ANORDNUNG ZUR SEITENKANTENREGELUNG

A web travels along a predetermined path. A regulating system automatically keeps the position of the preselected first tolerance range. The system includes sensing, position-correcting and regulator units. The sensing unit senses the position of the lateral edge of the travelling web. The position-correcting unit effects corrective movements of the travelling web in a manner causing the lateral edge thereof to change positions. The regulator unit is connected to the sensing and position-correcting units and causes the latter to effect corrective movements of the travelling web at a first speed when the sensed position of the web edge is outside the first tolerance range and at a different second speed when the sensed position of the web edge is outside a preselected different second tolerance range.