Sensing material edges for position feedback
Quick Answer:
Short Answer
No. Roll-2-Roll sensors require zero recalibration when switching between materials—switch from clear film to metallic foil instantly with no adjustment.
Unlike traditional sensors that require recalibration for each material type, Roll-2-Roll® Sensors use adaptive edge detection algorithms that automatically adjust to different material characteristics.
This eliminates:
- Manual gain adjustments
- Teach mode procedures
- Operator-dependent settings
- Extended changeover times
The impact: Plants using legacy sensors typically lose 2 hours monthly to recalibration—time that Roll-2-Roll Technologies technology completely eliminates.
Quick Answer:
Short Answer
Roll-2-Roll sensors detect edges on virtually any material including clear films, porous nonwovens, metallic foils, glass, mesh, and abrasive materials—without recalibration.
Roll-2-Roll® Sensors use patented fiber-optic technology based on light scattering rather than light blocking. This means they detect the physical presence of the web edge regardless of optical properties.
Materials that work:
- Clear and transparent films
- Porous nonwovens
- Metallic foils
- Glass
- Mesh and perforated materials
- Rubber and textiles
- Carbon fiber
- Abrasive materials
The only challenging material is matte carbon black that absorbs infrared light without reflection—and even this can be addressed by angling the light source.
Edge Detection
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Edge Detection and Position Measurement
Edge detection and position measurement is the foundation of automated web handling.
Quick Answer:
Short Answer
0.0635mm resolution with 500 Hz update rate.
WPS (Web Position Sensor) series sensors have a resolution of 0.0635mm with ±0.25mm linearity across the full sensing range. The update rate is 500 Hz, providing fast response for high-speed applications.