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Carding Action | Part 02 | Textile study center

Carding Action | Part 02

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Md. Omar Faruk
Student of National Institute of Textile Engineering and Research
Md. Omar Faruk
Md. Omar Faruk

Latest posts by Md. Omar Faruk (see all)

Part 01 | Carding Introduction  | |   Part 02 | Carding Action

Part 03 |Card Clothing | Types of card clothing  | | Part 04 | Auto Leveling in Carding

Part 05 | Measuring Devices in Carding  | | Part 06 | Characteristics of Card Sliver

Carding Action | Difference Among Carding Actions


Carding: Carding is a mechanical process that disentangles, cleans and intermix fibers s to produce a continuous web or sliver suitable for subsequent processing. In this process fibers are opened, parallelized & removes dust, impurities, short fibers to produce continuous strand of sliver. This is achieved by passing the fibers  between differentially moving surfaces covered with card clothing. The word is derived from the Latin “CARDUUS” meaning thistle or teasel, as dried vegetable teasels were first used to comb the raw wool.

Actions in carding machine:

I . Stripping action: when two close surfaces have same wire direction but their speed direction is opposite to each other, then the action between two surfaces is called stripping action. Opening and cleaning of fibers is done by this action.

  1. Action between taker in and cylinder
  2. Wire direction same
  3. Speed direction opposite
  4. Face to back arrangement of wires

II . Carding action: If two closed surfaces have opposite wire direction and their speed direction is also opposite to each other, then the action between two surfaces is known as carding action. Opening to individual fibers and neps removal is done by this action.

  1. Action between cylinder and flat
  2. Wire direction opposite
  3. Speed direction opposite
  4. Face to face arrangement of wires

 III . Doffing action: when two close surfaces have opposite wire direction and their speed direction is also opposite to each other, then the action between two surfaces is known as doffing action. Web formation of fibers is done by this action.

  1. Action between Cylinder and doffer
  2. Wire direction opposite
  3. Speed direction opposite
  4. Face to face arrangement

Difference among carding actions:

 

Stripping action

Carding action

Doffing action

Action occurs

Taker in & cylinder

Cylinder & flat

Cylinder & Doffer

Wire Direction

Same

Opposite

Opposite

Speed Direction

Opposite

Opposite

Opposite

Wire arrangement

Face to back

Face to face

Face to face

Function

Opening & cleaning of fibers

Opening into individual fiber & removing of neps

Web formation

Part 01 | Carding Introduction  | |   Part 02 | Carding Action

Part 03 |Card Clothing | Types of card clothing  | | Part 04 | Auto Leveling in Carding

Part 05 | Measuring Devices in Carding  | | Part 06 | Characteristics of Card Sliver


(82)

Md. Omar Faruk
Student of National Institute of Textile Engineering and Research
Md. Omar Faruk
Md. Omar Faruk

Latest posts by Md. Omar Faruk (see all)

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