Quick Answer:
Short Answer
Edge guiding maintains web lateral position by sensing the edge and automatically steering the web back on course.
Edge guiding is a web handling technique that maintains the lateral position of a continuous web by sensing the edge position and automatically steering the web back on course. Edge guiding systems consist of three components: a sensor to detect the web edge, a controller to process the position data, and an actuator to physically move the web or guide mechanism. The web aligns according to the Normal Entry Rule—it naturally aligns perpendicular to the axis of rotation of the roller it approaches.