Carding is the process that transforms long jute reeds into a uniform ribbon, achieving objectives such as fiber breakdown, weight uniformity, and dirt removal. Carding machines can be classified by their cylinder functions, striking methods, and processing types, with key components that include rollers and flats. The breaker carding machine, primarily down striking and half-circular, serves to individualize fibers, draft them, and form a sliver.

1. The process by which long reeds of jute while
passing through high speed pinned rollers are
broken down into an entangled mass and
delivered into the form of ribbon of uniform
weight per unit length is called Carding.
Carding

2. Objects of Carding
To break down and split up the fibre.
To make the sliver of uniform wt per unit length.
To remove dirt and dust.
To individualize and parallelize the fibre.
To straighten the fibre drafting.
To reduce wt per unit length.
To mix different qualities of jute.

3. Classification of Carding
machine:
According to Cylinder function:
1.Half Circular
2.Full Circular

4. According to Striking:
1.Up Striking
2.Down Striking

5. According to processing
1.Mono carding machine.
2.Dual carding machine
3.Tandem carding machine.

6. According to Roller and Flat:
1.Stationary flat card:
In which the flats on the cylinder are fixed
and cylinder moves.
2.Revolving flat card:
In which the flats on the cylinder are moving
and cylinder moves.
3.Roller card:
Breaker card, Finisher card, not flat.

7. Breaker Carding Machine:
Breaker Cards are generally down striking and half-
circular. In this machine the primary function of
jute carding is done by the action f worker and
cylinder and the cleaning actions is done between
worker and stripper. It is called Breaker Card
because it breaks up to the long reeds of jute.
The main three functions of breaker Card are:
Individualization of fibre.
Drafting of fibre.
Sliver formation.

8. Main parts:
A main cylinder
Shell
Flutted feed Roller
Pin feed Roller
A pair of Stripper
A pair of worker
A pair of tin cylinder
Doffer
Drawing Roller
Delivery Roller

9. Working principle: