Dyes and Dyeing Flashcards
1
Q
Soluble substances which penetrate into the fabric and are fixed by a chemical action, heat or other treatment
A
Dyes
2
Q
Insoluble color particles which are held on the surface of a fabric by a binding agent
A
Pigments
3
Q
- Kind of dye
- Water-soluble compounds
- Great affinity for wool, silk/ nylon and casein
A
Acid Dyes
4
Q
- Kind of dye
- Oldest among the artificial dyes
- Direct affinity for silk, wool, nylon, casein fiber, jute and related fibers
- Brilliance, color and rapid coloring made them very popular
A
Basic Dyes
5
Q
- Classification of dye
- Will color both protein and cellulosic fibers
- Direct dyes for cotton, linen, viscose and cuprammonium rayon
- Achieve very bright full colors
- Used for reclaimed wool and for inferior grades of wool
- Not fast to washing
A
Direct or Salt Dyes
6
Q
- Kind of dye
- Formerly called ‘acetate dyes’
- Colorfastness of disperse dyes to light, laundering and dry cleaning is excellent
- Fume, fading said to be caused by exposure to nitrogen in the air, remains a problem when disperse dyes are used on nylon and polyester
A
Disperse Dyes
7
Q
- Kind of dye
- For cotton, linen and viscose rayon
- Makes the dye fast to washing
- These do not bleed, they are called tub-fast colors
- For women’s apparel that must withstand frequent washings
A
Developed Dyes
8
Q
- Kind of dye
- A diffuse into the fiber produces excellent penetration and leveling
- Can be done in two ways: padding and by thermosol process
- Wool and silk can be dyed in this fashion, but best result are on cotton
A
Reactive Dyes
9
Q
- Kind of dye
- Used for cotton and viscose rayon
- Injurious to protein fibers and can be used only on vegetable materials
- Wide range of dull colors and include a few blues, green, maroons and yellows
- Fast to washing and used for fabrics that req frequent washing
- No fastness to chlorine and only a fair degree of fastness to perspiration, acids, alkalis and light
A
Sulphur Dyes
10
Q
- Kind of dye
- Fastest dyes for cotton, linen and viscose and cuprammonium
- Considered most satisfactory of all dyes
- But too difficult to apply and too expensive to be practical for the dyeing trade
- Now in demand for furnishing and wash fabrics
A
Vat Dyes
11
Q
- Method of dyeing fabric
- Excellent colorfastness but does not leave the same flexibility for the final design
A
Solution Dye
12
Q
- Method of dyeing fabric
- Fibers are dyed before the yarns are spun and woven into a fabric
- In felts, fibers are dyed before they are felted
A
Fiber Dye (or Stock Dye
13
Q
- Method of dyeing fabric
- Yarns are dyed before they are woven
- Use of one colored yarn in the crosswise direction produces a changeable or iridescent effect
A
Yarn Dye
14
Q
- Method of dyeing fabric
- Cloth is dyed after fabrication
- A.k.a. Dip-Dyeing
A
Piece Dye
15
Q
- Type of Piece Dyeing / Dip Dyeing
- Open fabric passes back and forth through a stationary dye bath
A
Jig Dyeing
