1
Match the Texturizing methods of yarns given in List-I with their effects given in List-II ae or
Choose the correct answer from the options given below :
|
List - I
Texturizing Methods of Yarns
|
List - II
Structural Effects
|
||
|---|---|---|---|
| A | Knife edge texturizing Knife edge texturizing | I | Loops and curls Loops and curls |
| B | Stuffer box crimping Stuffer box crimping | II | Spiral coil like Spiral coil like |
| C | Air jet texturizing Air jet texturizing | III | Very pronounced loop structure Very pronounced loop structure |
| D | Knit de knit Knit de knit | IV | Saw tooth crimping Saw tooth crimping |
EXPLANATION
Fibre & Yarn Quality Testing
- Match Yarn Texturizing Processes with Structural Effects:
- Knife edge texturizing $\longrightarrow$ (II) Spiral coil like: Filament yarn is drawn across a heated sharp metal edge, inducing asymmetric differential shrinkage that produces helical spring-like coils.
- Stuffer box crimping $\longrightarrow$ (IV) Saw tooth crimping: Filaments are rammed rapidly into a heated confined chamber, folding yarns into sharp zigzag/sawtooth crimps.
- Air jet texturizing $\longrightarrow$ (I) Loops and curls: Cold supersonic turbulent air jet blows filaments apart, forming randomly entangled surface loops without heat setting.
- Knit-de-knit texturizing $\longrightarrow$ (III) Very pronounced loop / crinkle structure: Filament yarn is knitted into a tight fabric tube, heat-set, and unraveled to impart crinkle crimp.
- Conclusion: (A) - (II), (B) - (IV), (C) - (I), (D) - (III) (Option 3).
Correct option: (3) (A) - (II), (B) - (IV), (C) - (1), (D) ~ (ttl)
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