This problem necessitates a cotton sheet with the highest possible degree of uniformity as a feed to the combing machine. The feed material requires the best fibre arrangement (fibre parallel to the length of the feed material). If the fibre arrangement in the feed material is not proper, unnecessary loss of long-staple fibres occurs too. Therefore a fibre sheet having a high degree of uniformity with the best parallel arrangement of fibres is used as feedstock in the combing process.
A standard drawing process is used in this method of lap preparation. 20 – 24 number of carded slivers are fed together. After drafting a drawn sheet of sliver results.
Now, this drawn sheet is wound onto the lap roller. The linear density of the lap varies between 50 to 70 grams per metre.
Objectives of carding process
Objectives of mixing and blow room
Objectives of drawing ( draw frame process)
Cotton spinning process chart
Yarn count conversion from one to another system
Yarn count or yarn fineness ( Linear density of a yarn