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Leading Edge Detection of Polybags with Retro-Reflex Sensors with Light Band

In the food industry, filled packaging such as plastic bags, also called polybags, in various colors, shapes, surfaces and transparencies must be reliably detected for quality control on conveyor belts. A side-mounted retro-reflex sensor with light band detects objects of this type along the entire width from the leading edge. The length of the switching signal can also be used to determine the position of the polybags and thus adjust the speed of the system.

Retro-Reflex Sensors with Light Band

Retro-reflex sensors with light band detect objects with variable edges, shapes and sizes. Thanks to the continuous, homogeneous laser light band, the sensor monitors a much larger area than a light barrier with a dot-shaped light spot. The light band can also detect small or translucent parts.

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