Roll-2-Roll® sensors work on nearly all web materials, including many that defeat conventional sensors:
- Clear films — PET, BOPP, cellophane, and other transparent materials work without special settings
- Mesh and porous webs — accurately measured where conventional sensors fail
- Metals and foils — aluminum, copper, steel strip
- Textiles and nonwovens
- Glass and carbon fiber
The patented light-scattering and spatial-filtering technology detects edges and features regardless of material opacity or surface finish. No recalibration is needed when switching between materials.
One capability is unique to Roll-2-Roll® sensors: detecting clear film edges under vacuum. Ultrasonic sensors cannot function without air as a transmission medium, and camera-based systems struggle with transparent materials. Roll-2-Roll® sensors are the only sensing technology that reliably detects clear films in vacuum environments.
The one challenging material is matte carbon black — the solution is to angle the light source perpendicular to the web to increase light scattering at the edge.