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Dope dyeing: In dope dyeing, pigments are added to the polymer solution itself before extruding the fibers. The process provides the dyed fibers with excellent fastness properties. The dope dyeing applies to synthetic fiber only. This method of dyeing is also known as solution dyeing [10] and 'mass coloration' or 'mass colored'. It has limited ...
Dyeing is normally done in a special solution containing dyes and particular chemical material. Dye molecules are fixed to the fiber by absorption, diffusion, or bonding with temperature and time being key controlling factors. The bond between dye molecule and fiber may be strong or weak, depending on the dye used.
A dyebath is a solution of dye and water or other liquid in which textiles are dyed. [20] dyed in the wool Dyed in the wool or dyed in the fleece refers to fibers that are dyed prior to spinning. Compare to dyed in the hank or yarn-dyed; piece-dyed (dyed after weaving); and garment-dyed, dyed after sewing or knitting. dyer's broom
Dyeing is one of the most polluting and pricey processes in the fashion industry — and Jeanologia, a Spain-based sustainable solution textile firm, seeks to minimize environmental impacts with ...
The beam dyeing process involves the movement of the dye solution, while the fabric remains stationary. [15] The dye liquor is created using a low specific liquor ratio ranging around 1:5. [16] The process requires a high temperature for the dye solution. The dye solution is heated to a maximum of 140 degrees Celsius. [17]
A dye is a colored substance that chemically bonds to the material to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they color. Dye is generally applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the fiber. [2]
A solvent dye is a dye soluble in organic solvents. It is usually used as a solution in an organic solvent. [1] Solvent dyes are used to color organic solvents, hydrocarbon fuels, waxes, lubricants, plastics, and other hydrocarbon-based nonpolar materials. Fuel dyes are one use of solvent dyes.
The fabric passes over rollers, immerses into a dye bath, and then proceeds through rollers that remove excess dye, allowing it to return to the dye container. [8] The difference between piece-dyeing in a vat and using a pad-dyeing machine is that in the latter, the fabric is continuously moved through one or more dye baths, rather than being ...