Fibres And Fibre Blends Flashcards
Natural fibres have a longer production pipeline than manmade fibres.
True/false
A: True.
: What are fibres?
A: Fibres are the basic raw materials of textiles. They are hair-like structures that are spun into yarns and then woven or knitted to make fabrics.
List properties of fibres.
- Length: The length of a fibre affects the warmth of the fabric; shorter fibres trap more air and provide better insulation.
- Lustre: Describes the shininess or sheen of a fibre. Lustrous fibres have smooth surfaces that help prevent soiling.
- Moisture Absorption: Indicates how well a fibre absorbs water from the air, which helps prevent static electricity build-up in clothes.
- Tenacity: Measures the force needed to break the fibre. High tenacity fibres are strong and durable.
- Elasticity: Describes the ability of a fibre to return to its original length after stretching, which impacts the resilience and shape retention of the fabric.
Define blending.
A: Blending is the process of combining two or more types of fibres to produce a fabric that benefits from the best properties of each fibre.
Why do we combine synthetic fibres with natural fibres?
A: To improve the easy-care and durability of a fabric, reduce felting or matting, add lustre, and reduce costs.
Why do we blend fibres?
A: To enhance the overall quality and performance of the fabric
To increase strength
To improve aesthetics/appearance
To improve performance
To reduce cost
To improve durability
To improve comfort and softness
What is the primary reason for blending fibers in textiles?
A: To reduce production costs, improve performance, enhance aesthetics, and achieve certain finishes.
What is the density of polyester fiber?
A: 1.39 grams per cubic centimeter.
What is the density of cotton fiber?
A: 1.54 grams per cubic centimeter.
What are some advantages of polyester content in a blend?
A: High tensile strength.
What are some disadvantages of polyester content in a blend? .
A: Pilling and sometimes being uncomfortable
Why are natural fibers like cotton more expensive than polyester?
A: Natural fibers have a larger production pipeline and involve more intensive processing.
What is an example of a specialty fiber used for its aesthetic qualities?
A: Cashmere or Angora.
Why might a blend be used for certain finishes like cross-dyeing?
A: Chemically different fibers require different dyestuffs, which allows for unique finishes.
In a 50/50 polyester-cotton blend, which fiber is typically present in greater proportion by mass?
A: Polyester.
