ answered by Denimhunters

surface area: The area of some material’s surface. In general, smaller materials and ones with rougher or more convoluted surfaces have a greater exterior surface area — per unit mass — than larger items or ones with smoother exteriors. That becomes important when chemical, biological or physical processes occur on a surface. Indigo is also used as a food coloring, and is listed as FD&C Blue No. 2. The specification for FD&C Blue No. 2 includes three substances, of which the major one is the sodium salt of Indigotindisulfonate. More commonly today, synthetic indigo is used to dye clothing on an industrial scale due to its easier extraction and abundance of raw material. It’s easier to control high depth shades as you have less unevenness, which can cause shade variation. For industrial-scale indigo dyeing, yarns are bundled in ropes or spread out as sheets and run through several dyebaths in what’s known as ‘continuous dyeing ranges.’

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Before dyeing, remove any visible stains on the jeans. This will help achieve uniform color results when dyeing. Prewash them in warm, soapy water without any fabric softener. This helps to remove any finishes that may interfere with dye absorption. It’s called a resist dye technique because you can influence the final pattern a fabric dyed in indigo takes by pressing, stitching or folding off portions of the fabric so as to stop the indigo dye penetration certain sections of it. In this, it is similar to batik where you use wax to form sections or patterns on the fabric where the dye cannot penetrate. It’s through denim that I became acquainted with indigo—something that has become a hobby of mine in its own right. I think every denimhead dreams of making their own jeans and for me, this included making the fabric too. It is through this interest that I got acquainted with indigo as a dye, and fell in love with the Japanese technique of shibori. Looking for Quality Jeans and Other Well-Made Menswear?

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There are lots of locations where you can dye denim. That flexibility makes this process easier for you. Just make sure you cover anything you do not want to re-color with old materials or a canvas tarp, etc. The manufacturing process developed in the late 1800s is still in use throughout the world. In this process, indoxyl is synthesized by the fusion of sodium phenylglycinate in a mixture of sodium hydroxide and sodamide. technology: The application of scientific knowledge for practical purposes, especially in industry — or the devices, processes and systems that result from those efforts.You’ll want to leave it in a stable position in the dye for around 10 minutes. Step 7: Air Your Fabric Once you’ve dyed everything you want, remember to replace the lid on your dye bath to preserve it for further use later. Also, keep in mind that the end color is usually a mixture of the original denim color and the dye color. So using a red color dye on white denim is going to produce the best results. Dye Denim Brown