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Questions and Answers
What is the main purpose of the nipper movement with the batt in relation to the circular comb?
Which Primacomb has the highest total points according to the specifications provided?
How many needles per cm does the most frequently used top comb type generally have?
What effect does a thick sheet have on the retaining power of fibers during combing?
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What is influenced by the batt weight and degree of fibre parallelization?
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What is the maximum number of rows available in the Primacomb 5015?
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Which of the following numbers of needles per cm is NOT available in the market for top combs?
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During the process of combing, what percentage of fibers are typically pulled out in the self-cleaning effect?
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Study Notes
Nipper Movement
- The nipper with the batt moves concentrically to the circular comb to avoid unfavorable combing.
Comber Half Laps
- Primacomb 5015 has 5 sections, 28,475 total points and a diameter of 85mm
- Primacomb 4014 has 4 sections, 22,580 total points and a diameter of 80mm
- Primacomb 5014 has 4 sections, 22,580 total points and a diameter of 85mm
- Primacomb 5025 has 5 sections, 27,720 total points and a diameter of 85mm
- Primacomb 7015 has 4 sections, 25,070 total points and a diameter of 85mm
Top Comb
- The density of needles is defined as needles per centimeter
- Two types of top combs are commonly used: 26 needles/cm and 30 needles/cm
- Top combs available in the market are 23, 26, 28, 30, and 32 needles per centimeter
Operation of Combs
- The circular comb treats the forward portion and the top comb treats the trailing portion of the fiber fringe
- The top comb has a single row of needles
- The quality of combing for both portions is the same
- The self-cleaning effect of the circular comb removes less than 20% of the fibers in the nippers
- This low percentage of fibers is unable to take the impurities, which remain in the sheet
- The self-cleaning effect can be influenced by batt weight and the degree of fiber parallelization
- The self-cleaning effect is better for lower fiber parallelization and a more voluminous batt
- A thick sheet exerts a greater retaining power than a thin one
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Description
Explore the intricacies of combing and nipper movements in textile engineering. This quiz covers the specifications of various comb types, including needle density and structural features. Test your knowledge on how combs operate effectively within the textile process.
