Upgrading your web guiding system is one of the most effective ways to reduce scrap rates and boost throughput on converting lines. At the heart of any automatic guiding system is the edge sensor—the "eyes" of the machine. Ultrasonic sensors are widely preferred because they accurately detect clear films, non-wovens, paper, and metal foils. However, not all ultrasonic sensors are built equal. https://www.arisewebguiding.com/web-guide-sensor/a200-ultrasonic-edge-sensor