Apparatus on a flat card or roller card having a cylinder and at least one doffer

An apparatus on a flat card or roller card having a cylinder and at least one doffer, especially for processing cotton and/or synthetic fibres, in which the cylinder and the doffer each have an all-steel clothing having saw teeth, the clothing on the cylinder and the clothing on the doffer each having a point density per square inch (ppsi), wherein the clothing on the doffer has a point density of at least 400 ppsi, and the ratio between the point density (ppsi) of the clothing of the cylinder and the point density (ppsi) of the clothing of the doffer influences the proportion of the fibre mass that is transferred from the cylinder to the doffer per revolution of the cylinder in terms of a higher production rate or higher quality of the flat card or roller card.

A carding machine having a cylinder and at least one doffer, each having a clothing with a respective point density per square inch (ppsi), wherein the doffer point density is at least 400 ppsi and the ratio between the cylinder point density and the doffer point density is selected to influence the proportion of fibre mass that is transferred from the cylinder to the doffer or doffers per revolution of the cylinder.