20 Questions
What does it mean for a color to be considered 'permanent'?
It will not lose color in water
Which of the following best describes 'bleeding' in the context of fabrics?
Color loss and staining caused by the transfer of color in water
What is 'crock' in the context of fabric analysis?
Transfer of color due to abrasion or rubbing
Why are synthetic dyes used commercially instead of natural dyes?
They have better color fastness than natural dyes
What is the main difference between dyes and pigments?
Dyes chemically bond with the fiber, while pigments require a resin binder to adhere to fabric.
What is a disadvantage of stock dyeing or fibre dyeing?
Early color decisions have to be made, and it is relatively expensive.
What is the advantage of yarn dyeing?
Good dye penetration can be achieved in this process.
What is an advantage of using pigments instead of dyes?
They are cheaper and more efficient to apply than dyes.
What must be done to make the color from dyes permanent?
The colored fabric must undergo curing or heating.
What makes stock dyeing or fibre dyeing relatively expensive?
Early color decisions have to be made in production.
What is the main disadvantage of using stock dyeing or fibre dyeing?
Limited color decisions are made early in production
How are pigments different from dyes?
Pigments require a resin binder to adhere to fabric, while dyes do not
Why is yarn dyeing advantageous in the production process?
Provides an opportunity for special space dyeing techniques
What is a notable characteristic of pigments when compared to dyes?
Pigments do not affect the texture of the fabric
What is a key drawback of solution dyeing, particularly for manufactured fibers?
Inability to obtain a color match due to early color decision
Which term describes the shift of color that occurs when moisture lifts color and redeposits it in another area?
Migrate
What is the term for the loss of color due to atmospheric fumes, detergents, chlorine bleaches, dry cleaning chemicals, laundering, and sunlight?
Fade
What term is used to describe the transfer of color due to abrasion or rubbing?
Crock
Which type of dye was the only available option until the mid-1800s?
Natural dyes
What is the term for colourants that are chemicals producing color and are used to add color to textiles?
Dyes and pigments
Test your knowledge on the properties of dyes and dyeing processes in fabric analysis. Explore the expectations of customers regarding fashionable, permanent colors and the impact of bleeding on fabric colorfastness.
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