Spinning Basic Question Part - 02

16. What is 1 Hank?

Answer:  The length of 840 Yds yarn called 1 hank.

17. What do you mean by fiber fineness?

Answer: Fiber fineness indicates the diameter of the fiber or how the fiber is fine or coarse.

18. What is the micronaire value?

Answer: The weight of the fiber per inch is known as Micronaire value. It indicates the fineness or coarseness and the maturity of fiber. Higher micronaire value showing the coarser and mature fiber.

Micronaire value	Fineness
Up to 3.1	Very Fine
3.1 to 3.9	Fine
4.0 to 4.9	Medium
5.0 to 5.9	Slightly coarse
6.0 to above	Coarse

19. What is carding?

Answer: Carding is the reduction of an entangled mass of fiber to a filmy web by working them between two closely spaced relatively moving surface clothed with sharp wire point.

Yarn Spinning

20. What is bale management?

Answer: The Bale management is the testing, sorting, and mixing bales with the properties of fiber for producing specific quality yarn at minimum cost.

21. What is fiber elongation?

Answer:  Any increase in fiber length which can be expressed as a % (Percentage) of its original length.

22. Why carding is done in spinning?

Answer: Carding is the most important processing system for producing good quality yarn. Carding is done in spinning -

• To open up the cotton into single fiber state
• To reduce the number of Neps, short fibers, etc.
• To parallelized fiber 

23. What is TPI?

Answer: The meaning of TPI is Twist per inch or turns per inch.

24. What is IPI?

Answer: IPI= Imperfection index of yarns. It indicates yarns in thick or thin places and slubs.

25. Named some faults of yarn?

Answer: The most common faults of yarn are;

• Thick and thin places in the yarn
• Slubs
• Irregular yarn
• Nepped yarn
• Hairiness 
• Hard and non-elastic yarn
• Spinners double 

26. What is the meaning of AFIS?

Answer: AFIS = Advanced Fiber Information System.

27. What is the meaning of WIRA?

Answer: WIRA = Wool International Research Association.

28. What is Roving?

Answer: A roving is a long and narrow bundle of fiber which is the step right before the fiber is spun into yarn. 

29. What are the wastages of ring frame?

Answer: The ring frame wastages are 

• Banda
• Pnewmafil
• Hard waste
• Sweep

30. What is the moisture regain of Cotton fiber?

Answer: The moisture regain of Cotton fiber is 8.5%.

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