Compact Spinning has firmly established itself as THE method of making superior ring yarn, with SUESSEN's EliTe® being the world's leading system.

The goal of compacting is to align the fibres in parallel and very close position to each other immediately prior to the twist insertion. This fibre arrangement will give compact yarn with all its characteristics. The elimination of the spinning triangle is merely a consequence of this arrangement.

Let me try to explain what is actually going on in the compacting zone.

All successful compacting systems are characterized by the following:

a.) Between exit of the normal 3-roller drafting system and a nipping line there is a compacting zone

b.) This zone consists of a suction tube with a slot inclined relative to the direction of the yarn path. Negative pressure is applied at this slot.

c.) A perforated transportation means (e.g. lattice apron, metal drum with holes) is used to move the fibres across this inclined slot.

There are two nearly independent physical effects which help to achieve the goal mentioned above:

1. The pneumatic effect

Fig. 1 shows the airflow as it has been calculated (using FEM methods)