A process of coloring fibers, yarns, or fabrics with either natural or synthetic dyes. Dyeing is an ancient art which predates written records. It was practiced during the Bronze Age in Europe. Primitive dyeing techniques included sticking plants to fabric or rubbing crushed pigments into cloth. The methods became more sophisticated with time and techniques using natural dyes from crushed fruits, berries and other plants, which were boiled into the fabric and gave light and water fastness (resistance), were developed. Dyeing can be done at any stage of the manufacturing of textile- fiber, yarn, fabric or a finished textile product including garments and apparels. The property of color fastness depends upon two factors- selection of proper dye according to the textile material to be dyed and selection of the method for dyeing the fiber, yarn or fabric
Various type of dyes are listed below:
Acid Dyes, Natural Dyes, Basic (Cationic) Dyes, Synthetic Dyes, Direct (substantive) Dyes, Disperse Dyes, Sulfur Dyes, Pigment Dyes, Mordant Dyes, Vat Dyes, Reactive Dyes, Macromolecular Dyes, Metallized Dyes, Naphthol Dyes, Premetallized Dyes, Gel Dyeing, Developed Dyes, Azo Dyes, Aniline Dyes, Anthraquinone Dyes
Question and Answer session:
Q: What is dyeing machine?
A: Dyeing is the process of adding color to textile products like fibers, yarns, and fabrics. Dyeing is normally done in a special solution containing dyes and particular chemical material. After dyeing, dye molecules have uncut chemical bond with fiber molecules.
Q: What is product dyeing?
A: Fiber dyeing is comparatively more costly than yarn, fabric, and product dyeing. The decision regarding the selection of colors has to be made early in the manufacturing process. Fiber dyeing is typically used to dye wool and other fibers that are used to produce yarns with two or more colors.
Q: How long does it take to dye clothes?
A: Add salt if dyeing cotton or linen, or white vinegar for wool or silk; amount will depend on size of dye bath. We used ¼ cup of either salt or vinegar for a bath of about 1 gallon, ½ cup for 2 gallons, and 1 cup for 3 or more gallons. (These additions help the fabric take the dye.)
Q: What is cross dyed fabric?
A: The production by either of two methods of multicolored effects on fabrics woven of more than one kind of fiber (as animal and vegetable fibers) having different affinities for dyes: a: the dyeing of a fabric by dyeing one or more kinds of fiber in the fabric with or without subsequent dyeing of the other fibers.
Q: What is jet dyeing machine?
A: Jet dye machine is the most modern machine used for dyeing of polyester using disperses dye. It is similar to winch dyeing and fabric is processed in continuous loop. The technique is especially useful for delicate polyester fabrics but depending on the machine almost any weight, structure, or fabric type can be used.
Q: What is garment dyed?
A: This means the t-shirt (or garment) is made then dyed. Although garment dyeing is the most extensive of the dyeing methods, it enables us to achieve a softer, broken-in feel and it takes out 99% of shrinkage to ensure consistent sizing.
Q: What is a pigment dye?
A: Pigment dyeing is a comparatively recent addition. In the process of pigment dyeing no actual chemical reaction takes place between the dye and the fabric. Instead, what happens is that the pigments get seated on the fabric with the help of binders. There is a challenge in pigment dyeing.
Q: What is an acid dye?
A: An acid dye is a dye which is a salt of a sulfuric, carboxylic or phenolic organic acid. The salts are often sodium or ammonium salts. Acid dyes are typically soluble in water and possess affinity for amphoteric fibers while lacking direct dyes’ affinity for cellulose fibers.