Breaker Card of Jute Carding Machine

Breaker Carding Machine
Breaker cards are generally down stricking and half-circular. In this machine the primary function of jute carding is done by the action of worker and cylinder and the cleaning 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.   
 
Breaker card
Main Parts of Breaker Card:
D = Delivery roller
Do = Doffer
W = Worker roller
S = Stripper roller
T = Tin cylinder
S = Shell
P = Pin roller
F = Feed roller

Principle of Breaker Card: 
It is a down striking and half circular carding machine. Its feed is at one side of the machine and delivery is on the opposite side.

Working Regions of Breaker Card:
  • Combing action occurs between stripper and worker roller.
  • Carding action occurs between cylinder and worker roller.
  • Opening spreading ocurrs between shell and pin feed roller.
Speed of Rollers:
Cylinder: 2400 – 2700 feet per minute
Feed roller: 9 – 14 feet per minutes
Worker: 35 – 50 feet per minutes
Stripper: 300 – 500 feet per minutes
Doffer: 75 – 95 feet per minutes
Delivery roller: 150 – 200 feet per minutes

Cause of Excessive Droppings in Jute Breaker Card
  • Hard and specky jute fibre.
  • Improper emulsion application
  • Improper speed ratio of different rollers
  • Faulty roller pins
  • More work load on pin
  • High or low moisture regain
  • If any roller is eccentric
Cause of Excessive Sliver Wastage in Jute Breaker Card 
  • More moisture regain 
  • Faulty roller setting 
  • Faulty pin 
  • Jam or lapping due to faulty drawing 
  • Faulty auto stop motion 
  • Frequent quality change 
  • Operation negligency

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