Presence Check of Nonwoven Fabric on Coffee Capsules with Reflex Sensors
In order for hot water in coffee machines to be pressed evenly through the coffee capsules and thus ensure a uniform taste, wafer-thin white nonwoven fabric must be inserted into the capsules. Once the coffee powder has been poured into the capsules and the nonwoven fabric has been placed on it, energy reflex sensors check the presence of the nonwoven fabric. Mounted above the conveyor belt, they reliably detect the difference between the darker coffee powder and the white nonwoven fabric – even at high belt speeds.
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