INTRODUCTION
"Card is the heart of the spinning mill" and "Well carded is half spun" are two proverbs of the experts.
These proverbs inform the immense significance of carding in the spinning process.High production in carding to economise the process leads to reduction in yarn quality.Higher the production, the more sensitive becomes the carding operation and the greater danger of a negative influence on quality.The technological changes that has taken place in the process of carding is remarkable. Latest machines achieve the production rate of 60 - 100 kgs / hr, which used to be 5 - 10 kgs / hr, upto 1970.
THE PURPOSE OF CARDING:
to open the flocks into individual fibres
cleaning or elimination of impurities
reduction of neps
elimination of dust
elimination of short fibres
fibre blending
fibre orientation or alignment
sliver formation
TECHNOLOGICAL POINTS IN CARDING
There are two types of feeding to the cards
1. feeding material in the form of scutcher lap
2. flock feed system (flocks are transported pneumatically)
"Card is the heart of the spinning mill" and "Well carded is half spun" are two proverbs of the experts.
These proverbs inform the immense significance of carding in the spinning process.High production in carding to economise the process leads to reduction in yarn quality.Higher the production, the more sensitive becomes the carding operation and the greater danger of a negative influence on quality.The technological changes that has taken place in the process of carding is remarkable. Latest machines achieve the production rate of 60 - 100 kgs / hr, which used to be 5 - 10 kgs / hr, upto 1970.
THE PURPOSE OF CARDING:
to open the flocks into individual fibres
cleaning or elimination of impurities
reduction of neps
elimination of dust
elimination of short fibres
fibre blending
fibre orientation or alignment
sliver formation
TECHNOLOGICAL POINTS IN CARDING
There are two types of feeding to the cards
1. feeding material in the form of scutcher lap
2. flock feed system (flocks are transported pneumatically)