Blending Flashcards
What are some reasons for fibre blending?
- Improved performance.
- Improved comfort.
- Easier aftercare.
- Improve appearance.
- Cost efficiency.
Why are polyester and cotton blended?
Polyester cancels out the shrinking, creasing, slow-drying properties of cotton.
Cotton improves the comfort and moisture absorption of polyester, making it less prone to static.
Why is elastane added to blends?
It adds stretch to a fabric, makes it fit the body more closely, and adds comfort as the wearer can move around more easily.
Why is viscose added to blends?
Viscose makes fabrics softer, more absorbent, and cheaper.
Why are wool and nylon blended?
Wool makes fabrics softer and warmer.
Nylon strengthens the fabric, prevents it shrinking, makes it more lightweight, and cheaper.
At what stages can blending be done?
- During yarn production by spinning yarns from different fibres.
- During fabric production by mixing yarns made from different fibres.
How can blending create a crimped effect?
A mixture of synthetic and natural fibres spun together can give a crimped effect.
During a hot finishing process some fibres in the yarn shrink, whilst others don’t. This creates a crimped effect.
How can blending cause cross dyeing?
Some fibres take up dye more easily than others.
When two or more different types of fibres are spun to form a yarn, the yarn does not take colour in an even way.
This produced interesting colour effects.
How can blending improve creasing?
Thermoplastic fibres can be heat set.
Wool-polyester mix trousers can acheive a sharper crease than pure wool, due to polyester’s heat setting properties.
