Question:
Increase in Initial Nozzle pressure from $1.5~kg/cm^{2}$ to $2.5~kg/cm^{2}$ in Air Jet Spinning results in formation of which one of the following fibres?
Increase in Initial Nozzle pressure from $1.5~kg/cm^{2}$ to $2.5~kg/cm^{2}$ in Air Jet Spinning results in formation of which one of the following fibres?
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Higher nozzle pressure in air-jet spinning improves fibre wrapping and reduces core instability.
Updated On: Jun 29, 2026
- More number of Core-wild and less number of Wrapper-wild
- Less number of Core-wild and more number of Wrapper-wild
- More number of Core-wild and more number of Wrapper-wild
- Less number of Core-wild and less number of Wrapper-wild
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
In air-jet spinning, yarn formation depends on vortex airflow generated by nozzles. The air pressure controls fibre migration and wrapping behaviour. Higher nozzle pressure increases fibre wrapping efficiency and improves fibre control around the core.
Step 1: Understand nozzle pressure effect.
Higher pressure increases vortex strength. \[ \text{Higher pressure} \Rightarrow \text{Stronger fibre wrapping action} \]
Step 2: Analyze fibre structure formation.
• Core fibres become more stable
• More fibres get wrapped
• Wild fibres reduce in core region \[ \text{Result: More wrapper-wild, less core-wild} \]
Step 3: Match with options.
\[ \text{Less core-wild + More wrapper-wild} \]
Step 4: Final answer.
Thus, \[ \boxed{\text{Option (B) is correct.}} \]
Step 1: Understand nozzle pressure effect.
Higher pressure increases vortex strength. \[ \text{Higher pressure} \Rightarrow \text{Stronger fibre wrapping action} \]
Step 2: Analyze fibre structure formation.
• Core fibres become more stable
• More fibres get wrapped
• Wild fibres reduce in core region \[ \text{Result: More wrapper-wild, less core-wild} \]
Step 3: Match with options.
\[ \text{Less core-wild + More wrapper-wild} \]
Step 4: Final answer.
Thus, \[ \boxed{\text{Option (B) is correct.}} \]
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