Carding : The heart of spinning

- Opening to individual fibers, this enables elimination of impurities and performance of other operations.

- Elimination of impurities occurs mainly in the region of the taker-in. The degree of cleaning achieved by modern card is very high, in the range of 90 -95%. Card sliver still contains 0.05 – 0.03% of foreign matter.

- Elimination of Dust, which are bound to the fibers. Significant fiber to fiber friction is needed in order to loosen such particles, this are available in carding operation.

  -Disentangling of neps, The number of neps increases from machine to machine in the blow-room, the card reduces the remaining number to a small fraction, they are mostly opened out.

- Elimination of short fibers, this may occur at flats. Long fibers have more contact with the clothing of the main cylinder than the short fibers. Thus longer fibers are continuously caught and carried along the main cylinder, where the short fibers stay caught in the flats clothing, press into it and leave the machine in the flat stripping.

- Fiber Blending, transverse blending occurs because the card is the only machine to process individual fibers. In formation the web, and with repeated rotation of the fibers on the main cylinder, intimate fiber with fiber mixing is achieved.

- Fiber orientation: The card is often attributed the effect of paralyzing.

- Sliver formation, for further processing. Generally the hank lies between 4 and 5.5 Ktex in the short staple spinning mill.

 

So from the above reason we can say,  “The Card is the heart of the Spinning Mill” and “Well Carded is half spun”