Measuring the Unwinding and Winding of Films on Rollers with High-Precision Laser Distance Sensor
Coated, high-gloss films are used to manufacture batteries. In order to detect their level on winding devices, high-precision laser distance sensors measure the exact distance – regardless of shape, color or surface. In this way, it is precisely determined on the unwinder how much material can still be unwound; on the rewinder, it is determined how much space there is available for material on the roller. The film is wound or unwound at a speed of up to 10 m/s for coating. The measured values are output via Ethernet interface and further processed.