Card clothing

摘要

A length of metallic card clothing wire is formed with non-uniform teeth, particularly so that the teeth at the ends of a cylinder are different from those in the middle e.g. to compensate for air currents and give more uniform carding. Adjacent pairs of teeth may have different pitches P or adjacent teeth may have different depths or base, front or back angles or may be of different types. A machine for producing the wire may have individual motors for feeding and punching and a control means to produce varying pitch. It may also have different cutters to produce teeth of different shapes.