Question

In Carding, Point to Point action occurs between

• A. Flat and Cylinder
• B. Cylinder and Doffer
• C. Licker in and Cylinder
• D. Licker in and Doffer

Hint:

Point-to-point action in carding occurs between two clothed rollers, mainly cylinder and doffer.

Answer 1

The Correct Option is B

Concept: In carding, fibre transfer occurs between different wire-covered surfaces. When both surfaces are clothed with metallic wires and directly transfer fibres from one to another, it is known as point-to-point action. This action ensures controlled fibre transfer without excessive fibre damage or loss.

Step 1: Understand point-to-point action.
Point-to-point action occurs when two clothed surfaces interact directly for fibre transfer. \[ \text{Point-to-point} \Rightarrow \text{Clothed surface to clothed surface} \]

Step 2: Identify possible interacting pairs.
In carding machine:
• Cylinder is clothed
• Doffer is clothed Both are designed for fibre transfer.

Step 3: Eliminate incorrect options.
Option (A): Flat and Cylinder
This is carding action, but not point-to-point transfer. Option (C): Licker-in and Cylinder
This is feed opening action, not point-to-point transfer. Option (D): Licker-in and Doffer
No direct interaction in normal carding operation.

Step 4: Final answer selection.
Thus, point-to-point action occurs between: \[ \boxed{\text{Cylinder and Doffer}} \] So, \[ \boxed{\text{Option (B) is correct.}} \]