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Chapter: 11th 12th std standard Textiles And Dress Designing Cloth stitch Higher secondary school College practical steps methods Notes

Characteristics of Spun Yarns and Filament Yarns

Characteristics of Spun Yarns and Filament Yarns
Yarns can be made either from short staple length fibers or from filament fibers. There are two types of yarns, i.e., spun yarns and filamentous yarns.

Yarns can be made either from short staple length fibers or from filament fibers. There are two types of yarns, i.e., spun yarns and filamentous yarns.
Types of Yarns :
1.Spun Yarns
2.Filament Yarns
 
If filaments are used to make yarns they may be either multifilament or monofilament .
 
Filamentous Yarns
1.Monofilament
2.Multifilament -> Twisted,Flat
Mono filaments are filament yarns composed of one single filament.
Multi filaments are composed of many filaments.
 
Characteristics of Spun Yarns and Filament Yarns
 
Spun Yarn
 
1.     Yarns made from short length fibers and the fabrics are like cotton and wool.
 
2.     Short fibers twisted into continuous strand, has protruding ends
1.     Dull, fuzzy look
2.     Lint
3.     Subject to pilling
4.     Soil readily
5.     Warm (not slippery)
6.     Loft and bulk depend on size and twist
7.     Do not snag readily
8.     Stretch depends on amount of twist.
 
3.     Are absorbent
 
4.     Size often expressed in yarn number
 
5.     Various amount of twist used
 
6.     Most complex manufacturing process
 
Filament Yarn
 
1.     Yarns made from long length filament fibers and fabrics are like silk.
 
2.     Long continuous, smooth, closely

3.     packed strand.
1.                 Smooth, lustrous
2.                 Don not lint
3.                 Do not pill readily
4.                 Shed soil
5.                 Cool, slick
6.                 Little loft or bulk
7.                 Snagging depends on fabric construction
8.                 Stretch depends on amount of twist
 
4.     Absorbency depends on fiber content
 
5.     Size in denier
 
6.     Usually very low or very high twist
 
7.     Least complicated manufacturing process
a. Balanced Yarns:
Smooth fabrics are made from balanced yarns.
b. Unbalanced Yarns:
Crepe and textured surface may be created from unbalanced yarns.


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11th 12th std standard Textiles And Dress Designing Cloth stitch Higher secondary school College practical steps methods Notes : Characteristics of Spun Yarns and Filament Yarns |


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