Present revolving flat card

A flat carding machine or a revolving flat carding machine is used in the spinning process to open the fibre tufts and flocks into individual fibres and to some extent parallelize the individualized fibres. It is known from the art and research studies that the fibres are carried over the cylinder over a number of revolutions before they being doffed from the cylinder and made into a sliver. Fibres carded and doffed in the present method has their ends or one of the ends hooked, which necessitates use of drawing machines to straighten these hooked fibres. It has been observed by many researches that the transfer coefficient of a revolving flat carding machine is around 0.1 and therefore there exists a delay time for a fibre to come out of the carding machine4. An operational layer is built on the cylinder surface. Load on the flats induced by carding action becomes almost stable and minimum after 15th – 20th flats5. That is the remaining working flats do not perform much carding action.