Thread-up chains add ease of use to converting lines; however, they often interfere with edge detectors used for web guiding. As more converting processes switch to center justification of the material, avoiding thread-up chains has become even more complicated. Mechanical positioners have been used to pull detectors out of the thread-up path but this often creates other mechanical interference problems and increases the complexity of thread-up. AccuWeb’s out-of-the-box solution to the thread-up chain problem incorporates patented WideArray technology so the edge detector is stationary. To avoid the thread-up chain, AccuWeb has expanded the gap and throat of detectors.