Question

The number of fibres in the cross section of comber lap for best combing should be about

• A. 50,000
• B. 1,00,000
• C. 5,00,000
• D. 8,00,000

Hint:

The comber lap needs a substantial number of fibers for effective combing, but not an excessively large number. The range is approximately tens of thousands, not hundreds of thousands or millions.

Answer 1

The Correct Option is A

Step 1: Understanding Combing: Combing is a process in yarn manufacturing that removes short fibers (noils) and further parallelizes the remaining long fibers. This produces a smoother, finer, and stronger yarn. The comber lap is the sheet of fibers fed into the combing machine.
Step 2: Optimal Fiber Number: The number of fibers in the cross-section of the comber lap influences the combing efficiency. Too few fibers lead to insufficient cleaning, while too many fibers can overload the comber and cause fiber breakage. The ideal number is a balance between these two factors. While exact numbers can depend on fiber fineness and machine settings, a typical range for good combing is around 20,000 to 50,000 fibers. 50,000 is at the higher end, providing good combing.