Yarn and its Construction
Telangana Open School (TOSS) · Class 12 · Community Science (Home Science)
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What is a yarn?
Answer
A yarn is a continuous strand of textile fibers or filaments twisted together, suitable for weaving or knitting into fabric. It is formed by spinning fibers to give strength and structure.
What is spinning in textile production?
Answer
Spinning is the process of twisting staple fibers together to form a continuous yarn. This gives strength and cohesion to the fibers, making them suitable for fabric construction.
How are synthetic fibers spun into yarn?
Answer
Synthetic fibers are spun chemically by forcing a melted polymer solution through a spinneret—a device with tiny pores like a showerhead. The filaments solidify as they cool and are collected as conti…
What is a spinneret?
Answer
A spinneret is a metal plate with many small holes, used in the production of synthetic fibers. The polymer solution is forced through these holes to form long, continuous filaments that harden into f…
What are the two main types of yarn based on fiber length?
Answer
The two main types are: 1) Staple yarns – made from short fibers twisted together, and 2) Filament yarns – made from long, continuous fibers.
What are staple yarns? Give an example.
Answer
Staple yarns are made by twisting short fibers (like cotton or wool) together. They have a fuzzy texture and are used in fabrics like denim or tweed for comfort and warmth.
What are filament yarns?
Answer
Filament yarns are made from long, continuous fibers (like silk or synthetic fibers). They are smooth, strong, and lustrous, often used in sarees and dresses for a shiny finish.
Differentiate between staple and filament yarns.
Answer
Staple yarns use short fibers, are fuzzy and absorbent, while filament yarns use long continuous fibers, are smooth and shiny. Staple yarns are warmer; filament yarns are stronger and less prone to pi…
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